Aqua Mail

Aqua Mail is an email client that is fully compatible with other email services via standard Internet mail protocol (IMAP, POP3, SMTP). That means that if you have accounts on Gmail, Yahoo, Hotmail, FastMail, or Apple, you can set up the app without any problems.

The app interface is similar to earlier versions of the official Gmail app. But that's only true visually speaking, since Aqua Mail also comes with a handful of unique features, from integration with popular Android apps to auto-adjusted images.

The Lite version of Aqua Mail is free to download. This version is limited to only one account and adds an Aqua Mail signature on all emails sent from the app. Of course, this can be changed by buying the full version.

Aqua Mail is an excellent email client for Android which lets you customize your email accounts individually and offers tons of additional options. Visually speaking, it looks like Gmail, but as far as performance is concerned, it's much closer to K-9.