Our email server will try to send the email for a specified amount of time. If it is ultimately unsuccessful it will return the email to the sender. Email addresses can be case sensitive so make sure you are using the proper case in addressing your emails. My email takes forever to download If you have a slow modem it will take some time to download your email. If someone sends you an excessivley large attachment it will take a long time to download to your computer.
Email programs can sometimes choke on large attachments as well.
It is not recommended that you send attachments over one meg through email. You should have your email program set up to check for new messages and then delete them off the server. If you have it set to leave them on the server, over time they will build up and make you mailbox excessivley large causing delays in mail downloading.