Runbox SMTP Settings
You must first configure an email client setup for SMTP (Simple Mail Transfer Protocol) to send outgoing messages via the Runbox servers.
Below are the SMTP settings:
| Option | Description |
|---|---|
| SMTP Host: | mail.runbox.com |
| SMTP Port: | 465 TLS/SSL or 587 STARTTLS |
| SMTP Username: | username@runbox.com or just username |
| SMTP Password: | Your email account password |
Runbox Mail Settings For Receiving Emails
IMAP synchronizes all emails on the server with your client, which means that you can read all your messages on many different devices, whereas POP allows you to download your emails without storing them on the Runbox servers.
Below are the POP and IMAP settings, respectively:
Runbox Email POP Settings
| Option | Description |
|---|---|
| POP3 Host: | mail.runbox.com |
| POP3 Port: | 995 |
| Requires SSL: | Yes |
| POP3 Username: | username@runbox.com or just username |
| POP3 Password: | Your email account password |
Runbox Email IMAP Settings
| Option | Description |
|---|---|
| IMAP Host: | mail.runbox.com |
| IMAP Port: | 993 |
| Requires SSL: | Yes |
| IMAP Username: | username@runbox.com or just username |
| IMAP Password: | Your email account password |
Runbox: Eco-Friendly Email, Cleaned Automatically
Runbox is a privacy-focused, eco-conscious email service—but it doesn’t include built-in inbox automation. Clean Email steps in with Auto Clean, helping you automatically archive or delete emails based on sender, age, or keywords. Perfect for those who want minimal clutter with minimal effort.
Use Smart Folders to group and clean emails by type—like social updates or invoices—so your inbox stays organized and efficient.
Pair that with Unsubscriber to clean out unwanted lists, even ones without proper opt-out links.
Runbox users who prioritize privacy will love that Clean Email never reads your content, doesn’t sell data, and works entirely at the account level.
If you want to pair eco-conscious communication with efficient digital habits, Clean Email gives you the tools to save time, stay private, and feel in control of your inbox again.
Useful Information to Remember
Aside from the email settings, here is another point to consider about using usernames.
Your username and password are required to access the email servers, for starters.
When logged in to your Runbox webmail, your username gets shown above your email list at the upper right. Your username also appears on the account page and the folder list.
Remember, you cannot use the alias addresses to log in.
Notably, other Runbox domains include @runbox.no, rbx.run, rbx.email, offshore.rocks, and mailhouse.biz. Moreover, under Account → Aliases, you can find a complete list of alternative synonym domains for more options.
Your username may not have changed if you added your domain after receiving a @runbox address, even if you use your domain to send emails. To be doubly sure, check your username in the Runbox webmail.
💡 Tip: Port 465 may be more secure than port 587. In other circumstances, though, port 587 may be more compatible with more mail programs.
Looking for Seznam settings or Rediff settings? Our Blog's Email Settings category contains specs for all major mail service providers.
IMAP or POP3: What is the Difference?
When configuring a mailbox in an email client, you must determine whether you want to use POP3 or IMAP as the delivery method.
Both platforms can connect to a mail server so that you may read your emails through a mail client such as Outlook or Thunderbird. However, there are certain distinctions between them.
To begin, IMAP stands for Internet Message Access Protocol. Essentially, using IMAP, the message does not stay on the local device, such as a computer, but instead remains on the server itself.
POP3, on the other hand, is an abbreviation for Post Office Protocol. POP3 mail will connect to the server and attempt to keep the message on a local device such as a computer or mobile.
In the end, IMAP is preferable if you intend to access your mailbox from a variety of devices, including a work computer and a smartphone; POP3 is more efficient if you only have one device but have a large number of emails.
However, for most individuals, IMAP remains the protocol of choice.
Please let us know, and we’ll fix them immediately.
Runbox Email Settings - FAQs:
Why am I not getting my emails in Runbox?
You may have incorrect IMAP settings or your inbox is full. Check server details and try Clean Email to remove clutter and free up space.
Why are my Runbox emails not coming through?
Runbox messages may be blocked or sorted incorrectly. Clean Email can help filter and surface important emails.
What is the Runbox SMTP server address?
It’s typically smtp.runbox.com. You can find full SMTP details in Runbox support.
Runbox not sending emails—how can I fix this?
Double-check SMTP authentication and port numbers. Use Clean Email to check if emails are delayed or stuck.
What is the Runbox incoming mail server?
The IMAP server is usually imap.runbox.com. Make sure you're using the correct port and encryption.
What are the IMAP settings for Runbox?
IMAP Host: imap.runbox.com, Port: 993 with SSL. Confirm login credentials.
Where can I find Runbox mail settings?
You can access them from Runbox's settings dashboard or support page.
What is the Runbox POP server?
POP3 Host: pop.runbox.com, typically port 995 with SSL.
Cannot send message using the server Runbox—what should I check?
Verify SMTP details and try sending from Clean Email to isolate the issue.
Is Runbox email IMAP or POP3?
Runbox supports both. IMAP is preferred for syncing across devices.
