With that system you can then offer something like MailChimp, Campaign Monitor etc. to your customers, instead of manually creating and managing the accounts. Would be excellent.

i have IEM installed with unlimited license, now i need a system, where people comes to the link, select out of no. of plans, and create the account make the payment and the account it automatically created in the iem, with the specified mails or duration. any ideas.

One major issue with web based email clients is you cannot control when it receives email, it is instant. As I need my email open all the time to reference information for my work, when new mail arrives I see it instantly and it distracts me. So the above link is a way to configure GMail so you do not see email coming in instantly, then you can check it as and when you need to.

I also have a Label called To process which is my collection in GTD terms, and allows me to have Inbox Zero. Then each day I go through my To Process inbox and either reply, delete, archive, do it (if quick) or create a task from it.

My task manager of choice is ToDoist because it allows a quick task to be created from a Gmail email with a link to that email.