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The following commit(s) were added to refs/heads/master by this push:
     new 6575cacc5d feat(reports): allowing the email mutator to update 
recipients (#27851)
6575cacc5d is described below

commit 6575cacc5d1cc59c7cacd9e186a1d05e76259183
Author: SkinnyPigeon <[email protected]>
AuthorDate: Wed May 29 03:03:42 2024 +0200

    feat(reports): allowing the email mutator to update recipients (#27851)
---
 superset/utils/core.py                 |  6 ++++++
 tests/integration_tests/email_tests.py | 30 ++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)

diff --git a/superset/utils/core.py b/superset/utils/core.py
index 37a11ea7ff..0e485d749c 100644
--- a/superset/utils/core.py
+++ b/superset/utils/core.py
@@ -714,6 +714,7 @@ def send_email_smtp(  # pylint: 
disable=invalid-name,too-many-arguments,too-many
         msg["CC"] = ", ".join(smtp_mail_cc)
         recipients = recipients + smtp_mail_cc
 
+    smtp_mail_bcc = []
     if bcc:
         # don't add bcc in header
         smtp_mail_bcc = get_email_address_list(bcc)
@@ -764,6 +765,11 @@ def send_email_smtp(  # pylint: 
disable=invalid-name,too-many-arguments,too-many
     msg_mutator = config["EMAIL_HEADER_MUTATOR"]
     # the base notification returns the message without any editing.
     new_msg = msg_mutator(msg, **(header_data or {}))
+    new_to = new_msg["To"].split(", ") if "To" in new_msg else []
+    new_cc = new_msg["Cc"].split(", ") if "Cc" in new_msg else []
+    new_recipients = new_to + new_cc + smtp_mail_bcc
+    if set(new_recipients) != set(recipients):
+        recipients = new_recipients
     send_mime_email(smtp_mail_from, recipients, new_msg, config, dryrun=dryrun)
 
 
diff --git a/tests/integration_tests/email_tests.py 
b/tests/integration_tests/email_tests.py
index c8bc137062..12c2fc676b 100644
--- a/tests/integration_tests/email_tests.py
+++ b/tests/integration_tests/email_tests.py
@@ -90,6 +90,36 @@ class TestEmailSmtp(SupersetTestCase):
         assert msg.get_payload()[-1].get_payload() == mimeapp.get_payload()
         app.config["EMAIL_HEADER_MUTATOR"] = base_email_mutator
 
+    @mock.patch("superset.utils.core.send_mime_email")
+    def test_send_smtp_with_email_mutator_changing_recipients(self, 
mock_send_mime):
+        attachment = tempfile.NamedTemporaryFile()
+        attachment.write(b"attachment")
+        attachment.seek(0)
+
+        # putting this into a variable so that we can reset after the test
+        base_email_mutator = app.config["EMAIL_HEADER_MUTATOR"]
+
+        def mutator(msg, **kwargs):
+            msg.replace_header("To", "mutated")
+            return msg
+
+        app.config["EMAIL_HEADER_MUTATOR"] = mutator
+        utils.send_email_smtp(
+            "to", "subject", "content", app.config, files=[attachment.name]
+        )
+        assert mock_send_mime.called
+        call_args = mock_send_mime.call_args[0]
+        logger.debug(call_args)
+        assert call_args[0] == app.config["SMTP_MAIL_FROM"]
+        assert call_args[1] == ["mutated"]
+        msg = call_args[2]
+        assert msg["Subject"] == "subject"
+        assert msg["From"] == app.config["SMTP_MAIL_FROM"]
+        assert len(msg.get_payload()) == 2
+        mimeapp = MIMEApplication("attachment")
+        assert msg.get_payload()[-1].get_payload() == mimeapp.get_payload()
+        app.config["EMAIL_HEADER_MUTATOR"] = base_email_mutator
+
     @mock.patch("superset.utils.core.send_mime_email")
     def test_send_smtp_data(self, mock_send_mime):
         utils.send_email_smtp(

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