Deleting a stuck mail on iPad

I have a piece of mail stuck in my outbox's and it has been there since last night. I use my Scanner Pro and try to send a scanned document and it is stuck.

I can't click edit to delete it it won't let me slide to delete it or anything. It just keeps acting like it's sending but it's been doing that for over 12 hours. I can't send anything else or do anything else with my mail because of it. Also excuse any typos or errors because I'm talking to type

 

Yes I did and it didn't work, but I looked it up (why don't I ever do that FIRST), and it said to put the phone/pad in airplane mode then go into mail and it would give you the option to delete it from your outbox. I did it, and it worked, so all is well.

Note to self: don't try to scan 19 page docs and send all at once with crappy data signal.