Not soon enough a reminder, you say? So says Gmail. Employ the right wording in your message to promise files ("have attached"), and Gmail can remind you before it delivers the message if you have not, in fact, attached.
Get a Forgotten Attachment Reminder in Gmail
To get an alert from Gmail when you promise a file in your message but fail to attach any files:
- Remember to include the words
- "I have attached",
- "I've attached",
- "I have included",
- "I've included",
- "see the attached" or
- "attached file"