Sustainable, private, and secure email
Better for the planet, better for everyone
A safe harbor in Norway
Runbox email servers run on 100% renewable energy and are based in Norway. Every email you send reduces your carbon footprint — carbon-negative, zero compromise.
Our servers are hosted in a maximum security data center in Oslo, Norway where your communications are protected by strict privacy regulations, ensuring your data stays safe and confidential.
“Security, privacy, Norway-based servers, and the fact that the servers are run by 100% renewable energy. An example to the rest on how things should be done!”
— J.C.T., Catalonia, Spain
Powered by nature
All our email servers run on 100% renewable energy, ensuring that every email you send is powered by clean, sustainable sources.
By choosing Runbox, you’re actively reducing your carbon footprint with every message.
From energy-efficient data centers to responsible resource management, we prioritize sustainability at every level. Your inbox isn’t just secure—it’s part of a greener future.
Privacy you can trust
All your data is safely stored on our email servers in a maximum security facility in Oslo, Norway. Your information remains confidential and secure at all times.
Your personal data is protected by strict Norwegian and European data protection regulations, giving you complete control over your personal information.
Your data is safe in Europe
Norway, as part of the European Economic Area (EEA), complies with EU regulations like GDPR, ensuring strong data privacy, consumer protection, and legal safeguards.
No trackers or harmful attachments
Our powerful virus filter detects and blocks potentially harmful attachments or links in emails, safeguarding your device from malware and other security threats.
Spam filtering helps protect your inbox by automatically identifying and blocking unwanted emails, ensuring you only receive messages that matter.
Manual email filters allow you to customize sorting of incoming mail to different folders, forward to other addresses, or block certain senders by an unlimited set of criteria.
You are in control
With Runbox you get a premium email service where you are in control of your data.
Your Inbox, your rules
Runbox will never scan your emails or track your usage. We never share any of your personal information or sell your data for profit. We use no tracking cookies. Only you can access your data.
Unlike ad-supported email providers, Runbox is ad-free and funded entirely by subscriptions — meaning our only obligation is to you, not to advertisers.
All you need to manage your email
Contacts
Keep your contacts organized and easily accessible with our integrated address book. Our CardDAV-supported system lets you sync contacts across all your devices, ensuring you always have the latest information.
Whether you’re adding new contacts, importing from another service, or organizing groups, our address book makes it simple to stay connected.
Secure File Storage
With FTP support, you can upload, download, and organize files directly from your preferred file manager, knowing your data stays protected and accessible anywhere.
Calendar
Whether you’re scheduling meetings, setting reminders, or sharing events with colleagues, our calendar integrates smoothly, offering recurring events, time zones, and easy sharing.
Custom Configurations
Set up your email client exactly how you like it, with full control over your workflow and integration with scripts, automation tools, and other custom setups.
Security you can rely on
Secure Connections
Access your email via encrypted connections (SSL), ensuring that your information is secure.
Full Disk Encryption
Your email and files are encrypted at rest for added protection of the physical storage.
IP-Based Control
Restrict account access to specific IP addresses for added control and security.
Strong encryption
Perfect Forward Secrecy SSL/TLS encryption protects your email during transmission.
Two-Factor Auth
Enhance your account security with Two-Factor Authentication, providing an extra security layer.
Your address forever
We never recycle email addresses – once an address is yours, it’s yours for life.
Identity management
Plus addressing allows for easy tracking and management. Customize unlimited temporary email addresses to better organize your inbox.
Simplify your email management by consolidating all your email accounts within Runbox. Manage everything in one place.
Choose from a wide range of Runbox domain names to craft a personalized, professional, or location-based email address that’s uniquely yours.
Runbox offers integrated domain registration and hosting, letting you register a new domain or transfer an existing one. Use it for email hosting or web hosting from within your Runbox account.
Custom email, web, and domain hosting
Your Runbox account includes email hosting capabilities, enabling you to set up email accounts using a domain you own, giving you full control, enhanced security, and seamless scalability — without the complexity or cost of managing your own servers.
Easy to move in
Switching to Runbox is simple — whether you’re moving from another provider or setting up a new account, our step-by-step migration guides make the process smooth and stress-free.
