diff --git a/partner_communication/README.rst b/partner_communication/README.rst
index ecac055bc..f380c24ba 100644
--- a/partner_communication/README.rst
+++ b/partner_communication/README.rst
@@ -7,7 +7,7 @@ Partner Communication
    !! This file is generated by oca-gen-addon-readme !!
    !! changes will be overwritten.                   !!
    !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-   !! source digest: sha256:4ab6ac3d709e050b5b05223900a63985bf3602dd9f6d83da92ff0df0feab456b
+   !! source digest: sha256:9b0868bd802a6d20510757fdbbdd52fb70a6bfc091936d41f147ac219a7a4afc
    !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
 .. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
@@ -32,6 +32,100 @@ efficient.
 .. contents::
    :local:
 
+Usage
+=====
+
+Tracking mailings sent outside of Odoo
+--------------------------------------
+
+Communications carry the UTM fields of Odoo (Source, Medium, Campaign)
+so that mailings sent outside of Odoo — through a printing house, for
+instance — can be analysed together with the digital ones. The source of
+a communication is its type, so only Medium and Campaign are shown and
+configured.
+
+A communication type is itself the UTM **source** of its communications.
+Its default **medium** and **campaign** are set under *Campaign
+Tracking* in the *General configuration* of its form, and can be refined
+per language or per user in its *Custom configuration*. A communication
+starts with the values of its type, and they can then be changed on the
+communication itself.
+
+A communication **created directly in the Done state** records a mailing
+that was already dispatched: Odoo generates nothing and sends nothing
+for it, and it is not merged into a pending communication. Its sending
+date is filled in automatically when it is not given. Such a
+communication keeps no content, since what was printed did not come from
+Odoo.
+
+Importing a recipient list
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+To record a mailing that has already been dispatched, import the
+recipient list sent to the printer from *Contacts → Partner
+Communication → Communication Jobs*, with the standard **Import
+records** button. Useful columns:
+
++-----------------+---------------------------------------------------+
+| Column          | Content                                           |
++=================+===================================================+
+| ``partner_id``  | Partner reference (the ``ref`` field), or the     |
+|                 | partner name                                      |
++-----------------+---------------------------------------------------+
+| ``config_id``   | Name of the communication type, see below for a   |
+|                 | new one                                           |
++-----------------+---------------------------------------------------+
+| ``state``       | ``Done`` for a mailing that was already           |
+|                 | dispatched                                        |
++-----------------+---------------------------------------------------+
+| ``send_mode``   | ``Print report`` for a letter (or the technical   |
+|                 | value ``physical``)                               |
++-----------------+---------------------------------------------------+
+| ``subject``     | Optional — a readable label, otherwise the lines  |
+|                 | show no subject                                   |
++-----------------+---------------------------------------------------+
+| ``medium_id``   | Optional — defaults to the medium of the          |
+|                 | communication type                                |
++-----------------+---------------------------------------------------+
+| ``campaign_id`` | Optional — defaults to the campaign of the        |
+|                 | communication type                                |
++-----------------+---------------------------------------------------+
+| ``sent_date``   | Optional — dispatch date, defaults to the date of |
+|                 | the import                                        |
++-----------------+---------------------------------------------------+
+
+An **empty cell is not the same as a missing column**: it sets the field
+to empty instead of falling back on the default of the communication
+type. To rely on the defaults, leave the column out of the file
+entirely.
+
+Prefer the partner **reference** over the name: a name is matched
+through ``name_search``, which silently picks the first record when
+several partners share it. Medium and campaign given by name must exist
+beforehand, and their names must be unique for the same reason.
+
+A mailing may deserve a **type of its own**, for instance a magazine
+issue. Give its name in the ``config_id`` column and set the *Create new
+values* option on that column in the import dialog: the type is created
+for partners, printed, and **archived right away**, so that a one-off
+mailing does not pile up in the types offered when creating a
+communication. It remains visible in the history and groupings of
+communications, and further imports with the same name reuse it.
+Reactivate it from the archived types if it turns out to be recurring.
+Without that option, a type that does not exist stops the import.
+
+Without the ``state`` column, the lines are imported as regular pending
+communications, ready to be sent by Odoo. As a safety net, an import
+never sends anything on its own, whatever the state — importing a
+recipient list is meant to record mailings, and a communication type set
+to send automatically would otherwise dispatch the whole file. For the
+same reason an imported line is never merged into an existing
+communication, which may already be waiting to be sent: every line keeps
+its own record.
+
+Once imported, the communication list groups by Campaign and Medium, on
+top of the existing grouping by communication type.
+
 Bug Tracker
 ===========
 
