1.From Mozilla Thunderbird's Tools menu, select Account Settings...

2. When the Account Settings window appears, click the Add Account... button to continue.

3. Click on Email account button and click the Next > button


4. Fill in your personal information as shown below. Substitute yourdomain for 550access.com. Click on the Next > button

5. Fill in the information as shown below.
Incoming: pop.550access.com
Outgoing: smtp.550access.com



6. Enter your email address as shown below. Substitute yourdomain.com with 550access.com   Click the Next  button.

7. Enter a name for the account. You can specify any desirable name for the account such as “my email account” (anything you want) . Click the Next > button.



8. Click the Finish button to complete the setup of your new e-mail account.