How do I block mail from a specific sender?
What is the largest message I can receive?
With an @Mail email account, you can receive and send messages up to $pref['max_msg_size'] MB. Therefore, the total encoded size of the email message you are sending cannot exceed $pref['max_msg_size'] MB.
NOTE: When attaching files to your email message, they must be encoded and in doing so, will increase in size. The attachments sent with email have to be translated into a different format so that other email programs can read it. This type of transformation will add about 33% to the original size of the attachment. Therefore, due to the translation a 2MB attachment may turn into a 2.66MB email after encoding.