Configure Thunderbird for Windows – CenturyLink Office

In this help article you will find step-by-step instructions how to set up your - POP/IMAP mailbox in Mozilla Thunderbird for Windows.

This article contains the following sections:

IMAP configuration instructions
POP configuration instructions

I. IMAP configuration instructions:

1. In Thunderbird, click the Menu button on the top right and select Account Settings.

2. Click the Account Actions button and select Add Mail Account.

3. When you are on the Set Up Your Existing Email Address dialog box, enter Your full name,
Email address and Password. Select the Remember password check box and then click Continue.

4. Thunderbird will try to determine your account settings based on your domain name, trying to determine the email settings. In order to Edit them manually click on Configure Manually button.

5. When you are on the Manual Configuration page, use the following recommended configuration:

Protocol: IMAP
Incoming Server: pop.qwestoffice.net
Outgoing (SMTP) Server: smtp.qwestoffice.net
Authentication Method: Normal Password
Incoming server (IMAP) Port: 993 SSL/TLS or 143 STARTTLS
Outgoing server (SMTP) Port: 465 SSL/TLS or 587 STARTTLS

6. Click Done to save the configuration and then Finish to return to Thunderbird’s main window.

7. To download your existing messages to Thunderbird, click on Get Messages from the top menu.

II. POP configuration instructions:

1. In Thunderbird, click the Menu button on the top right and select Account Settings.

2. Click the Account Actions button and select Add Mail Account.

Note: Email accounts that you have already configured are listed on the left side of the Account Settings page. These email accounts correspond to the top-level folders displayed in the “All Folders list”.

3. When you are on the Mail Account Setup dialog box, enter Your name, Email address and Password. Select the Remember password check box and then click Continue.

4. Thunderbird will try to determine your account settings based on your domain name, trying to determine the email settings. In order to Edit them manually click on Configure Manually button.

5. When you are on the Manual Configuration page, use the following recommended configuration:

Incoming Server settings:	Outgoing Server settings:
Protocol: POP Hostname: pop.qwestoffice.net Port: 995 Connection security: SSL/TLS -----------------or----------------- Port: 110 Connection security: STARTTLS Authentication: Normal Password Username: Your full email address	Protocol: SMTP Hostname: smtp.qwestoffice.net Port: 587 Connection security: STARTTLS Authentication: Normal Password Username: Your full email address

Important Note: If a local firewall or your Internet Service Provider (ISP) blocks port 587, you can use alternative port as follows:
Outgoing server (SMTP) Port: 465, SSL: SSL/TLS

6. Click Done to save the configuration and then Finish to return to Thunderbird’s main window.

7. After you complete the mail account setup, click on the Account Settings (top right) menu.

Make sure that under Server Settings, the Leave messages on server check box is selected.
It is also recommended to deselect the For at most 14 days check box.

Note: The POP accounts have the option to leave messages on the server. By default, this setting is enabled. By disabling this setting Thunderbird will download your Inbox folder emails locally to your computer and then it will delete them on the mail server. Therefore, you won't be able to see your Inbox messages anymore in your webmail.

8. To download your existing messages to Thunderbird, click on Get Messages from the top menu.

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