diff --git a/partner_communication/__manifest__.py b/partner_communication/__manifest__.py
index 44b156191..1749105d3 100644
--- a/partner_communication/__manifest__.py
+++ b/partner_communication/__manifest__.py
@@ -30,7 +30,7 @@
 # pylint: disable=C8101
 {
     "name": "Partner Communication",
-    "version": "18.0.1.0.2",
+    "version": "18.0.1.0.3",
     "category": "Other",
     "author": "Compassion Switzerland",
     "license": "AGPL-3",
diff --git a/partner_communication/models/communication_config.py b/partner_communication/models/communication_config.py
index 2e5a05e58..14f68feb8 100644
--- a/partner_communication/models/communication_config.py
+++ b/partner_communication/models/communication_config.py
@@ -17,9 +17,15 @@
 
 class CommunicationDefaults(models.AbstractModel):
     """Abstract class to share config settings between communication config
-    and communication job."""
+    and communication job.
+
+    It carries the UTM fields (source_id, medium_id, campaign_id) of utm.mixin: a
+    communication starts with the values of its type, or of the default config that
+    applies, and they can then be changed on the communication itself.
+    """
 
     _name = "partner.communication.defaults"
+    _inherit = "utm.mixin"
     _description = "Communication Defaults"
 
     user_id = fields.Many2one("res.users", "From", domain=[("share", "=", False)])
@@ -90,11 +96,14 @@ class CommunicationConfig(models.Model):
     ##########################################################################
     #                                 FIELDS                                 #
     ##########################################################################
+    # Also the source_id of utm.mixin: the communication type is itself the UTM
+    # source of its communications.
     source_id = fields.Many2one(
         "utm.source",
         "UTM Source",
         required=True,
         ondelete="restrict",
+        help="The communications of this type are tracked with this source.",
     )
     model_id = fields.Many2one(
         "ir.model",
@@ -200,6 +209,45 @@ def _validate_attachment_function(self):
     ##########################################################################
     #                             PUBLIC METHODS                             #
     ##########################################################################
+    @api.model
+    def name_create(self, name):
+        """Create a communication type from its name alone.
+
+        This is what the import of communications calls when the file names a type
+        that does not exist yet and the "Create new values" option is set on the
+        column. Such a type only records a mailing dispatched outside of Odoo: it
+        applies to partners and is printed. The default implementation cannot be
+        used, since the display name of a type is its UTM source.
+
+        During an import, the type is created archived: a one-off mailing must not
+        pile up in the list of types offered when creating a communication. It stays
+        usable for the following lines and imports of the same name, which find it
+        here, and in the history and groupings of communications.
+        """
+        name = (name or "").strip()
+        config = self.with_context(active_test=False).search(
+            [("name", "=", name)], limit=1
+        )
+        if config:
+            return config.id, config.display_name
+
+        # A UTM source of that name may already exist without a type. Reuse it:
+        # creating a source with the same name would number it "name [2]".
+        source = self.env["utm.source"].search([("name", "=", name)], limit=1)
+        vals = {"source_id": source.id} if source else {"name": name}
+        vals.update(
+            {
+                "model_id": self.env.ref("base.model_res_partner").id,
+                "send_mode": "physical",
+                "report_id": self.env.ref(
+                    "partner_communication.report_a4_communication"
+                ).id,
+                "active": not self.env.context.get("import_file"),
+            }
+        )
+        config = self.create(vals)
+        return config.id, config.display_name
+
     def write(self, vals):
         """
