Really, now.

[brooksmoses]

Just how hard would it be to write a Thunderbird plugin that checks outgoing emails for phrases such as "attached is" or "I have attached" or whatnot in unquoted text, and if it finds them checks the email to see if there actually is an attachment -- and, if the phrases are present but no attachments, pops up a dialog box saying, "Did you mean to add an attachment?"

Sigh. It couldn't be harder than fixing the part of my brain that's always forgetting the attachments.