diff --git a/ietf/doc/mails.py b/ietf/doc/mails.py
index ddecbb6b54..f20d398c3c 100644
--- a/ietf/doc/mails.py
+++ b/ietf/doc/mails.py
@@ -103,6 +103,61 @@ def email_stream_changed(request, doc, old_stream, new_stream, text=""):
               dict(text=text,
                    url=settings.IDTRACKER_BASE_URL + doc.get_absolute_url()),
               cc=cc)
+    
+def email_wg_call_for_adoption_issued(request, doc, cfa_duration_weeks=None):
+    if cfa_duration_weeks is None:
+        cfa_duration_weeks=2
+    (to, cc) = gather_address_lists("doc_wg_call_for_adoption_issued", doc=doc)
+    frm = request.user.person.formatted_email()
+
+    end_date = date_today(DEADLINE_TZINFO) + datetime.timedelta(days=7 * cfa_duration_weeks)
+
+    subject = f"Call for adoption: {doc.name}-{doc.rev}  (Ends {end_date})"
+
+    send_mail(
+        request,
+        to,
+        frm,
+        subject,
+        "doc/mail/wg_call_for_adoption_issued.txt",
+        dict(
+            doc=doc,
+            subject=subject,
+            url=settings.IDTRACKER_BASE_URL + doc.get_absolute_url(),
+            end_date=end_date,
+            cfa_duration_weeks=cfa_duration_weeks,
+            wg_list=doc.group.list_email,
+        ),
+        cc=cc,
+    )
+
+
+def email_wg_last_call_issued(request, doc, wglc_duration_weeks=None):
+    if wglc_duration_weeks is None:
+        wglc_duration_weeks = 2
+    (to, cc) = gather_address_lists("doc_wg_last_call_issued", doc=doc)
+    frm = request.user.person.formatted_email()
+
+
+    end_date = date_today(DEADLINE_TZINFO) + datetime.timedelta(days=7 * wglc_duration_weeks)
+    subject =  f"WG Last Call: {doc.name}-{doc.rev} (Ends {end_date})"
+
+    send_mail(
+        request,
+        to,
+        frm,
+        subject,
+        "doc/mail/wg_last_call_issued.txt",
+        dict(
+            doc=doc,
+            subject=subject,
+            url=settings.IDTRACKER_BASE_URL + doc.get_absolute_url(),
+            end_date=end_date,
+            wglc_duration_weeks=wglc_duration_weeks,
+            wg_list=doc.group.list_email,
+        ),
+        cc=cc,
+    )
 
 def email_pulled_from_rfc_queue(request, doc, comment, prev_state, next_state):
     extra=extra_automation_headers(doc)
diff --git a/ietf/doc/tests_draft.py b/ietf/doc/tests_draft.py
index 576feb0582..ab7eaba768 100644
--- a/ietf/doc/tests_draft.py
+++ b/ietf/doc/tests_draft.py
@@ -1707,11 +1707,12 @@ def test_adopt_document(self):
                 self.assertEqual(draft.group, chair_role.group)
                 self.assertEqual(draft.stream_id, stream_state_type_slug[type_id][13:]) # trim off "draft-stream-"
                 self.assertEqual(draft.docevent_set.count() - events_before, 5)
-                self.assertEqual(len(outbox), 1)
-                self.assertTrue("Call For Adoption" in outbox[-1]["Subject"])
-                self.assertTrue(f"{chair_role.group.acronym}-chairs@" in outbox[-1]['To'])
-                self.assertTrue(f"{draft.name}@" in outbox[-1]['To'])
-                self.assertTrue(f"{chair_role.group.acronym}@" in outbox[-1]['To'])
+                self.assertEqual(len(outbox), 2)
+                self.assertTrue("Call For Adoption" in outbox[0]["Subject"])
+                self.assertTrue(f"{chair_role.group.acronym}-chairs@" in outbox[0]['To'])
+                self.assertTrue(f"{draft.name}@" in outbox[0]['To'])
+                self.assertTrue(f"{chair_role.group.acronym}@" in outbox[0]['To'])
+                # contents of outbox[1] are tested elsewhere
 