         Override write to handle email_template_id changes efficiently and
@@ -291,10 +339,15 @@ def build_inform_mode(
         """
         send_priority = self._get_send_priority(partner, print_if_not_email)
         if communication_send_mode != "partner_preference":
-            partner_mode = getattr(
-                partner,
-                send_mode_pref_field or "global_communication_delivery_preference",
-                partner.global_communication_delivery_preference,
+            partner_mode = (
+                getattr(
+                    partner,
+                    send_mode_pref_field or "global_communication_delivery_preference",
+                    partner.global_communication_delivery_preference,
+                )
+                # An empty partner recordset (in the creation form, the config has a
+                # default value but no partner is selected yet) has no preference.
+                or "none"
             )
             auto_mode = self._get_auto_mode(partner_mode, communication_send_mode)
             if communication_send_mode == partner_mode:
diff --git a/partner_communication/models/communication_job.py b/partner_communication/models/communication_job.py
index 8b588ac5f..693aa8c75 100644
--- a/partner_communication/models/communication_job.py
+++ b/partner_communication/models/communication_job.py
@@ -345,36 +345,21 @@ def create(self, vals_list):
         """If a pending communication for same partner exists,
         add the object_ids to it. Otherwise, create a new communication.
         opt-out partners won't create any communication.
+
+        A communication created as done only records a mailing that was already
+        dispatched, outside of Odoo for instance: it is never merged, and nothing is
+        generated nor sent for it.
         """
         updated = self.browse()
+        # A CSV import (`import_file` is set by base_import) never sends anything, even
+        # for pending communications: importing a recipient list is meant to record
+        # mailings, and a communication type set to send automatically would otherwise
+        # dispatch the whole file. It never merges either, so that it cannot touch a
+        # communication that already has a send task queued.
+        no_send = bool(self.env.context.get("import_file"))
         for vals in vals_list.copy():
-            # Object ids accept lists, integer or string values. It should contain
-            # a comma separated list of integers
-            object_ids = vals.get("object_ids")
-            if isinstance(object_ids, list):
-                vals["object_ids"] = ",".join(map(str, object_ids))
-            elif object_ids:
-                vals["object_ids"] = str(object_ids)
-            else:
-                vals["object_ids"] = str(vals["partner_id"])
-
-            same_job_search = [
-                ("partner_id", "=", vals.get("partner_id")),
-                ("config_id", "=", vals.get("config_id")),
-                (
-                    "config_id",
-                    "!=",
-                    self.env.ref("partner_communication.default_communication").id,
-                ),
-                ("state", "in", ["pending", "failure"]),
-            ] + self.env.context.get("same_job_search", [])
-            job = self.search(same_job_search, limit=1)
-
-            if job and not job.config_id.forbid_merging:
-                job.object_ids = job.object_ids + "," + vals["object_ids"]
-                job.refresh_text()
-                if job.auto_send:
-                    job.send()
+            job = self._prepare_create_vals(vals, no_send=no_send)
+            if job:
                 updated += job
                 vals_list.remove(vals)
 
@@ -401,6 +386,11 @@ def create(self, vals_list):
             ):
                 job.auto_send = send_mode[1]
 
+            if job.state == "done":
+                # The communication is only recorded for tracking purposes: skip
+                # attachments and PDF rendering, and never call nor send anything.
+                continue
+
             job.set_attachments()
             if job.send_mode in ("both", "physical"):
                 job.count_pdf_page()
@@ -427,6 +417,73 @@ def create(self, vals_list):
 
