Undo send
After you press Send, the bar at the foot of the mailbox reads Sending with Undo for a few seconds, then Sent. Undo opens the email again exactly as you wrote it, attachments included, in the same conversation.
Choose how long it waits in Settings › My email: off, 5, 10, 20 or 30 seconds. It is 10 unless you change it. An email you scheduled with Send later is not held again.
Remind me if no reply
The bell beside Send later offers 2 days, 3 days, 5 days or A date. If nothing has come back by then, you are told on the bell and on your phone, and the conversation reads No reply yet on Waiting. If they answer first, the reminder quietly goes away.
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