Is there a size limit on email attachments? Scott Devaney February 14, 2018 23:46 Updated Follow For security and performance reasons, 50MB is the maximum size email that will be accepted by the incoming and outgoing mail servers. The best option would be to use a third party file transfer service like Google Drive or Dropbox. Related articles What can be done to reduce the amount of spam that is sent to an email account? Is anti-virus protection included with email? What types of email accounts are available and how can they be setup? Where do I create or manage email accounts? Comments 0 comments Article is closed for comments.