         return updated + created
 
+    def _prepare_create_vals(self, vals, no_send=False):
+        """Normalise the values of a communication about to be created, and merge them
+        into an existing pending communication when possible.
+        :param vals: dict: record values, updated in place
+        :param no_send: nothing may be sent because of this creation, so never merge:
+                        an existing communication may already have a send task queued,
+                        which would then deliver these values along with it.
+        :return: the job the values were merged into, empty recordset if none.
+        """
+        # Object ids accept lists, integer or string values. It should contain
+        # a comma separated list of integers
+        object_ids = vals.get("object_ids")
+        if isinstance(object_ids, list):
+            vals["object_ids"] = ",".join(map(str, object_ids))
+        elif object_ids:
+            vals["object_ids"] = str(object_ids)
+        else:
+            vals["object_ids"] = str(vals["partner_id"])
+
+        if no_send:
+            vals["auto_send"] = False
+
+        if "state" in vals and not vals["state"]:
+            # An empty cell in a CSV sets the field to False instead of leaving it out:
+            # fall back on the default state rather than create a stateless job.
+            del vals["state"]
+
+        if vals.get("state") == "done":
+            # The communication only records a mailing that was already dispatched,
+            # outside of Odoo for instance: it is never merged, and nothing may be
+            # generated nor sent for it.
+            if not vals.get("sent_date"):
+                vals["sent_date"] = fields.Datetime.now()
+            vals["auto_send"] = False
+            return self.browse()
+
+        if no_send:
+            return self.browse()
+
+        return self._merge_into_pending_job(vals)
+
+    def _merge_into_pending_job(self, vals):
+        """Look for a pending communication of the same partner and type in which the
+        values being created can be merged, and merge them into it.
+        :param vals: dict: record values
+        :return: the job the values were merged into, empty recordset if none was found.
+        """
+        same_job_search = [
+            ("partner_id", "=", vals.get("partner_id")),
+            ("config_id", "=", vals.get("config_id")),
+            (
+                "config_id",
+                "!=",
+                self.env.ref("partner_communication.default_communication").id,
+            ),
+            ("state", "in", ["pending", "failure"]),
+        ] + self.env.context.get("same_job_search", [])
+        job = self.search(same_job_search, limit=1)
+        if not job or job.config_id.forbid_merging:
+            return self.browse()
+
+        job.object_ids = job.object_ids + "," + vals["object_ids"]
+        job.refresh_text()
+        if job.auto_send:
+            job.send()
+        return job
+
     @api.model
     def _get_dynamic_user(self, config, object_ids_str):
         """
@@ -486,6 +543,9 @@ def _get_default_vals(self, vals, default_vals=None):
                 "report_id",
                 "need_call",
                 "print_if_not_email",
+                "source_id",
+                "medium_id",
+                "campaign_id",
             ]
         )
 
diff --git a/partner_communication/readme/USAGE.md b/partner_communication/readme/USAGE.md
new file mode 100644
index 000000000..e3088054a
--- /dev/null
+++ b/partner_communication/readme/USAGE.md
@@ -0,0 +1,60 @@
+## Tracking mailings sent outside of Odoo
+
+Communications carry the UTM fields of Odoo (Source, Medium, Campaign) so that mailings
+sent outside of Odoo — through a printing house, for instance — can be analysed together
+with the digital ones. The source of a communication is its type, so only Medium and
+Campaign are shown and configured.
+
+A communication type is itself the UTM **source** of its communications. Its default
