Help Article What is the maximum email message size?
Our servers allow messages of over 20MB to be sent or received, however many ISP’s or mail programmes have a lower limit which will restrict your effective mail message size.
Sharing messages of over 10MB is not recommended, as mail is not an efficient means of sharing large documents.
Rather make use of platforms such as Dropbox, which allow you to easily upload large documents and then simply forward a download link to the recipient.
To restrict the maximum size of emails that you receive, you can set a message size limit per mailbox on your domain via konsoleH.