K-9 Mail Android App is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable notifications and more.
Price: Free
K9 Mail Android App is one of the best email clients for Android. It’s loaded with every email feature you could think of except ActiveSync (Push email, however IMAP integration syncs almost as fast as ActiveSync). By far a better replacement over the default email client created by Google (if you’ve read my gripe about the default email client deleting my inboxes article, you’ll know why). I personally like the iMAP folder synchronization, signatures and the ability to multi-manage several emails inboxes from a mobile device. Here is the complete list of features:
K9 Mail Android App is extremely useful, especially for those who are dependant on email.
Once you have your IMAP, POP3, and/or WebDAV (Exchange) accounts; everything else is typical of a mobile email client. Be sure to set your email preferences such as notifications and sync options. One usability perk K9 Mail offers over Gmail is the Previous/Next buttons, which makes browsing through emails convenient versus viewing a message then going back to the entire list every time.
If you use K9 Mail Android App as your default email client, then it is used probably daily.
The user interface recently has the added option of light background or classic dark. Gripe Alert: when viewing an email list in landscape mode (keyboard open), the email items are very small, could be difficult to read the small fonts.




(4.1 out of 5)
Should you Download K9 Mail? Yes! An Essential App for Email on Android aside of Gmail!
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It is the solution for LG eve GW620 / GW620R
Everything seems fine now after using K-9 (remove given POP3 mail)
I really like this client for routine daily use. 2 gripes / hopes for future devt:
1. Text on screen is way too small. Yes, you can zoom *if* using physical keyboard, but I avoid that, want to zoom, ideally pinch zoom but even tap zoom or some other method, using virtual keyboard. Bottm line: I need more control over font size.
2. Trash doesn’t work as expected / hoped.
a. Deleting trash on POP3. There’s an empty trash button, but after deleting, my trash is still full. Sometimes if I refresh, it’s fine, often I refresh and trash is still full. Huh? I can’t tell if it’s doing anything.
b. What I really want re trash is the option, on message by message basis — not only a global setting basis — to “send to trash AND del fr server at same time”, i.e. when I don’t need to view on my laptop later, and then also separate option to “send to trash but NOT del fr server”, i.e. when I don’t need to keep copy on my Droid, but do need to keep for my laptop later. Point is, I need to view but not store mail on Droid. I want to be able to del fr Droid, but sometimes keep mail for later viewing and sometimes del fr server.
Otherwise, K-9 is great.
I usability note, maybe obvious to others, but took me a while to find it: to select multiple messages at once, swipe the message. I kept trying to touch the left side green bar, and that opens rather than selecting the msg. Press to open one msg, swipe to select multiple for batch operations.
I love this email app except for one thing that is becoming extremely annoying. How do you EASILY add multiple contacts in cc or bcc????? It should give you the option to select from your contact list in lieu of having to remember the email of a gazillion contacts.
The one feature that is SORELY missed is the ability to MOVE emails from one directory to another.
http://code.google.com/p/k9mail/
and add any wishes