             # adopt
             empty_outbox()
@@ -2001,6 +2002,200 @@ def test_set_state(self):
         self.assertTrue("mars-chairs@ietf.org" in outbox[0].as_string())
         self.assertTrue("marsdelegate@ietf.org" in outbox[0].as_string())
 
+    def test_wg_call_for_adoption_issued(self):
+        role = RoleFactory(
+            name_id="chair",
+            group__acronym="mars",
+            group__list_email="mars-wg@ietf.org",
+            person__user__username="marschairman",
+            person__name="WG Cháir Man",
+        )
+        # First test the usual workflow through the manage adoption view
+        draft = IndividualDraftFactory()
+        url = urlreverse(
+            "ietf.doc.views_draft.adopt_draft", kwargs=dict(name=draft.name)
+        )
+        login_testing_unauthorized(self, "marschairman", url)
+        empty_outbox()
+        call_issued = State.objects.get(type="draft-stream-ietf", slug="c-adopt")
+        r = self.client.post(
+            url,
+            dict(
+                comment="some comment",
+                group=role.group.pk,
+                newstate=call_issued.pk,
+                weeks="10",
+            ),
+        )
+        self.assertEqual(r.status_code, 302)
+        self.assertEqual(len(outbox), 2)
+        self.assertIn("mars-wg@ietf.org", outbox[1]["To"])
+        self.assertIn("Call for adoption", outbox[1]["Subject"])
+        body = get_payload_text(outbox[1])
+        self.assertIn("disclosure obligations", body)
+        self.assertIn("starts a 10-week", body)
+        # Test not entering a duration on the form
+        draft = IndividualDraftFactory()
+        url = urlreverse(
+            "ietf.doc.views_draft.adopt_draft", kwargs=dict(name=draft.name)
+        )
+        empty_outbox()
+        call_issued = State.objects.get(type="draft-stream-ietf", slug="c-adopt")
+        r = self.client.post(
+            url,
+            dict(
+                comment="some comment",
+                group=role.group.pk,
+                newstate=call_issued.pk,
+            ),
+        )
+        self.assertEqual(r.status_code, 302)
+        self.assertEqual(len(outbox), 2)
+        self.assertIn("mars-wg@ietf.org", outbox[1]["To"])
+        self.assertIn("Call for adoption", outbox[1]["Subject"])
+        body = get_payload_text(outbox[1])
+        self.assertIn("disclosure obligations", body)
+        self.assertIn("starts a 2-week", body)
+
+        # Test the less usual workflow of issuing a call for adoption 
+        # of a document that's already in the ietf stream
+        draft = WgDraftFactory(group=role.group)
+        url = urlreverse(
+            "ietf.doc.views_draft.change_stream_state",
+            kwargs=dict(name=draft.name, state_type="draft-stream-ietf"),
+        )
+        old_state = draft.get_state("draft-stream-%s" % draft.stream_id)
+        new_state = State.objects.get(
+            used=True, type="draft-stream-%s" % draft.stream_id, slug="c-adopt"
+        )
+        self.assertNotEqual(old_state, new_state)
+        empty_outbox()
+        r = self.client.post(
+            url,
+            dict(
+                new_state=new_state.pk,
+                comment="some comment",
+                weeks="10",
+                tags=[
+                    t.pk
+                    for t in draft.tags.filter(
+                        slug__in=get_tags_for_stream_id(draft.stream_id)
+                    )
+                ],
+            ),
+        )
+        self.assertEqual(r.status_code, 302)
+        self.assertEqual(len(outbox), 2)
+        self.assertIn("mars-wg@ietf.org", outbox[1]["To"])
+        self.assertIn("Call for adoption", outbox[1]["Subject"])
+        body = get_payload_text(outbox[1])
+        self.assertIn("disclosure obligations", body)
+        self.assertIn("starts a 10-week", body)
+        draft = WgDraftFactory(group=role.group)
+        url = urlreverse(
+            "ietf.doc.views_draft.change_stream_state",
+            kwargs=dict(name=draft.name, state_type="draft-stream-ietf"),
+        )
+        old_state = draft.get_state("draft-stream-%s" % draft.stream_id)
+        new_state = State.objects.get(
+            used=True, type="draft-stream-%s" % draft.stream_id, slug="c-adopt"
+        )
+        self.assertNotEqual(old_state, new_state)
+        empty_outbox()
+        r = self.client.post(
+            url,
+            dict(
+                new_state=new_state.pk,
+                comment="some comment",
