diff --git a/inbox/sendmail/message.py b/inbox/sendmail/message.py
index 685d5fc02..097b9afd0 100644
--- a/inbox/sendmail/message.py
+++ b/inbox/sendmail/message.py
@@ -20,7 +20,10 @@
 from flanker.addresslib import address
 from flanker.addresslib.quote import smart_quote
 from flanker.mime.message.headers.encoding import encode_string
-from flanker.addresslib.parser import MAX_ADDRESS_LENGTH
+try:
+    from flanker.addresslib.parser import MAX_ADDRESS_LENGTH
+except:
+    MAX_ADDRESS_LENGTH = 1024
 from html2text import html2text
 
 VERSION = pkg_resources.get_distribution('inbox-sync').version