diff --git a/ietf/doc/mails.py b/ietf/doc/mails.py
index 28a26ead8..3948d775c 100644
--- a/ietf/doc/mails.py
+++ b/ietf/doc/mails.py
@@ -635,3 +635,12 @@ def email_charter_internal_review(request, charter):
               cc=addrs.cc,
               extra={'Reply-To': ["irsg@irtf.org" if charter.group.type_id == 'rg' else "iesg@ietf.org", ]},
              )
+
+def email_lc_to_yang_doctors(request, doc):
+    addrs = gather_address_lists('last_call_of_doc_with_yang_issued')
+    send_mail(request, addrs.to, settings.DEFAULT_FROM_EMAIL,
+              'Attn YangDoctors: IETF LC issued for %s' % doc.name ,
+              'doc/mail/lc_to_yang_doctors.txt',
+              dict(doc=doc, url=settings.IDTRACKER_BASE_URL + doc.get_absolute_url() ),
+              cc = addrs.cc,
+             )
\ No newline at end of file
diff --git a/ietf/doc/tests.py b/ietf/doc/tests.py
index 247e43d31..288fac75f 100644
--- a/ietf/doc/tests.py
+++ b/ietf/doc/tests.py
@@ -1220,6 +1220,7 @@ class EmailAliasesTests(TestCase):
     def setUp(self):
         WgDraftFactory(name='draft-ietf-mars-test',group__acronym='mars')
         WgDraftFactory(name='draft-ietf-ames-test',group__acronym='ames')
+        RoleFactory(group__type_id='review', group__acronym='yangdoctors', name_id='secr')
         self.doc_alias_file = NamedTemporaryFile(delete=False, mode='w+')
         self.doc_alias_file.write("""# Generated by hand at 2015-02-12_16:26:45
 virtual.ietf.org anything
diff --git a/ietf/doc/tests_ballot.py b/ietf/doc/tests_ballot.py
index 3c1f670e3..d72441b4a 100644
--- a/ietf/doc/tests_ballot.py
+++ b/ietf/doc/tests_ballot.py
@@ -16,7 +16,7 @@ from ietf.doc.models import ( Document, State, DocEvent,
 from ietf.doc.factories import DocumentFactory, IndividualDraftFactory, IndividualRfcFactory, WgDraftFactory
 from ietf.doc.utils import create_ballot_if_not_open
 from ietf.group.models import Group, Role
-from ietf.group.factories import GroupFactory, RoleFactory
+from ietf.group.factories import GroupFactory, RoleFactory, ReviewTeamFactory
 from ietf.ipr.factories import HolderIprDisclosureFactory
 from ietf.name.models import BallotPositionName
 from ietf.iesg.models import TelechatDate
@@ -804,6 +804,42 @@ class MakeLastCallTests(TestCase):
 
         self.assertTrue("Last Call" in draft.message_set.order_by("-time")[0].subject)
 
+    def test_make_last_call_yang_document(self):
+        yd = ReviewTeamFactory(acronym='yangdoctors')
+        secr_email = RoleFactory(group=yd,name_id='secr').person.email().address
+        draft = WgDraftFactory()
+        submission = draft.submission_set.create(
+            state_id = 'posted',
+            name = draft.name,
+            group = draft.group,
+            rev = draft.rev,
+            authors = '[]',
+        )
+        submission.checks.create(
+            checker = 'yang validation',
+            passed = True,
+        )
+
+
+        url = urlreverse('ietf.doc.views_ballot.make_last_call', kwargs=dict(name=draft.name))
+        login_testing_unauthorized(self, 'secretary', url)
+
+        mailbox_before = len(outbox)
+
+        last_call_sent_date = datetime.date.today()
+        expire_date = last_call_sent_date+datetime.timedelta(days=14)
+        
+        r = self.client.post(url,
+                             dict(last_call_sent_date=last_call_sent_date,
+                                  last_call_expiration_date=expire_date
+                                  ))
+        self.assertEqual(r.status_code, 302)
+        self.assertEqual(len(outbox), mailbox_before + 3) 
+        self.assertIn("ietf-announce@", outbox[-3]['To'])
+        self.assertIn("drafts-lastcall@icann.org", outbox[-2]['To'])
+        self.assertIn(secr_email, outbox[-1]['To'])
+
+
 class DeferUndeferTestCase(TestCase):
     def helper_test_defer(self,name):
 