+                tags=[
+                    t.pk
+                    for t in draft.tags.filter(
+                        slug__in=get_tags_for_stream_id(draft.stream_id)
+                    )
+                ],
+            ),
+        )
+        self.assertEqual(r.status_code, 302)
+        self.assertEqual(len(outbox), 2)
+        self.assertIn("mars-wg@ietf.org", outbox[1]["To"])
+        self.assertIn("Call for adoption", outbox[1]["Subject"])
+        body = get_payload_text(outbox[1])
+        self.assertIn("disclosure obligations", body)
+        self.assertIn("starts a 2-week", body)
+
+    def test_wg_last_call_issued(self):
+        role = RoleFactory(
+            name_id="chair",
+            group__acronym="mars",
+            group__list_email="mars-wg@ietf.org",
+            person__user__username="marschairman",
+            person__name="WG Cháir Man",
+        )
+        draft = WgDraftFactory(group=role.group)
+        url = urlreverse(
+            "ietf.doc.views_draft.change_stream_state",
+            kwargs=dict(name=draft.name, state_type="draft-stream-ietf"),
+        )
+        login_testing_unauthorized(self, "marschairman", url)
+        old_state = draft.get_state("draft-stream-%s" % draft.stream_id)
+        new_state = State.objects.get(
+            used=True, type="draft-stream-%s" % draft.stream_id, slug="wg-lc"
+        )
+        self.assertNotEqual(old_state, new_state)
+        empty_outbox()
+        r = self.client.post(
+            url,
+            dict(
+                new_state=new_state.pk,
+                comment="some comment",
+                weeks="10",
+                tags=[
+                    t.pk
+                    for t in draft.tags.filter(
+                        slug__in=get_tags_for_stream_id(draft.stream_id)
+                    )
+                ],
+            ),
+        )
+        self.assertEqual(r.status_code, 302)
+        self.assertEqual(len(outbox), 2)
+        self.assertIn("mars-wg@ietf.org", outbox[1]["To"])
+        self.assertIn("WG Last Call", outbox[1]["Subject"])
+        body = get_payload_text(outbox[1])
+        self.assertIn("disclosure obligations", body)
+        self.assertIn("starts a 10-week", body)
+        draft = WgDraftFactory(group=role.group)
+        url = urlreverse(
+            "ietf.doc.views_draft.change_stream_state",
+            kwargs=dict(name=draft.name, state_type="draft-stream-ietf"),
+        )
+        old_state = draft.get_state("draft-stream-%s" % draft.stream_id)
+        new_state = State.objects.get(
+            used=True, type="draft-stream-%s" % draft.stream_id, slug="wg-lc"
+        )
+        self.assertNotEqual(old_state, new_state)
+        empty_outbox()
+        r = self.client.post(
+            url,
+            dict(
+                new_state=new_state.pk,
+                comment="some comment",
+                tags=[
+                    t.pk
+                    for t in draft.tags.filter(
+                        slug__in=get_tags_for_stream_id(draft.stream_id)
+                    )
+                ],
+            ),
+        )
+        self.assertEqual(r.status_code, 302)
+        self.assertEqual(len(outbox), 2)
+        self.assertIn("mars-wg@ietf.org", outbox[1]["To"])
+        self.assertIn("WG Last Call", outbox[1]["Subject"])
+        body = get_payload_text(outbox[1])
+        self.assertIn("disclosure obligations", body)
+        self.assertIn("starts a 2-week", body)
+
     def test_pubreq_validation(self):
         role = RoleFactory(name_id='chair',group__acronym='mars',group__list_email='mars-wg@ietf.org',person__user__username='marschairman',person__name='WG Cháir Man')
         RoleFactory(name_id='delegate',group=role.group,person__user__email='marsdelegate@ietf.org')
diff --git a/ietf/doc/views_draft.py b/ietf/doc/views_draft.py
index c80537afb3..16d04ee66a 100644
--- a/ietf/doc/views_draft.py
+++ b/ietf/doc/views_draft.py
@@ -28,6 +28,7 @@
     IanaExpertDocEvent, IESG_SUBSTATE_TAGS)
 from ietf.doc.mails import ( email_pulled_from_rfc_queue, email_resurrect_requested,
     email_resurrection_completed, email_state_changed, email_stream_changed,
+    email_wg_call_for_adoption_issued, email_wg_last_call_issued,
     email_stream_state_changed, email_stream_tags_changed, extra_automation_headers,
     generate_publication_request, email_adopted, email_intended_status_changed,
     email_iesg_processing_document, email_ad_approved_doc,
@@ -1568,8 +1569,15 @@ def adopt_draft(request, name):
 
