How to Configure My Email Client with Rackspace Mailbox

Learn how to Configure My Email Client with Rackspace Mailbox using IMAP/SMTP. Set up on Gmail, Outlook, iOS Mail, Thunderbird, & more.

Want to access your Rackspace email through Gmail, Outlook, Thunderbird, or iOS Mail?

This guide walks you through the complete setup process using secure IMAP and SMTP settings.

Whether you're setting up for the first time or troubleshooting connection issues, you’ll learn how to easily configure your email client, send and receive messages, and ensure proper syncing with your Rackspace mailbox.

TL;DR? Read the summary of this article:

1. Find your IMAP/SMTP settings – Use these standard settings for any email client:

• Incoming (IMAP): secure.emailsrvr.com, port 993, SSL/TLS
• Outgoing (SMTP): secure.emailsrvr.com, port 465, SSL/TLS

2. Configure your email client – Enter your name, email address, password, and the server details in apps like Outlook, Thunderbird, Windows Mail, or iOS Mail.
3. Enable SMTP authentication – Make sure “My outgoing server requires authentication” is selected and uses the same login details as your incoming server.
4. Test and sync – Send a test email to confirm everything works, and allow time for your inbox to sync all messages.

Table of Contents:

• How to Configure My Email Client with Rackspace Mailbox?
• Default IMAP Settings
• Gmail
• Windows Mail
• Microsoft Outlook
• Mozilla Thunderbird
• iOS Mail
• Need Help?

How to Configure My Email Client with Rackspace Mailbox?

You can access your Rackspace mailbox through any email client of your choice, such as Gmail, Outlook, Thunderbird, or iOS Mail. While using an email client is optional—you can always log in via Rackspace Webmail—it offers more convenience for day-to-day communication.

This guide uses the IMAP protocol to configure your mailbox, allowing you to sync messages across multiple devices while keeping a copy stored securely on Rackspace servers.

Default IMAP Settings

Your Name: Your Name or Business Name
Login Name: Your Rackspace Mailbox Email Address
Password: Your Rackspace Mailbox Password
Account Type: IMAP
Incoming Mail Server: secure.emailsrvr.com
Outgoing Mail Server: secure.emailsrvr.com
Incoming Mail Server (IMAP) TCP Port: 993 (SSL)
Outgoing Mail Server (SMTP) TCP Port: 465 (SSL)

Gmail

1. Visit Gmail and log in to your Google account. Next, click Settings.

2. Next, click See All Settings.

3. Click Add Another Email Address. This will open a pop-up window.

4. Here you’ll need to enter the following information:

Name: Your Name or Business Name
Email Address: Your Rackspace Mailbox Email Address

Treat as an Alias: Uncheck it (For details, visit this article)

Click Next Step.

5. Next, enter the following information:

SMTP Server: secure.emailsrvr.com

Port: 465
Username: Your Rackspace Mailbox Email Address

Password: Your Rackspace Mailbox Password

Connection: Select the Secured connection, using SSL (recommended)

Next, click Add Account.

6. Gmail will now send a verification code to your Rackspace email account to verify the ownership; therefore, check your email using Rackspace webmail and enter the code. Finally, click Verify.

7. That's it! Your mailbox is successfully added, which means you can send emails using your Rackspace email from your Gmail client. Next, we need to ensure your Rackspace emails are also received by Gmail.

If you plan to use your Rackspace email address most regularly instead of your Gmail address, you can make it the default sending address by clicking Make Default which is optional.

8. Next, click Add an Email Account. This will open a new pop-up window.

9. Here, enter your Rackspace Mailbox Email Address and click Next.

10. Proceed with the default option selected, e.g., Import emails from my other account (POP3). Click Next.

11. Next, enter the following information:

Username: Your Rackspace Mailbox Email Address

Password: Your Rackspace Mailbox Password

POP Server: secure.emailsrvr.com

Port: 995

Leave a Copy of Retrieved Messages on the Server: Check it if you would like to keep a copy of each message Gmail retrieves from your Rackspace Webmail. All the emails are then available in both places. This way, you can access mail in your other accounts and Gmail. (For details, visit this article).

Always Use a Secure Connection (SSL) When Retrieving Mail: Check it. (For details, visit this article).

Label Incoming Messages: It is optional if you want to label your incoming messages.

Archive Incoming Messages: It is optional if you want to archive your incoming messages instead of going to the inbox.

Finally, click Add Account.

Gmail will now start fetching emails from your Rackspace mailbox periodically so you can view and manage emails from the Gmail client.

Congratulations! You have successfully configured your Rackspace mailbox with Gmail. The email fetching and syncing process between Gmail and your Rackspace mailbox may take some time based on the amount of email data to be fetched.

