Standard Salesforce users can got to Setup > My Email Setting (or https://cs14.salesforce.com/p/email/UserEmailPrefEdit) to get this page:
is a comparable setting also available for Partner Community users? The are not allowed to visit the URL mentioned above. Also I did not find any other place to tweak it?
At My Settings > Email Settings a got some stuff but no place where I can change the Email Name and Signature. Is that missing for Partner Users?
Extra question: for Standard Users where in the database (on which object) these settings will be saved? What are their API names? I was not able to locate the Email Name and Signature on the user record. Should I look anywhere else?
According to the Salesforce Communities Implementation guide, users can edit their email preferences in:
Your Name > Edit Contact Info, then click Contact
Reason you can’t see the option to set these prefs might be that the field is restricted from viewing through the API.