Configuring Mozilla Thunderbird for Neptune.net Email

Here are step-by-step instructions for configuring Mozilla Thunderbird
for use with Neptune.net mail servers using the IMAP protocol:

  1. Fill in your name, email address, and password at the Mail Account Setup screen, check the “Remember password” field (if it is not checked already), an click the Continue button:

  2. Click the “Manual config” button, either before:

    or after:

    Thunderbird detects the automatic settings.

  3. If you are using the IMAP protocol for reading email, configure IMAP as the incoming protocol, mail1.neptune.net as the incoming server hostname, port 143 as the incoming port, mail2.neptune.net as the outgoing server hostname, and port 587 as the outgoing port. If your user name is different from the first part of your email address, configure that in the Username fields for both incoming and outgoing mail. Then click the “Advanced config “button:

  4. In the Account Settings screen, click on the Server Settings tab, then click the Advanced button:

  5. In the Advanced Account Settings screen, type “mail” (without the quotes) in the “IMAP server directory” field, uncheck the “Server supports folders that contain sub-folders and messages” field, then click the OK button:

  6. Back at the Account Settings screen, click the OK button:

  7. The first time you connect to the server to receive messages you will see an Add Security Exception screen like this:

    Make sure the “Permanently store this exception” field is checked, then click Confirm Security Exception. Similarly, the first time you send a message, you will see another of these screens that notes the location as mail2.neptune.net:587 instead of mail1.neptune.net:143, and you’ll need to take the same action.

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