E-mail File Attachments Size Limit
The largest piece of e-mail that you can send or accept from the Internet is 16 megabytes (MB). This includes the message text, headers and the attachment combined.
If the file you are trying to transfer exceeds 16 MB, you will need to either compress the file or split it into smaller parts.
If you attach multiple files, they will be zipped (compressed) into a single file by the AOL® software before they are sent out.