+**medium** and **campaign** are set under *Campaign Tracking* in the *General configuration*
+of its form, and can be refined per language or per user in its *Custom configuration*. A
+communication starts with the values of its type, and they can then be changed on the
+communication itself.
+
+A communication **created directly in the Done state** records a mailing that was already
+dispatched: Odoo generates nothing and sends nothing for it, and it is not merged into a
+pending communication. Its sending date is filled in automatically when it is not given.
+Such a communication keeps no content, since what was printed did not come from Odoo.
+
+### Importing a recipient list
+
+To record a mailing that has already been dispatched, import the recipient list sent to the
+printer from *Contacts → Partner Communication → Communication Jobs*, with the standard
+**Import records** button. Useful columns:
+
+| Column        | Content                                                            |
+| ------------- | ------------------------------------------------------------------ |
+| `partner_id`  | Partner reference (the `ref` field), or the partner name           |
+| `config_id`   | Name of the communication type, see below for a new one            |
+| `state`       | `Done` for a mailing that was already dispatched                   |
+| `send_mode`   | `Print report` for a letter (or the technical value `physical`)    |
+| `subject`     | Optional — a readable label, otherwise the lines show no subject   |
+| `medium_id`   | Optional — defaults to the medium of the communication type        |
+| `campaign_id` | Optional — defaults to the campaign of the communication type      |
+| `sent_date`   | Optional — dispatch date, defaults to the date of the import       |
+
+An **empty cell is not the same as a missing column**: it sets the field to empty instead
+of falling back on the default of the communication type. To rely on the defaults, leave
+the column out of the file entirely.
+
+Prefer the partner **reference** over the name: a name is matched through `name_search`,
+which silently picks the first record when several partners share it. Medium and campaign
+given by name must exist beforehand, and their names must be unique for the same reason.
+
+A mailing may deserve a **type of its own**, for instance a magazine issue. Give its name in
+the `config_id` column and set the *Create new values* option on that column in the import
+dialog: the type is created for partners, printed, and **archived right away**, so that a
+one-off mailing does not pile up in the types offered when creating a communication. It
+remains visible in the history and groupings of communications, and further imports with
+the same name reuse it. Reactivate it from the archived types if it turns out to be
+recurring. Without that option, a type that does not exist stops the import.
+
+Without the `state` column, the lines are imported as regular pending communications, ready
+to be sent by Odoo. As a safety net, an import never sends anything on its own, whatever
+the state — importing a recipient list is meant to record mailings, and a communication type
+set to send automatically would otherwise dispatch the whole file. For the same reason an
+imported line is never merged into an existing communication, which may already be waiting
+to be sent: every line keeps its own record.
+
+Once imported, the communication list groups by Campaign and Medium, on top of the
+existing grouping by communication type.
diff --git a/partner_communication/static/description/index.html b/partner_communication/static/description/index.html
index 38bcc5aea..0df5d720d 100644
--- a/partner_communication/static/description/index.html
+++ b/partner_communication/static/description/index.html
@@ -2,19 +2,18 @@
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-<meta name="generator" content="Docutils: https://docutils.sourceforge.io/" />
+<meta name="generator" content="Docutils: http://docutils.sourceforge.net/" />
 <title>Partner Communication</title>
 <style type="text/css">
 
