Google GMAIL add on check attachment on send

Question

Is there a way to capture the send event in the compose interface so that checks can be done on the email being sent?

Thank you.

Answer 1

As we can read from here, "there are no email-based triggers in Apps Script".

On the other hand, client side InboxSDK library makes it possible to capture ComposeView sending and sent events. Probably you can use it in custom browser extentions to solve your task.