                 update_reminder(doc, "stream-s", e, due_date)
 
+                # The following call name is very misleading - the view allows 
+                # setting states that are _not_ the adopted state.
                 email_adopted(request, doc, prev_state, new_state, by, comment)
 
+                # Currently only the IETF stream uses the c-adopt state - guard against other
+                # streams starting to use it asthe IPR rules for those streams will be different.
+                if doc.stream_id == "ietf" and new_state.slug == "c-adopt":
+                    email_wg_call_for_adoption_issued(request, doc, cfa_duration_weeks=form.cleaned_data["weeks"])
+
             # comment
             if comment:
                 e = DocEvent(type="added_comment", doc=doc, rev=doc.rev, by=by)
@@ -1754,13 +1762,20 @@ def change_stream_state(request, name, state_type):
                 events.append(e)
 
                 due_date = None
-                if form.cleaned_data["weeks"] != None:
+                if form.cleaned_data["weeks"] is not None:
                     due_date = datetime_today(DEADLINE_TZINFO) + datetime.timedelta(weeks=form.cleaned_data["weeks"])
 
                 update_reminder(doc, "stream-s", e, due_date)
 
                 email_stream_state_changed(request, doc, prev_state, new_state, by, comment)
 
+                if doc.stream_id == "ietf":
+                    if new_state.slug == "c-adopt":
+                        email_wg_call_for_adoption_issued(request, doc, cfa_duration_weeks=form.cleaned_data["weeks"])
+                    
+                    if new_state.slug == "wg-lc":
+                        email_wg_last_call_issued(request, doc, wglc_duration_weeks=form.cleaned_data["weeks"])
+
             # tags
             existing_tags = set(doc.tags.all())
             new_tags = set(form.cleaned_data["tags"])
diff --git a/ietf/mailtrigger/migrations/0006_call_for_adoption_and_last_call_issued.py b/ietf/mailtrigger/migrations/0006_call_for_adoption_and_last_call_issued.py
new file mode 100644
index 0000000000..7adad150eb
--- /dev/null
+++ b/ietf/mailtrigger/migrations/0006_call_for_adoption_and_last_call_issued.py
@@ -0,0 +1,43 @@
+# Copyright The IETF Trust 2023, All Rights Reserved
+
+from django.db import migrations
+
+
+def forward(apps, schema_editor):
+    MailTrigger = apps.get_model("mailtrigger", "MailTrigger")
+    Recipient = apps.get_model("mailtrigger", "Recipient")
+    recipients = list(
+        Recipient.objects.filter(
+            slug__in=(
+                "doc_group_mail_list",
+                "doc_authors",
+                "doc_group_chairs",
+                "doc_shepherd",
+            )
+        )
+    )
+    call_for_adoption = MailTrigger.objects.create(
+        slug="doc_wg_call_for_adoption_issued",
+        desc="Recipients when a working group call for adoption is issued",
+    )
+    call_for_adoption.to.add(*recipients)
+    wg_last_call = MailTrigger.objects.create(
+        slug="doc_wg_last_call_issued",
+        desc="Recipients when a working group last call is issued",
+    )
+    wg_last_call.to.add(*recipients)
+
+
+def reverse(apps, schema_editor):
+    MailTrigger = apps.get_model("mailtrigger", "MailTrigger")
+    MailTrigger.objects.filter(
+        slug_in=("doc_wg_call_for_adoption_issued", "doc_wg_last_call_issued")
+    ).delete()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("mailtrigger", "0005_rfc_recipients"),
+    ]
+
+    operations = [migrations.RunPython(forward, reverse)]
diff --git a/ietf/name/fixtures/names.json b/ietf/name/fixtures/names.json