diff --git a/ietf/doc/views_ballot.py b/ietf/doc/views_ballot.py
index 2ba13ed66..f8a992e14 100644
--- a/ietf/doc/views_ballot.py
+++ b/ietf/doc/views_ballot.py
@@ -26,7 +26,8 @@ from ietf.doc.utils import ( add_state_change_event, close_ballot, close_open_ba
 from ietf.doc.mails import ( email_ballot_deferred, email_ballot_undeferred, 
     extra_automation_headers, generate_last_call_announcement, 
     generate_issue_ballot_mail, generate_ballot_writeup, generate_ballot_rfceditornote,
-    generate_approval_mail, email_irsg_ballot_closed, email_irsg_ballot_issued )
+    generate_approval_mail, email_irsg_ballot_closed, email_irsg_ballot_issued,
+    email_lc_to_yang_doctors )
 from ietf.doc.lastcall import request_last_call
 from ietf.doc.templatetags.ietf_filters import can_ballot
 from ietf.iesg.models import TelechatDate
@@ -1046,6 +1047,10 @@ def make_last_call(request, name):
 
             doc.save_with_history(events)
 
+            sub = doc.submission()
+            if sub and sub.has_yang():
+                email_lc_to_yang_doctors(request, doc)
+
             return HttpResponseRedirect(doc.get_absolute_url())
     else:
         initial = {}
diff --git a/ietf/mailtrigger/migrations/0017_lc_to_yang_doctors.py b/ietf/mailtrigger/migrations/0017_lc_to_yang_doctors.py
new file mode 100644
index 000000000..6685d857f
--- /dev/null
+++ b/ietf/mailtrigger/migrations/0017_lc_to_yang_doctors.py
@@ -0,0 +1,38 @@
+# Copyright The IETF Trust 2019-2020, 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')
+
+    Recipient.objects.create(
+        slug = 'yang_doctors_secretaries',
+        desc = 'Yang Doctors Secretaries',
+        template = ''
+    )
+
+    lc_to_yang_doctors = MailTrigger.objects.create(
+        slug='last_call_of_doc_with_yang_issued',
+        desc='Recipients when IETF LC is issued on a document with yang checks',
+    )
+
+    lc_to_yang_doctors.to.set(Recipient.objects.filter(slug='yang_doctors_secretaries'))
+
+def reverse(apps, schema_editor):
+    MailTrigger = apps.get_model('mailtrigger', 'MailTrigger')
+    Recipient = apps.get_model('mailtrigger', 'Recipient')
+
+    MailTrigger.objects.filter(slug='last_call_of_doc_with_yang_issued').delete()
+    Recipient.objects.filter(slug='yang_doctors_secretaries').delete()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mailtrigger', '0016_add_irsg_ballot_issued'),
+    ]
+
+    operations = [
+        migrations.RunPython(forward, reverse),
+    ]
diff --git a/ietf/mailtrigger/models.py b/ietf/mailtrigger/models.py
index c1b1dedb3..3df49bf45 100644
--- a/ietf/mailtrigger/models.py
+++ b/ietf/mailtrigger/models.py
@@ -7,6 +7,7 @@ from django.template import Template, Context
 
 from email.utils import parseaddr
 from ietf.utils.mail import formataddr, get_email_addresses_from_text
+from ietf.group.models import Group
 from ietf.person.models import Email, Alias
 from ietf.review.models import ReviewTeamSettings
 
