Sending Attachments to your List
By default, attachments are allowed to go to any new mailing list.
Mail-List.com will accept attachments up to 25 megabytes in size, and send those same files out to all subscribers.
However, not all ISP's will accept big files, and many times attachments get caught by the spam filters at your subscriber's ISP.
The Clickable Links option solves those problems by keeping the attachments on our server, and automatically inserting a link to the attachment in the email.
See the lesson on Sending Attachments as Clickable Links for more information.
To keep any attachment from going to your list, you must change the default settings
Log in to your mailing list at http://database.mail-list.com and click on the Customize Your List button
Expand the section on "Mobile First" Formatting
Make sure the option for Format All Email For Small Screens is Yes the option for Allow Attachments is No.
Now any attachments sent to your list will be removed before sending the email to all of your subscribers.