Just set up your Runbox account, let us know you’re ready to move, and our team can assist you with migrating your data. From technical setup to troubleshooting, we ensure your transition is seamless — so you can focus on what matters most.
Your email address, forever
At Runbox, we have always believed that your email address is more than just a way to send and receive messages—it’s a part of your identity. That’s why we never recycle email addresses.
Once you create an account with us, your email address is yours to keep, even if you decide to cancel your subscription. We understand the importance of continuity, trust, and the personal and professional connections tied to your address.
With Runbox, you can rest assured that your email address remains yours forever — 26 years and counting.
Support
Our support team is always available to assist with any issues you may have, from migrating from other services to account specific issues.
Help Center
Our Help Center offers detailed guidance to help you make the most of our service. Explore answers to common questions and how-to articles.
Community
Whether you’re looking for tips on email management, or have questions about features, our community forum is the place to connect and share ideas.
Frequently Asked Questions
Can I use Runbox with my existing email client?
Runbox fully supports IMAP, POP, and SMTP, meaning it works seamlessly with any standard email client or app, including Thunderbird, Apple Mail, Linux/Mutt clients, and mobile apps on iOS and Android. All connections use SSL encryption to keep your email secure in transit. You can find our server settings and port details in the Email Program Server Settings guide.
Does Runbox work on mobile?
You can access Runbox on any mobile device using any email app that supports IMAP — including the native Mail app on iPhone and iPad, K-9 Mail on Android, and eM Client on both platforms. Our webmail also works in mobile browsers. Setup guides for popular mobile clients are available in our Help Centre.
Runbox also has a Progressive Web App (PWA), giving you a fast, app-like experience through your phone’s browser with no app store required. The PWA works on iPhone, Android, and privacy-focused devices like Fairphone and GrapheneOS, by saving the login page to your home screen. Read more about the Runbox mobile app.
Can I use my own domain name with Runbox?
You can host your own domain with Runbox by adding it to your account and updating your domain’s MX records to point to Runbox. Once set up, you can create email addresses and unlimited aliases on your domain. The number of domains you can add depends on your plan — from 1 domain on Micro up to 100 on Max250. Find out more about custom domains.
Does Runbox have a calendar and contacts?
Runbox includes an integrated calendar and address book alongside your email. The calendar supports recurring events, time zone settings, and syncs across all your devices via CalDAV. Contacts sync via CardDAV, keeping your address book consistent across desktop and mobile clients. Both work with standard apps including Apple Calendar, Apple Contacts, Thunderbird, and most Android and iOS calendar and contacts apps. Learn more about setting up calendar and contacts.
What is the maximum email attachment size?
Runbox supports a maximum message size of 100 MB, which applies across all plans. This covers the total size of the email including any attachments.
Is my inbox protected from spam and viruses?
Runbox automatically scans all incoming email for viruses and blocks harmful attachments and links before they reach your inbox. Spam filtering identifies and quarantines unwanted email, so only messages that matter get through.
You can also set up unlimited custom filters to automatically sort, forward, or block incoming mail based on your own criteria — giving you full control over how your inbox is organised. Runbox never scans your email for advertising or data mining purposes.
What are email aliases and plus addressing?
Email aliases are additional addresses that all deliver to your main inbox — useful for organizing incoming mail, protecting your primary address from spam, or presenting a different address for different purposes (e.g., shopping@yourname.com vs. work@yourname.com) without managing separate accounts. Every Runbox account includes 100 aliases on Runbox domains, and unlimited aliases if you use your own custom domain.
Plus addressing lets you create address variations on the fly by adding a “+” and any word after your username — like yourname+newsletter@runbox.com — without setting anything up in advance. Mail still arrives in your main inbox, but the “+word” makes it easy to filter, sort, or immediately spot where an address may have been shared or leaked.
How do I migrate from another provider?
Moving to Runbox involves two steps: setting up your account and importing your existing email. If using a custom domain, you’ll update DNS records to point to Runbox. Then use the IMAP Import tool to bring existing messages across without deleting anything from the old account. Runbox supports migration from all major providers including Gmail, Outlook, Yahoo, iCloud, and GMX. Runbox Support can also complete the migration on your behalf for an additional fee.