reference here:

(A necro of a two year old thread, I realize, but it comes up in google searches)

I think you are missing the point of the user inbox . The goal is not to reflect your regular email inbox by fetching all the emails you receive in it. The goal of the Inbox in Messaging tab is to centralize all the OpenERP notifications that you could receive in the context of OpenERP (typically for the documents you "follow").

Try this:

1. Configuration > Configuration > General Settings, section domain alias, turn it to yours (example: if your address is myaddress@gmail.com, set this to gmail.com).

2. Configuration > Users > Users, select one user (the admin, for example) and go to their Preferences tab. Set their messaging alias to your account alias (example: if your address is myaddress@gnail.com, set this to myaddress).

3. Create your incoming mail server. Configuration > Technical > Incoming Mail Servers, create a new one. (Let's put an example with IMAP: set the name: whichever you want, server type: IMAP server, server name: imap@gmail.com -if your address is a google one-, port: 993, SSL/TLS: True, user: myaddress@gmail.com, password: pwd_of_your_account). Click on Test & confirm and it will be configured.

4. Now go to Configuration > Automation > Scheduled Actions, and edit the Fetchmail service row. Set the attributes Interval Number to 1 and Interval Unit to Minutes, to check if there are incoming mails each minute (this way you will see if it works faster).

This answer was copied from here :

https://www.odoo.com/forum/help-1/question/cant-get-the-incoming-emails-into-my-inbox-8464