go back to paid for app model rather than subscription model!
totally absurd to take payment for an app then ignore upgrade suggestions for over 4 years while you work on a subscription based model which incorporates some of these features (themes) but to remove other features that were already paid for in the original purchase is ridiculous

I payed for this app. I shouldn't be getting banners asking for a subscription.

The black theme is awesome on the OLED screen, but if you choose to make gray letters it doesn’t work, on a black theme you have to put white letters.
Thanks.

More modern notification sounds.
Better email signature options.
Better spellcheck system/option.

When discuss become too long, find new attachments very hard or impossible

I do not want premium, yet the icon persists. Please remove.

You do the last upgrade and you get this annoying pop up without any clue how to disable it
What are doing at airmail?

When looking at the email with a long thread of previous email history, this thread is often not collapsed and it takes a few seconds to scroll it all down. Also the attachments are located below the thread, so it’s very easy to miss attachments

It is taking up screen space. It’s better if that is a one time notification, and users can find Premium in settings if they want

Great that you restored push to those of us who had paid for the app before. The annoying green subscription button that hangs over my inbox, should be removed.

It was inevitable you'd develop a paid version, but yanking back features from established users is a terrible idea. Proposing new spiffy features for $$ is fair (Dark Mode? Rules? Bullet proof spam filters?). But please don't screw your loyal user base. Airmail is better than iOS Mail but not so much better I won't jump to avoid annoying ads or feeling betrayed.

Why this subscription thing? One time payment would have been fine. I hate subscriptions - endless payments. I like your app but will know choose another ....

More complications would be nice for these watch faces

As above, include Brave browser in default browser list.

Have the abbility to select Microsoft Edge as browser, to make links open in Edge

Automatic dark mode (ios13)

Given increasing privacy concerns of mainstream browsers it would be nice to have support for Brave, which focuses on provacy and is build on chromium