 /*
 :Author: David Goodger (goodger@python.org)
-:Id: $Id: html4css1.css 9511 2024-01-13 09:50:07Z milde $
+:Id: $Id: html4css1.css 7952 2016-07-26 18:15:59Z milde $
 :Copyright: This stylesheet has been placed in the public domain.
 
 Default cascading style sheet for the HTML output of Docutils.
-Despite the name, some widely supported CSS2 features are used.
 
-See https://docutils.sourceforge.io/docs/howto/html-stylesheets.html for how to
+See http://docutils.sf.net/docs/howto/html-stylesheets.html for how to
 customize this style sheet.
 */
 
@@ -275,7 +274,7 @@
   margin-left: 2em ;
   margin-right: 2em }
 
-pre.code .ln { color: gray; } /* line numbers */
+pre.code .ln { color: grey; } /* line numbers */
 pre.code, code { background-color: #eeeeee }
 pre.code .comment, code .comment { color: #5C6576 }
 pre.code .keyword, code .keyword { color: #3B0D06; font-weight: bold }
@@ -301,7 +300,7 @@
 span.pre {
   white-space: pre }
 
-span.problematic, pre.problematic {
+span.problematic {
   color: red }
 
 span.section-subtitle {
@@ -367,7 +366,7 @@ <h1 class="title">Partner Communication</h1>
 !! This file is generated by oca-gen-addon-readme !!
 !! changes will be overwritten.                   !!
 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-!! source digest: sha256:4ab6ac3d709e050b5b05223900a63985bf3602dd9f6d83da92ff0df0feab456b
+!! source digest: sha256:9b0868bd802a6d20510757fdbbdd52fb70a6bfc091936d41f147ac219a7a4afc
 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
 <p><a class="reference external image-reference" href="https://odoo-community.org/page/development-status"><img alt="Beta" src="https://img.shields.io/badge/maturity-Beta-yellow.png" /></a> <a class="reference external image-reference" href="http://www.gnu.org/licenses/agpl-3.0-standalone.html"><img alt="License: AGPL-3" src="https://img.shields.io/badge/licence-AGPL--3-blue.png" /></a> <a class="reference external image-reference" href="https://github.com/CompassionCH/compassion-modules/tree/18.0/partner_communication"><img alt="CompassionCH/compassion-modules" src="https://img.shields.io/badge/github-CompassionCH%2Fcompassion--modules-lightgray.png?logo=github" /></a></p>
 <p>The Partner Communication module is designed to facilitate the sending
@@ -377,16 +376,125 @@ <h1 class="title">Partner Communication</h1>
 <p><strong>Table of contents</strong></p>
 <div class="contents local topic" id="contents">
 <ul class="simple">
-<li><a class="reference internal" href="#bug-tracker" id="toc-entry-1">Bug Tracker</a></li>
-<li><a class="reference internal" href="#credits" id="toc-entry-2">Credits</a><ul>
-<li><a class="reference internal" href="#authors" id="toc-entry-3">Authors</a></li>
-<li><a class="reference internal" href="#maintainers" id="toc-entry-4">Maintainers</a></li>
+<li><a class="reference internal" href="#usage" id="id1">Usage</a><ul>
+<li><a class="reference internal" href="#tracking-mailings-sent-outside-of-odoo" id="id2">Tracking mailings sent outside of Odoo</a><ul>
+<li><a class="reference internal" href="#importing-a-recipient-list" id="id3">Importing a recipient list</a></li>
 </ul>
 </li>
 </ul>
+</li>
+<li><a class="reference internal" href="#bug-tracker" id="id4">Bug Tracker</a></li>
+<li><a class="reference internal" href="#credits" id="id5">Credits</a><ul>
+<li><a class="reference internal" href="#authors" id="id6">Authors</a></li>
+<li><a class="reference internal" href="#maintainers" id="id7">Maintainers</a></li>
+</ul>
+</li>
+</ul>
+</div>
+<div class="section" id="usage">
+<h1><a class="toc-backref" href="#id1">Usage</a></h1>
+<div class="section" id="tracking-mailings-sent-outside-of-odoo">
+<h2><a class="toc-backref" href="#id2">Tracking mailings sent outside of Odoo</a></h2>
+<p>Communications carry the UTM fields of Odoo (Source, Medium, Campaign)
+so that mailings sent outside of Odoo — through a printing house, for
+instance — can be analysed together with the digital ones. The source of
+a communication is its type, so only Medium and Campaign are shown and
+configured.</p>
+<p>A communication type is itself the UTM <strong>source</strong> of its communications.
+Its default <strong>medium</strong> and <strong>campaign</strong> are set under <em>Campaign
+Tracking</em> in the <em>General configuration</em> of its form, and can be refined
+per language or per user in its <em>Custom configuration</em>. A communication
+starts with the values of its type, and they can then be changed on the
+communication itself.</p>
+<p>A communication <strong>created directly in the Done state</strong> records a mailing
+that was already dispatched: Odoo generates nothing and sends nothing
+for it, and it is not merged into a pending communication. Its sending
+date is filled in automatically when it is not given. Such a
+communication keeps no content, since what was printed did not come from
+Odoo.</p>
+<div class="section" id="importing-a-recipient-list">
