Your email (client). Your rules. Your privacy.
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YouniqMail isn't for everyone — it's for anyone who finally wants to adapt their inbox to their work style and workflow, without compromising your privacy
No servers in between
Many mail apps route your messages through their own servers. YouniqMail connects straight from your device to your email provider and stores everything locally.
Your data is not the product
A simple freemium model: you only pay if you need the premium features. Your emails never reach YouniqMail. No sharing, no selling.
Highly customizable
Tags, flags, notes, rules, keyboard shortcuts and a dashboard you arrange yourself. YouniqMail adapts to your workflow, not the other way around.
A few things you'll notice first
Your inbox at a glance
18+ widgets, 4 presets and a drag-and-drop layout you arrange yourself.
Rules that sort mail for you
Conditions and actions for new emails, plus webhooks and integrations.
OpenPGP & S/MIME
Encrypt and sign emails right on your device, with keys or X.509 certificates.
Phishing protection
Spoofed senders, lookalike domains and risky links get a clear warning.
Recipient Intelligence
Domain typos, blocked contacts and dead addresses are flagged before you hit Send.
Tags & colored flags
Tags with your own names and colors, and flags compatible with Apple Mail.
Works with your email provider
Any account with IMAP and SMTP works, including your own domain and self-hosted servers. For 29 providers, such as Gmail, Outlook.com, iCloud, GMX, WEB.DE, Proton Mail and Posteo, YouniqMail fills in the server settings for you.
Everything else you'd expect
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Frequently asked
questions
What about the development of YouniqMail? Will there be a (public) alpha and/or beta phase?
I always want to develop very closely with the community/users, so I’m looking forward to a lively exchange with you. The alpha phase started on 14th December 2025 and is in beta phase since 09th March 2026 where everyone is invited to test the email client and give feedback. Of course the alpha and beta phase will be free for everyone.
Follow the development updates on the feedback platform (https://feedback.youniqmail.com).
How much will YouniqMail cost?
The price for the Premium subscription will be announced soon. Of course there will also be a Beta / Early Bird discount.
Of course, the beta and alpha phase is free of charge. Your early stage feedback is worth more than money.
Which mail providers does YouniqMail support?
YouniqMail works with any email account that offers IMAP and SMTP. That covers almost every provider, your own domain and self-hosted mail servers. You can add as many accounts as you like, also on the free plan.
For 29 providers, the setup wizard already knows the server settings. You pick your provider, sign in, and YouniqMail fills in the rest:
Major providers: Gmail, Outlook.com, Microsoft 365, Microsoft Exchange, iCloud, Yahoo Mail, GMX, WEB.DE, Bluewin (Swisscom)
Privacy-focused and independent: Proton Mail, Posteo, mailbox.org, Fastmail, Zoho Mail, Mailfence, Mailo, StartMail, Runbox, Disroot, Vivaldi Mail
Hosting and domain providers: GoDaddy, IONOS, OVHcloud, Hostinger, Strato, SiteGround, Hetzner, All-Inkl, Migadu
Is your provider not listed? Choose Setup manually (custom IMAP / SMTP) and enter the server details from your provider’s help pages.
Will YouniqMail support POP3?
No, POP3 Support is not planned. But if there is a high demand for it, it will be considered for the roadmap.
On which platforms does the email client run?
YouniqMail is currently being developed for macOS, Windows and Linux.
Will there be a mobile app?
At the moment, only a desktop app (for Mac, Windows and Linux) is in development. If the response is positive enough, I will endeavor to develop a mobile app, but this will not be available at launch.
Will there be offline support?
It’s already there. YouniqMail stores your emails in a local database on your computer. Once the first sync has finished, most of your daily work no longer needs a connection:
- Read and search every synced email. Search runs locally, so it is just as fast offline.
- Organize your mail: mark it as read or unread, flag, tag, snooze, move, archive, delete or move it to spam.
- Write new emails and replies, and save drafts. The send button changes to Queue for sending, and the email waits in the outbox.
The header shows when you’re offline. Outbox / Pending Actions in the sidebar lists everything that is still waiting for the server.
When you’re back online, YouniqMail catches up by itself. It first applies your pending changes, then sends the emails in the outbox, then fetches new mail. Anything still waiting is kept when you close the app. If an email was moved or deleted on the server in the meantime, for example from your phone, YouniqMail drops the outdated change. A change that keeps failing after several attempts stays in the list with its error message, and you can retry or discard it.
What still needs a connection: new mail, attachments you have never opened, and connected services such as Trello or Notion. YouniqMail downloads attachments the first time you open them and keeps up to about 500 MB of them. Emails in local folders keep all their attachments on your computer.
Hi 👋, I’m Sven and I started developing YouniqMail at the beginning of 2025.
In my search for an e-mail client that is data protection compliant and does not send all mails or other data via the developer’s servers, I hardly found any mail clients that came into question. Even when I did find one that could be considered, it forced you into certain ways of working and/or was not customizable enough.
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