The following instructions are general. Your version of Apple Mail may be slightly different, so keep your mind open to the general principles.
1. Open Mail.
2. Choose Preferences from the Mail menu. If you have not yet set up any accounts, the Mail Setup window appears, and you can skip to Step 7.
3. Click the Accounts icon in the Mail Preferences window.
4. Click Create Account (+).
5. Choose the correct account type from the pop-up menu. Choose "POP" if you want to download mail to one computer (recommended). Choose "IMAP" if you want to check your mail from multiple computers and you want all the computers to show the same mailbox. This option requires more space on your server, because it stores all the messages and attachments on the server. See our FAQ on the differences between IMAP and POP.
6. In the Description field, type any name you would like to use to identify the account. This is the name that will appear in your list of accounts.
7. Complete the rest of the fields.
Incoming Mail Server: mail.yourdomain.com (replace yourdomain.com with your actual domain).
Outgoing Mail Server: We recommend that you use the same mail server for your outgoing mail: mail.yourdomain.com (replace yourdomain.com with your actual domain). You will need to authenticate using your account password. However, some ISPs (Internet Service Providers) do not allow mail to be sent from other mail servers, in which case you will need to use the SMTP server of your ISP.
Ports: We advise that you use the following ports (which should already be default):
Not Using SSL: 110
Using SSL: 995
Not Using SSL: 143
Using SSL: 993
8. If desired, click the Account Options tabs to change the default account behavior. If using POP you should instruct your account to delete messages after they are downloaded.
9. Click OK when you are finished.
10. If you are using IMAP, you will also need to designate the folders that you'd like to use for Sent, Drafts, Trash, and Junk mail. Simply click the folder name that matches the function you want to assign (e.g. “Sent”) so it is highlighted in the list, and then go to Mailbox → Use This Mailbox For → [function name] (e.g. “Sent” again). Your folder will disappear from the list, and reappear as a sub-folder beneath the function you specified, with the same name as the account it’s connected to. So, if your account name is “My IMAP Account”, the “Sent” folder will now be located under “Sent → My IMAP Account” in the Mail sidebar.
NOTE: If it does not work, then you can be 99.99% sure that you did something wrong. Try accessing your Webmail, to make sure that you have the right username/password. If that works, you can be 100% sure your local mail program account settings are wrong, e.g. you entered an incorrect username/password or mail server. Edit your settings and triple check everything. See our other related troubleshooting FAQs if you need more help, or coordinate with your local tech support. Unfortunately, we can only verify that the server is working properly, we cannot support your local mail program setup. That is your responsibility, trying to help over the phone will only end in frustration for both of us. If it's not working, we are going to tell you that you entered something incorrectly, because that is always the problem. So you need to get someone more technical than yourself to help. Mail really is quite simple, there are only a couple settings, but you have to have them all perfectly correct.