Attached please find a feature suggestion

I just sent the following to Apple. This should become a standard feature of all email clients:

"It is common for email senders to write emails where they mention an attachment and then forget to include the attachment. To help safeguard against this, Mail.app should include a setting that can be enabled to scan all outgoing messages for the words "attach, attached, attaching, attachment" (and any other relevant terms, including support for multiple languages)- and if those words are present, and no attachment has been added to the message, Mail should present the user with a warning asking the user if he/she meant to include an attachment and presenting the option to do so."