Add The Snooze Functionality To Sent Mail Right Click Menu

I often send an email with the requirement to follow up on it (e.g. payment for invoice chase), since this is a passive task and all the information required is in the email sent I really only need a reminder that it's been x days since the email was sent, the snooze function is perfect for that. So basically if I snooze a sent email for 1 week, it pops up the following week at the top of the inbox and I can just reply to all and remind the recipient of my previous email, then I can set another snooze on the newly sent email! The functionality is already pretty much there, just not available on sent emails.

If you wanted to take this a step further it would be great to have a follow-up option when composing mail but personally I prefer the former as the priority as I know I would forget and need to go to the sent mail and snooze after the fact. Both would be awesome though, the latter I haven't seen before so could be a USP for the product!