Don't Forget the Attachment

I accidentally ran into an automatic feature of Gmail the other day that I found useful, as it saved me from having to send a corrective e-mail. So, it turns out that if the body of your e-mail contains text that is indicative of your intent to attach a file, but you neglect to attach a file, then Gmail warns you of your potential omission.

After a little playing around, here are some phrases that trigger the warning:

"Attached is"
"Attached are"
"I've attached"
"Find the attached"
"See the attached"
"Attached file"

Here are some phrases that do not trigger the warning, but probably should:

"Attached a file"
"A file attached"
"Check out the attachment"
"File attachment"
"Attached document"
"Attached spreadsheet"