@@ -367,3 +368,6 @@ class Recipient(models.Model):
                 for role in review_req.team.parent.role_set.filter(name='ad'):
                     addrs.append(role.email.address)
         return addrs
+
+    def gather_yang_doctors_secretaries(self, **kwargs):
+        return self.gather_group_secretaries(group=Group.objects.get(acronym='yangdoctors'))
diff --git a/ietf/name/fixtures/names.json b/ietf/name/fixtures/names.json
index d9f2ef3de..21253571c 100644
--- a/ietf/name/fixtures/names.json
+++ b/ietf/name/fixtures/names.json
@@ -3940,6 +3940,17 @@
     "model": "mailtrigger.mailtrigger",
     "pk": "last_call_issued_iana"
   },
+  {
+    "fields": {
+      "cc": [],
+      "desc": "Recipients when IETF LC is issued on a document with yang checks",
+      "to": [
+        "yang_doctors_secretaries"
+      ]
+    },
+    "model": "mailtrigger.mailtrigger",
+    "pk": "last_call_of_doc_with_yang_issued"
+  },
   {
     "fields": {
       "cc": [
@@ -5543,6 +5554,14 @@
     "model": "mailtrigger.recipient",
     "pk": "submission_submitter"
   },
+  {
+    "fields": {
+      "desc": "Yang Doctors Secretaries",
+      "template": ""
+    },
+    "model": "mailtrigger.recipient",
+    "pk": "yang_doctors_secretaries"
+  },
   {
     "fields": {
       "name": "Area meetings cannot conflict with anything else in their area",
@@ -14886,7 +14905,7 @@
     "fields": {
       "command": "xym",
       "switch": "--version",
-      "time": "2020-08-04T00:13:15.604",
+      "time": "2020-08-12T00:12:54.984",
       "used": true,
       "version": "xym 0.4.8"
     },
@@ -14897,7 +14916,7 @@
     "fields": {
       "command": "pyang",
       "switch": "--version",
-      "time": "2020-08-04T00:13:16.892",
+      "time": "2020-08-12T00:12:56.359",
       "used": true,
       "version": "pyang 2.3.2"
     },
@@ -14908,7 +14927,7 @@
     "fields": {
       "command": "yanglint",
       "switch": "--version",
-      "time": "2020-08-04T00:13:17.151",
+      "time": "2020-08-12T00:12:56.632",
       "used": true,
       "version": "yanglint SO 1.6.7"
     },
@@ -14919,7 +14938,7 @@
     "fields": {
       "command": "xml2rfc",
       "switch": "--version",
-      "time": "2020-08-04T00:13:18.980",
+      "time": "2020-08-12T00:12:58.366",
       "used": true,
       "version": "xml2rfc 2.47.0"
     },
diff --git a/ietf/submit/models.py b/ietf/submit/models.py
index ae21aec92..2a71e3416 100644
--- a/ietf/submit/models.py
+++ b/ietf/submit/models.py
@@ -73,6 +73,9 @@ class Submission(models.Model):
     def latest_checks(self):
         checks = [ self.checks.filter(checker=c).latest('time') for c in self.checks.values_list('checker', flat=True).distinct() ]
         return checks
+
+    def has_yang(self):
+        return any ( [ c.checker=='yang validation' and c.passed is not None for c in self.latest_checks()] )
         
 class SubmissionCheck(models.Model):
     time = models.DateTimeField(default=datetime.datetime.now)
diff --git a/ietf/templates/doc/mail/lc_to_yang_doctors.txt b/ietf/templates/doc/mail/lc_to_yang_doctors.txt
new file mode 100644
index 000000000..80b82c909
--- /dev/null
+++ b/ietf/templates/doc/mail/lc_to_yang_doctors.txt
@@ -0,0 +1,4 @@
+{% load ietf_filters %}{% autoescape off %}{% filter wordwrap:78 %}
+IETF Last Call has been issued for a document with yang checks.
+
+The document is available at {{ url }}{% endfilter %}{% endautoescape %}
\ No newline at end of file