Windows Mail

1. Open Mail from the Windows Start Menu.

2. If this is the first time you’ve opened the Mail app, you’ll see a Welcome page. Tap Add Account to get started.

If you’ve used the Mail app before, visit Settings > Manage Accounts > Add Account.

3. Choose Other Account.

4. Enter your Rackspace Mailbox Email Address.
5. Next, enter the Name you wish to use while sending messages.
6. Enter your Rackspace Mailbox Password.

That’s it! You have successfully configured your Rackspace mailbox with the Windows Mail client. The syncing process between Windows Mail and your Rackspace mailbox may take some time based on the amount of email data to be fetched.

Microsoft Outlook

1. Launch Microsoft Outlook. In this demonstration, we are using Microsoft Outlook 2016.

2. If this is the first time you’ve opened Outlook, you’ll see a Welcome page. Click Next to get started.

If you’ve used Outlook before, visit File > Add Account.

3. Select Yes when prompted about setting up Outlook to connect to an email account and click Next.

4. Select Manual Setup or Additional Server Types and hit Next.

5. Select POP or IMAP and click Next.

6. In the Add Account window, enter the following information:

User Information

Your Name: Your Name or Business Name
Email Address: Your Rackspace Mailbox Email Address
Account Type: IMAP
Incoming Mail Server: secure.emailsrvr.com
Outgoing Mail Server: secure.emailsrvr.com

Logon Information

User Name: Your Rackspace Mailbox Email Address
Password: Your Rackspace Mailbox Password

7. Once done, click More Settings.

8. Switch to Outgoing Server, check My Outgoing Server (SMTP) Requires Authentication, and select Use Same Settings as my Incoming Mail Server.

9. Change Use the Following Type of Encrypted Connection to SSL for both the Incoming and Outgoing Servers. Next, change the Incoming Server (IMAP) port to 993, the Outgoing Server (SMTP) port to 465, and click OK.

10. Click Next.

11. Outlook will now attempt a small test by sending a text message using our configurations. If everything were configured correctly, the message would send out successfully. Click Close.

12. Finally, click Finish to close the setup wizard.

Congratulations! You have successfully configured your Rackspace mailbox with Microsoft Outlook. The syncing process between Outlook and your Rackspace mailbox may take some time based on the amount of email data to be fetched.

Mozilla Thunderbird

1. Start by launching Thunderbird. If this is the first time you’ve opened the Thunderbird, you’ll see a welcome page prompting you to set up an existing email account.

Your Name: Your Name or Business Name
Email Address: Your Rackspace Mailbox Email Address
Password: Your Rackspace Mailbox Password

Once done, click Manual Config.

If you’ve used the Thunderbird before, visit Menu > New > Existing Mail Account.

2. In the current window, enter the following information to match the image below

Incoming

Email Protocol: IMAP
Server hostname: secure.emailsrvr.com
Port: 993
SSL: SSL/TLS
Authentication: Autodetect

Outgoing

Email Protocol: SMTP
Server hostname: secure.emailsrvr.com
Port: 465
SSL: SSL/TLS
Authentication: Autodetect

Once done, click Re-test.

3. Once testing is successful, you can click Done to finish the setup.

That’s it! You have now set up Mozilla Thunderbird to work with your Rackspace mailbox. The syncing process between Thunderbird and your Rackspace mailbox may take some time based on the amount of email data to be fetched.

iOS Mail

1. Visit Settings and tap Passwords and Accounts. In this example, we are using the Mail app for iOS 13.

2. Next, tap Add Account.

3. Select Other at the bottom.

4. Tap Add Mail Account.

5. In the next screen, enter the following information:

Name: Your Name or Business Name
Email Address: Your Rackspace Mailbox Email Address
Password: Your Rackspace Mailbox Password
Description: Anything you’d like!

Once done, click Next.

6. Next, enter the following information; the previously entered information should already be prefilled from the last section.

Email Protocol: IMAP

Incoming Mail Server

Host Name: secure.emailsrvr.com
Username: Your Rackspace Mailbox Email Address
Password: Your Rackspace Mailbox Password

Outgoing Mail Server

Host Name: secure.emailsrvr.com
Username: Your Rackspace Mailbox Email Address
Password: Your Rackspace Mailbox Password

Once done, tap Next.

7. On the next screen, you must ensure that the Mail feature is enabled and then hit Save to save your configurations.

Congratulations! You have successfully configured your Rackspace mailbox with the Mail application. The syncing process between the Mail client and your Rackspace mailbox may take some time based on the amount of email data to be fetched.

Ryan

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