Google App Engine e-mail and attachment extensions
Question: In Google App Engine for python can I send e-mails with attachments that have
no extension? What are the allowed extensions? Can I send zip files as
attachments?


Answer: No you cannot send attachments with no extension. Last time I checked (SDK
1.6.3) all the extensions are allowed except the ones blacklisted in

    
    
    from google.appengine.api import mail
    mail.EXTENSION_BLACKLIST
    

I have also found out in practice that .zip files are not allowed although
.zip is not in that list as of 1.6.3.

This was first answered
[here](https://groups.google.com/forum/?fromgroups#!topic/google-appengine-
python/emfJkCuAzu4).

