diff --git a/hgext/phabricator.py b/hgext/phabricator.py
--- a/hgext/phabricator.py
+++ b/hgext/phabricator.py
@@ -465,6 +465,7 @@
 
 @vcrcommand(b'phabsend',
          [(b'r', b'rev', [], _(b'revisions to send'), _(b'REV')),
+          (b'', b'branch', b'', _(b'comments review is for specific branch')),
           (b'', b'amend', True, _(b'update commit messages')),
           (b'', b'reviewer', [], _(b'specify reviewers')),
           (b'', b'confirm', None, _(b'ask for confirmation before sending'))],
@@ -496,6 +497,15 @@
 
     phabsend will check obsstore and the above association to decide whether to
     update an existing Differential Revision, or create a new one.
+
+    When working with multiple named branches, one can specify which branch your
+    reviews/differentials are intended for using --branch flag. Doing that,
+    phabsend will add a comment to your differential about that. For example::
+
+        `hg phabsend -r . --branch stable`
+
+    This will upload the parent of working directory and will add a comment on
+    related differential saying "This review is intented for stable branch".
     """
     revs = list(revs) + opts.get(b'rev', [])
     revs = scmutil.revrange(repo, revs)
@@ -524,6 +534,10 @@
     drevids = [] # [int]
     diffmap = {} # {newnode: diff}
 
+    bmsg = None
+    if opts.get(b'branch'):
+        bmsg = b"This review is intended for `%s` branch." % opts[b'branch']
+
     # Send patches one by one so we know their Differential Revision IDs and
     # can provide dependency relationship
     lastrevid = None
@@ -570,6 +584,12 @@
         drevids.append(newrevid)
         lastrevid = newrevid
 
+        if bmsg:
+            # comment on the new differential created the this review is for
+            # this certain branch
+            callconduit(repo, b'differential.createcomment',
+                        {b'revision_id': newrevid, b'message': bmsg})
+
     # Update commit messages and remove tags
     if opts.get(b'amend'):
         unfi = repo.unfiltered()