1. Open Outlook and click on Tools and then Account Settings.
2. Select your Tranquility account and then click Change.
3. Set your Incoming mail server to pop.gmail.com and your Outgoing mail server (SMTP) to smtp.tranquility.net. Change your User Name to your_username@tnetmail.net, check Remember Password, then click More Settings.
4. Click the Outgoing Server tab and check My outgoing server (SMTP) requires authentication. Then click on the Advanced tab. Click Log on using and type in your username and password.
5. Check the following SSL options as shown below, verify that you are using the right ports and click OK.
6. Finally click Next, then Finish.