diff --git a/engine/apps/email/inbound.py b/engine/apps/email/inbound.py
index 76eec2aa..1780f00c 100644
--- a/engine/apps/email/inbound.py
+++ b/engine/apps/email/inbound.py
@@ -86,15 +86,18 @@ class InboundEmailWebhookView(AlertChannelDefiningMixin, APIView):
         # First try envelope_recipient field.
         # According to AnymailInboundMessage it's provided not by all ESPs.
         if message.envelope_recipient:
-            try:
-                token, domain = message.envelope_recipient.split("@")
-            except ValueError:
-                logger.error(
-                    f"get_integration_token_from_request: envelope_recipient field has unexpected format: {message.envelope_recipient}"
-                )
-                return None
-            if domain == live_settings.INBOUND_EMAIL_DOMAIN:
-                return token
+            recipients = message.envelope_recipient.split(",")
+            for recipient in recipients:
+                # if there is more than one recipient, the first matching the expected domain will be used
+                try:
+                    token, domain = recipient.strip().split("@")
+                except ValueError:
+                    logger.error(
+                        f"get_integration_token_from_request: envelope_recipient field has unexpected format: {message.envelope_recipient}"
+                    )
+                    continue
+                if domain == live_settings.INBOUND_EMAIL_DOMAIN:
+                    return token
         else:
             logger.info("get_integration_token_from_request: message.envelope_recipient is not present")
         """
@@ -152,7 +155,10 @@ class InboundEmailWebhookView(AlertChannelDefiningMixin, APIView):
 
     def get_sender_from_email_message(self, email: AnymailInboundMessage) -> str:
         try:
-            sender = email.from_email.addr_spec
+            if isinstance(email.from_email, list):
+                sender = email.from_email[0].addr_spec
+            else:
+                sender = email.from_email.addr_spec
         except AnymailInvalidAddress as e:
             # wasn't able to parse email address from message, return raw value from "From" header
             logger.warning(
diff --git a/engine/apps/email/tests/test_inbound_email.py b/engine/apps/email/tests/test_inbound_email.py
index a47b19f9..bf6ae5ae 100644
--- a/engine/apps/email/tests/test_inbound_email.py
+++ b/engine/apps/email/tests/test_inbound_email.py
@@ -1,4 +1,5 @@
 import json
+from textwrap import dedent
 
 import pytest
 from anymail.inbound import AnymailInboundMessage
@@ -9,8 +10,19 @@ from rest_framework.test import APIClient
 from apps.email.inbound import InboundEmailWebhookView
 
 
+@pytest.mark.parametrize(
+    "recipients,expected",
+    [
+        ("{token}@example.com", status.HTTP_200_OK),
+        ("{token}@example.com, another@example.com", status.HTTP_200_OK),
+        ("{token}@example.com, another@example.com", status.HTTP_200_OK),
+        ("{token}@other.com, {token}@example.com", status.HTTP_400_BAD_REQUEST),
+    ],
+)
 @pytest.mark.django_db
-def test_amazon_ses_provider_load(settings, make_organization_and_user_with_token, make_alert_receive_channel):
+def test_amazon_ses_provider_load(
+    settings, make_organization_and_user_with_token, make_alert_receive_channel, recipients, expected
+):
     settings.INBOUND_EMAIL_ESP = "amazon_ses"
     settings.INBOUND_EMAIL_DOMAIN = "example.com"
 
@@ -19,10 +31,10 @@ def test_amazon_ses_provider_load(settings, make_organization_and_user_with_toke
     organization, _, token = make_organization_and_user_with_token()
     _ = make_alert_receive_channel(organization, token=dummy_channel_token)
 
-    recipient = f"{dummy_channel_token}@example.com"
+    recipients = recipients.format(token=dummy_channel_token)
     mime = f"""From: sender@example.com
     Subject: Dummy email message
-    To: {recipient}
+    To: {recipients}
     Content-Type: text/plain
 
     Hello!
@@ -30,7 +42,7 @@ def test_amazon_ses_provider_load(settings, make_organization_and_user_with_toke
 
     message = {
         "notificationType": "Received",
-        "receipt": {"action": {"type": "SNS"}, "recipients": [recipient]},
+        "receipt": {"action": {"type": "SNS"}, "recipients": recipients.split(",")},
         "content": mime,
     }
 
@@ -54,7 +66,62 @@ def test_amazon_ses_provider_load(settings, make_organization_and_user_with_toke
         HTTP_X_AMZ_SNS_MESSAGE_ID=dummy_sns_message_id,
     )
 
-    assert response.status_code == status.HTTP_200_OK
+    assert response.status_code == expected
+
+
+@pytest.mark.parametrize(
+    "recipients,expected",
+    [
+        ("{token}@example.com", status.HTTP_200_OK),
+        ("{token}@example.com, another@example.com", status.HTTP_200_OK),
+        ("{token}@example.com, another@example.com", status.HTTP_200_OK),
+        ("{token}@other.com, {token}@example.com", status.HTTP_200_OK),
+        ("{token}@other.com, {token}@another.com", status.HTTP_400_BAD_REQUEST),
+    ],
+)
+@pytest.mark.django_db
+def test_mailgun_provider_load(
+    settings, make_organization_and_user_with_token, make_alert_receive_channel, recipients, expected
+):
+    settings.INBOUND_EMAIL_ESP = "mailgun"
+    settings.INBOUND_EMAIL_DOMAIN = "example.com"
+    settings.INBOUND_EMAIL_WEBHOOK_SECRET = "secret"
+
+    dummy_channel_token = "dummy-channel-token"
+
+    organization, _, token = make_organization_and_user_with_token()
+    _ = make_alert_receive_channel(organization, token=dummy_channel_token)
+
+    recipients = recipients.format(token=dummy_channel_token)
+    raw_event = {
+        "token": "06c96bafc3f42a66b9edd546347a2fe18dc23461fe80dc52f0",
+        "timestamp": "1461261330",
+        "signature": "dbb05e62be402448b36ffb81f6abfb888273c95617aa077b4da355b25bab3670",
+        "recipient": "{recipients}".format(recipients=recipients),
+        "sender": "envelope-from@example.org",
+        "body-mime": dedent(
+            """\
+        From: sender@example.com
+        Subject: Dummy email message
+        To: {recipients}
+        Content-Type: text/plain
+
+        Hello!
+        --94eb2c05e174adb140055b6339c5--
+        """.format(
+                recipients=recipients
+            )
+        ),
+    }
+
+    client = APIClient()
+    response = client.post(
+        reverse("integrations:inbound_email_webhook"),
+        data=raw_event,
+        HTTP_AUTHORIZATION=token,
+    )
+
+    assert response.status_code == expected
 
 
 @pytest.mark.parametrize(