+<h3><a class="toc-backref" href="#id3">Importing a recipient list</a></h3>
+<p>To record a mailing that has already been dispatched, import the
+recipient list sent to the printer from <em>Contacts → Partner
+Communication → Communication Jobs</em>, with the standard <strong>Import
+records</strong> button. Useful columns:</p>
+<table border="1" class="docutils">
+<colgroup>
+<col width="25%" />
+<col width="75%" />
+</colgroup>
+<thead valign="bottom">
+<tr><th class="head">Column</th>
+<th class="head">Content</th>
+</tr>
+</thead>
+<tbody valign="top">
+<tr><td><tt class="docutils literal">partner_id</tt></td>
+<td>Partner reference (the <tt class="docutils literal">ref</tt> field), or the
+partner name</td>
+</tr>
+<tr><td><tt class="docutils literal">config_id</tt></td>
+<td>Name of the communication type, see below for a
+new one</td>
+</tr>
+<tr><td><tt class="docutils literal">state</tt></td>
+<td><tt class="docutils literal">Done</tt> for a mailing that was already
+dispatched</td>
+</tr>
+<tr><td><tt class="docutils literal">send_mode</tt></td>
+<td><tt class="docutils literal">Print report</tt> for a letter (or the technical
+value <tt class="docutils literal">physical</tt>)</td>
+</tr>
+<tr><td><tt class="docutils literal">subject</tt></td>
+<td>Optional — a readable label, otherwise the lines
+show no subject</td>
+</tr>
+<tr><td><tt class="docutils literal">medium_id</tt></td>
+<td>Optional — defaults to the medium of the
+communication type</td>
+</tr>
+<tr><td><tt class="docutils literal">campaign_id</tt></td>
+<td>Optional — defaults to the campaign of the
+communication type</td>
+</tr>
+<tr><td><tt class="docutils literal">sent_date</tt></td>
+<td>Optional — dispatch date, defaults to the date of
+the import</td>
+</tr>
+</tbody>
+</table>
+<p>An <strong>empty cell is not the same as a missing column</strong>: it sets the field
+to empty instead of falling back on the default of the communication
+type. To rely on the defaults, leave the column out of the file
+entirely.</p>
+<p>Prefer the partner <strong>reference</strong> over the name: a name is matched
+through <tt class="docutils literal">name_search</tt>, which silently picks the first record when
+several partners share it. Medium and campaign given by name must exist
+beforehand, and their names must be unique for the same reason.</p>
+<p>A mailing may deserve a <strong>type of its own</strong>, for instance a magazine
+issue. Give its name in the <tt class="docutils literal">config_id</tt> column and set the <em>Create new
+values</em> option on that column in the import dialog: the type is created
+for partners, printed, and <strong>archived right away</strong>, so that a one-off
+mailing does not pile up in the types offered when creating a
+communication. It remains visible in the history and groupings of
+communications, and further imports with the same name reuse it.
+Reactivate it from the archived types if it turns out to be recurring.
+Without that option, a type that does not exist stops the import.</p>
+<p>Without the <tt class="docutils literal">state</tt> column, the lines are imported as regular pending
+communications, ready to be sent by Odoo. As a safety net, an import
+never sends anything on its own, whatever the state — importing a
+recipient list is meant to record mailings, and a communication type set
+to send automatically would otherwise dispatch the whole file. For the
+same reason an imported line is never merged into an existing
+communication, which may already be waiting to be sent: every line keeps
+its own record.</p>
+<p>Once imported, the communication list groups by Campaign and Medium, on
+top of the existing grouping by communication type.</p>
+</div>
+</div>
 </div>
 <div class="section" id="bug-tracker">
-<h1><a class="toc-backref" href="#toc-entry-1">Bug Tracker</a></h1>
+<h1><a class="toc-backref" href="#id4">Bug Tracker</a></h1>
 <p>Bugs are tracked on <a class="reference external" href="https://github.com/CompassionCH/compassion-modules/issues">GitHub Issues</a>.
 In case of trouble, please check there if your issue has already been reported.
 If you spotted it first, help us to smash it by providing a detailed and welcomed
@@ -394,15 +502,15 @@ <h1><a class="toc-backref" href="#toc-entry-1">Bug Tracker</a></h1>
 <p>Do not contact contributors directly about support or help with technical issues.</p>
 </div>
 <div class="section" id="credits">
-<h1><a class="toc-backref" href="#toc-entry-2">Credits</a></h1>
+<h1><a class="toc-backref" href="#id5">Credits</a></h1>
 <div class="section" id="authors">
-<h2><a class="toc-backref" href="#toc-entry-3">Authors</a></h2>
+<h2><a class="toc-backref" href="#id6">Authors</a></h2>
 <ul class="simple">
 <li>Compassion Switzerland</li>
 </ul>
 </div>
 <div class="section" id="maintainers">
-<h2><a class="toc-backref" href="#toc-entry-4">Maintainers</a></h2>
+<h2><a class="toc-backref" href="#id7">Maintainers</a></h2>
