You'll have to login to all of your accounts though.

I spent hours getting the thing to my satisfaction. I'm not going to undo that just because my mail app started acting stupid in one respect.

There's a little gear icon on your Android somewhere. You may have to hunt for it. That's Settings.

Let me know if you can find it and I'll help from there.

What I didn't find out is how to make it no default, at least from the point of view of my mail program. I think I've done as much as can be done though.

It's telling me how to do what I wanted undone.

If you know how to turn it on, it stands to reason you could go there and turn it off.

Good luck.

I at least changed the default browser to a different one than either the phone chose for me all by itself or chose for me by me clicking something accidentally. I've given up on what I wanted, which was for the email app to go back to asking me which browser I wanted to use and if I wanted to do it one time or always.

A very very first world problem, of course. I just hate it when I can't make technology do what I want it to do.

...there's an entry for Apps a screen or so down, within Settings. It's the 17th item on my Settings screen.

There's a 3-dot gadget in the upper right, and if you click it, you'll see a menu with several things, including Default apps on it.

Depending on your Android version, you should be able to change it in there. You can also Reset app preferences (same menu) and remove all your preferences for default launch apps.

That didn't let me get it back to asking every time but at least it let me set another browser as the default. That stupid browser seems to have set itself as the default for all my apps, not just mail. Heck of a thing when you have a little slip of a finger and you can't undo it. Although the browser that became the default was Samsung browser, and I wouldn't put it past them to make it the default and it wasn't my doing.