Have a resend option in sent mail
Have the option to resend an email that is in the sent mail folder for some who say they didn't get or their mail ISP may have blocked first one. Easier to hit send again with the option to edit prior to sending just as apple mail currently does. I love airmail and want to institute it for our organization due to all the current options as well as read receipts are a big thing in our company (law firm) since many say they didn't get a document when we would be easily able to prove with your app. Currently many are using Newton for this purpose which I , firm IT Admin, am banning from future use and purchase as it's a rip off price with low end features, other than the ability to use our design email signature which I hope you guys get as well soon.
Thanks so much and keep up the great work and support. Your chat support is #1 out of any app or product I've ever used. Love it!