 <p>This module is part of the <a class="reference external" href="https://github.com/CompassionCH/compassion-modules/tree/18.0/partner_communication">CompassionCH/compassion-modules</a> project on GitHub.</p>
 <p>You are welcome to contribute.</p>
 </div>
diff --git a/partner_communication/views/communication_config_view.xml b/partner_communication/views/communication_config_view.xml
index 5fdafe0bd..3260eca8d 100644
--- a/partner_communication/views/communication_config_view.xml
+++ b/partner_communication/views/communication_config_view.xml
@@ -41,6 +41,10 @@
                             <field name="report_id" />
                             <field name="attachments_function" />
                         </group>
+                        <group string="Campaign Tracking">
+                            <field name="medium_id" />
+                            <field name="campaign_id" />
+                        </group>
                     </group>
                     <separator string="Custom configuration" />
                     <field
@@ -104,6 +108,8 @@
                 <field name="need_call" />
                 <field name="print_if_not_email" />
                 <field name="report_id" />
+                <field name="medium_id" optional="hide" />
+                <field name="campaign_id" optional="hide" />
             </list>
         </field>
     </record>
@@ -123,6 +129,10 @@
                         <field name="need_call" />
                         <field name="report_id" />
                     </group>
+                    <group string="Campaign Tracking">
+                        <field name="medium_id" />
+                        <field name="campaign_id" />
+                    </group>
                 </group>
             </form>
         </field>
diff --git a/partner_communication/views/communication_job_view.xml b/partner_communication/views/communication_job_view.xml
index 83f8c7c02..9d55150f4 100644
--- a/partner_communication/views/communication_job_view.xml
+++ b/partner_communication/views/communication_job_view.xml
@@ -197,6 +197,10 @@
                     readonly="state in ('processing', 'done')"
                   />
                                 </group>
+                                <group string="Campaign Tracking">
+                                    <field name="medium_id" />
+                                    <field name="campaign_id" />
+                                </group>
                             </group>
                         </page>
                     </notebook>
@@ -225,6 +229,8 @@
                 <field name="state" />
                 <field name="need_call" optional="hide" />
                 <field name="sent_date" />
+                <field name="medium_id" optional="hide" />
+                <field name="campaign_id" optional="hide" />
                 <field name="activity_ids" column_invisible="1" />
                 <button
           name="send"
@@ -265,6 +271,8 @@
                 <field name="config_id" />
                 <field name="partner_id" />
                 <field name="user_id" />
+                <field name="medium_id" />
+                <field name="campaign_id" />
                 <filter
           string="Pending"
           name="pending"
@@ -308,6 +316,19 @@
             name="config"
             domain="[]"
             context="{'group_by':'config_id'}"
+          />
+                    <separator />
+                    <filter
+            string="Campaign"
+            name="campaign"
+            domain="[]"
+            context="{'group_by':'campaign_id'}"
+          />
+                    <filter
+            string="Medium"
+            name="medium"
+            domain="[]"
+            context="{'group_by':'medium_id'}"
           />
                 </group>
             </search>
diff --git a/partner_communication_compassion/__manifest__.py b/partner_communication_compassion/__manifest__.py
index 9060cf51d..77b9b12e0 100644
--- a/partner_communication_compassion/__manifest__.py
+++ b/partner_communication_compassion/__manifest__.py
@@ -29,7 +29,7 @@
 # pylint: disable=C8101
 {
     "name": "Compassion Partner Communications",
-    "version": "18.0.1.0.3",
+    "version": "18.0.1.0.4",
     "category": "Other",
     "author": "Compassion CH",
     "development_status": "Production/Stable",
diff --git a/partner_communication_compassion/models/partner_communication.py b/partner_communication_compassion/models/partner_communication.py
index 628c5497b..b991f86d1 100644
--- a/partner_communication_compassion/models/partner_communication.py
+++ b/partner_communication_compassion/models/partner_communication.py
@@ -22,8 +22,6 @@
 class PartnerCommunication(models.Model):
     _inherit = "partner.communication.job"
 
-    utm_campaign_id = fields.Many2one("utm.campaign", readonly=False)
-
     def get_correspondence_attachments(self, letters=None):
         """
         Include PDF of letters if the send_mode is to print the letters.