IMAP setup NOT working for my Domain email

IMAP setup NOT working for my Domain email

Hi

I have a couple of issues with CRM Email setup.

--- 1. PROBLEM NOT SOLVED ---
I cannot setup IMAP for my Domain email address, it gives me an error. but all the info is correct. Its a 1and1.com domain btw.

---- 2. QUESTION  (started another topic) ---
My domain address is setup to forward all emails to my gmail account, and I have setup my Gmail account to allow me to Send Mail As my Domain email, So I basically manage ALL my email from Gmail.  How do you suggest me to setup Zoho in order to keep functioning this way?  
Started new Topic for this question : Manage Business Email from Gmail but send from within Zoho CRM ?

---- 3. PROBLEM SOLVED -----
 I had first setup my 2 emails with POP, the forum search got me under the impression that there was no IMAP support, I know NOW that you do support IMAP  So:

Prior switching from POP to IMAP in my Gmail account, many emails had already been imported into my zoho account, over 1 GB shows up under email storage. This was TODAY morning.
 
This afternoon I switched to IMAP for that Gmail account, but all those emails are still taking space from my zoho account. How can I revert that and keep only IMAP settings. meaning, those emails should be only in Gmail servers, not at zoho. EDIT: Nevermind this one... I deleted the email account and created it again as IMAP... not the most practical thing to do but it worked.