Roundcube IMAP Settings for Outlook & Gmail Apps

  Mohit Kumar Jha
Written By Mohit Kumar Jha
Anuraag Singh
Approved By Anuraag Singh
Modified On September 24th, 2025
Reading Time 3 Min Read

If you’re setting up Roundcube to access your email through IMAP, using the correct server settings is essential for a smooth connection. In this guide, I’ll quickly cover the Roundcube IMAP settings so that you can set them up in different email clients like Outlook, Gmail, etc. Let’s see how.

Table of Contents

An Overview of Roundcube IMAP Server Settings

Roundcube Webmail IMAP server settings are the instructions that your email client requires to set up a connection to the Roundcube server. These are the strict rules that identify where to find emails and how to communicate with the server. There is an incoming server that specifies where your emails come from. On the other hand, an Outgoing mail server is used to send the emails.

Roundcube IMAP Settings for Outlook, Gmail, Thunderbird, and Other Email Clients

Roundcube uses an IMAP server so that users can set up accounts on other email clients as well. Let’s dive deep into the settings of the IMAP server that plays a vital role while adding a Roundcube account in any other application, including Gmail, Apple Mail, Outlook, and so on.

Email Settings Port Details
Roundcube IMAP Incoming mail server:

imap.mail.com (where the domain is the mail)

993 requires SSL

143, non-secure

Roundcube POP3 Incoming mail server:

pop.mail.com

995 requires SSL

110, non-secure

Roundcube SMTP Outgoing mail server:

smtp.mail.com

465 requires SSL

587, non-secure

Error-Free Method to Backup Roundcube Emails Locally

Once your Roundcube account is configured, it’s wise to create a local backup of your emails to avoid data loss or a data breach. For the same, I suggest opting for the expert’s recommended IMAP Backup Tool to save all of your emails from Roundcube locally. This tool offers several export options to download your Roundcube emails, such as PST, MBOX, EML, MSG, & PDF.

Download Now Purchase Now

You can also convert Roundcube to PDF files. Additionally, using the Date filter option, you can back up only the relevant emails. Plus, it allows you to delete the emails from the server once downloaded. All the folder hierarchy remains the same as the original.

One can use the different naming conventions of the tool to save the resulting file, such as Subject+Date and From+Subject+Date. So, download the tool now for free and back up your 100 Roundcube emails simultaneously using its demo version.

Troubleshooting Common Roundcube IMAP Settings Problems

Let’s look at some common Roundcube IMAP server issues:

  • Connection Errors: If you are unable to connect, check server addresses and port numbers. Also, ensure your Internet is providing sufficient bandwidth.
  • Failures of Authentication with Roundcube IMAP: If you are continuously getting the authentication failure issue, then the username and password might be the reason. Check them and also make sure CapsLock is off.
  • Email Sending/Receiving Issues: If you are unable to send or receive emails, the problem is with the SMTP settings. Check them again.

Author’s Verdict

Roundcube IMAP settings look complex. Therefore, in this article, we have discussed what the IMAP server settings, including incoming and outgoing mail servers required to set it up on another email client, such as Gmail, Outlook, Thunderbird, etc. In addition, we have also focused on how to troubleshoot the common issues that persist because of the misconfiguration of Roundcube IMAP Server settings.

  author

By Mohit Kumar Jha

Mohit is a Microsoft Certified expert for all things Microsoft. He brings a unique perspective gained from nearly a decade of active participation in various IT forums, blogs, and social media. Known in admin circles as the go-to guru for solving user queries in the domain of email and cloud migration, data backup, and digital forensics. The secret to his core expertise lies in solving problems practically. Through this hands-on experience, he has acquired knowledge in diverse domains like Microsoft 365 Cloud, On-Premise Exchange Server, AD, and Entra ID.