I am struggling with this kind of Google Apps -site, example from Google.com -site here.

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I use two email-clients in Android: default Gmail -client (because it is tied to my Gmail) and K9. I am able to set up all Gmails to K9 but one email i.e. the firm email from the site https://www.google.com/a/firm.com (excluding ofc the Android-tied-gmail -account, more here). It means that I am using K9 and default Gmail-Android -program but I would like to have all emails under K9. Is it possible and how can do it here in the case of the Gmails targeted to firms? I think such gmails are called something like Google App or something like that, not sure.

The firm Gmail is not accepted like this in K9:

Username: forname.surname

Password: correct

IMAP server: mail.myFirm.com

Security type: SSL (always)

Port: 993

Use compression on network: Mobile Wi-Fi Other

If I change the IMAP -server to mail.gmail.com, it gets accepted but it won't work correctly -- redirection problem. But now I am stucked why it does not accept the above settings?!

Perhaps useful to other like-minded

  1. All emails under K9 -app?

  2. Email-client with Sent emails from many emails under IMAP?

  3. Setting up IMAP over device-swarm that has a Debian Desktop -client, more here.

  • ...this issue is solved!
    – hhh
    Commented Sep 11, 2012 at 23:33

1 Answer 1


The default settings by K9 have at least two mistakes:

  1. use imap.gmail.com instead of mail.gmail.com.

  2. use full emails for usernames such as [email protected], not just forname.surname.

Example settings

Incoming Email settings

Username: [email protected]

Password: correct

IMAP server: imap.gmail.com

Security type: SSL (always)

Port: 993

Use compression on network: Mobile Wi-Fi Other

Outgoing Email settings

Outgoing Server Name: smtp.gmail.com

Use Authentication: Yes

Use STARTTLS: Yes (some clients call this SSL)

Outgoing Server Port: 465 or 587

Username: [email protected]

Some useful information extracted from this blog here.

  • That is not a feasible solution! K-9 Mail is a google project and google needs to fix that K-9 can connect in a secure way to gmail servers.
    – mcantsin
    Commented Apr 4, 2016 at 8:44

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