How much space do I get for each Comcast E-mail account?

You have up to 250MB per account. When your mailbox hits 250MB in size, you will not be able to receive any new e-mail until you delete some of your messages, or download them to your computer without leaving a copy on the server. The mail system will continue to attempt to deliver your incoming e-mail for up to 72 hours from the time the first message over quota was received. If after 72 hours your mailbox is still over quota, any pending and all new incoming e-mail to you will be rejected. The e-mail will be returned to the sender as undeliverable.