Merge branch '5.2' into 5.x

OskarStark · OskarStark · commit 4ea85be9220e · 2021-03-11T13:12:10.000+01:00
* 5.2:
  Minor: Sort alphabetically
  doc(mailer): add Sendinblue to transports supporting tags and metadata
diff --git a/mailer.rst b/mailer.rst
@@ -1206,9 +1206,10 @@ If your transport does not support tags and metadata, they will be added as cust
 
 The following transports currently support tags and metadata:
 
-* Postmark
-* Mailgun
 * MailChimp
+* Mailgun
+* Postmark
+* Sendinblue
 
 Development & Debugging
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