index 0724cbb4b5..c94e15a459 100644
--- a/ietf/name/fixtures/names.json
+++ b/ietf/name/fixtures/names.json
@@ -5116,6 +5116,34 @@
     "model": "mailtrigger.mailtrigger",
     "pk": "doc_telechat_details_changed"
   },
+  {
+    "fields": {
+      "cc": [],
+      "desc": "Recipients when a working group call for adoption is issued",
+      "to": [
+        "doc_authors",
+        "doc_group_chairs",
+        "doc_group_mail_list",
+        "doc_shepherd"
+      ]
+    },
+    "model": "mailtrigger.mailtrigger",
+    "pk": "doc_wg_call_for_adoption_issued"
+  },
+  {
+    "fields": {
+      "cc": [],
+      "desc": "Recipients when a working group last call is issued",
+      "to": [
+        "doc_authors",
+        "doc_group_chairs",
+        "doc_group_mail_list",
+        "doc_shepherd"
+      ]
+    },
+    "model": "mailtrigger.mailtrigger",
+    "pk": "doc_wg_last_call_issued"
+  },
   {
     "fields": {
       "cc": [],
diff --git a/ietf/templates/doc/mail/wg_call_for_adoption_issued.txt b/ietf/templates/doc/mail/wg_call_for_adoption_issued.txt
new file mode 100644
index 0000000000..c4a2401bc2
--- /dev/null
+++ b/ietf/templates/doc/mail/wg_call_for_adoption_issued.txt
@@ -0,0 +1,21 @@
+{% load ietf_filters %}{% load mail_filters %}{% autoescape off %}{% filter wordwrap:78 %}
+Subject: {{ subject }}
+
+This message starts a {{ cfa_duration_weeks }}-week Call for Adoption for this document. 
+
+Abstract: 
+{{ doc.abstract }}
+
+File can be retrieved from:
+{{ url }}
+
+Please reply to this message keeping {{ wg_list }} in copy by indicating whether you support or not the adoption of this draft as a WG document. Comments to motivate your preference are highly appreciated. 
+
+Authors, and WG participants in general, are reminded of the Intellectual Property Rights (IPR) disclosure obligations described in BCP 79 [2]. Appropriate IPR disclosures required for full conformance with the provisions of BCP 78 [1] and BCP 79 [2] must be filed, if you are aware of any. Sanctions available for application to violators of IETF IPR Policy can be found at [3].
+
+Thank you.
+[1] https://datatracker.ietf.org/doc/bcp78/
+[2] https://datatracker.ietf.org/doc/bcp79/
+[3] https://datatracker.ietf.org/doc/rfc6701/
+{% endfilter %}
+{% endautoescape %}
diff --git a/ietf/templates/doc/mail/wg_last_call_issued.txt b/ietf/templates/doc/mail/wg_last_call_issued.txt
new file mode 100644
index 0000000000..35b1e149d7
--- /dev/null
+++ b/ietf/templates/doc/mail/wg_last_call_issued.txt
@@ -0,0 +1,22 @@
+{% load ietf_filters %}{% load mail_filters %}{% autoescape off %}{% filter wordwrap:78 %}
+Subject: {{ subject }}
+
+This message starts a {{ wglc_duration_weeks }}-week WG Last Call for this document. 
+
+Abstract: 
+{{ doc.abstract }}
+
+File can be retrieved from:
+{{ url }}
+
+Please review and indicate your support or objection to proceed with the publication of this document by replying to this email keeping {{ wg_list }} in copy. Objections should be motivated and suggestions to resolve them are highly appreciated.
+
+Authors, and WG participants in general, are reminded again of the Intellectual Property Rights (IPR) disclosure obligations described in BCP 79 [1]. Appropriate IPR disclosures required for full conformance with the provisions of BCP 78 [1] and BCP 79 [2] must be filed, if you are aware of any. Sanctions available for application to violators of IETF IPR Policy can be found at [3].
+
+Thank you.
+
+[1] https://datatracker.ietf.org/doc/bcp78/
+[2] https://datatracker.ietf.org/doc/bcp79/
+[3] https://datatracker.ietf.org/doc/rfc6701/
+{% endfilter %}
+{% endautoescape %}