AquaMail is an email app for Internet and Exchange mail, for Android 4.0.3 and higher.
Easy automatic setup for popular email services:
Gmail, Yahoo, Hotmail, FastMail, Apple mail services (@me.com / @mac.com), GMX, AOL, and more. Recognizes mail accounts hosted at Google Apps, Yahoo BizMail, and others.WHAT’S NEW
+ Undo for message deletions and similar actions. Settings -> Confirmations and undo.
+ “Replace contact names”, app settings -> Contacts.
+ Exchange: now possible to “accept” invites without sending a response.
+ Calendar invite previews: show other events from the invite’s day.
+ Contact images in message list widget, app settings -> widgets, defaults to enabled on Android 5.0+.
+ Message editor: new feature, background (fill) color.
+ OAUTH2 authentication for Hotmail. To switch an already existing account, check mail there once, then long press (the account) -> account setup.
+ Made possible to cache attachments (not save) on the microSd memory card. Android 5.0+, app settings -> look and feel.
+ Conversations: made possible to combine messages by sender and subject even if otherwise unrelated. App settings -> conversations.