Email · 9 services
Email apps, all in one window
Email never really went away, it just multiplied. A personal Gmail, a work address on Office 365, an iCloud Mail account you keep for family, maybe a privacy-first inbox on Proton Mail or mailbox.org, and for the self-hosters a Roundcube or RainLoop install on their own server. Open each one in a browser and your day becomes a hunt through tabs and logins, with a quiet inbox in every account you forgot to check. Franz fixes that by running every webmail account side by side in a single desktop app, so the inbox you need is always one click away in the sidebar instead of buried behind everything else you have open.
The services in this category cover the email apps and webmail clients people actually use to get through their day: Gmail, Outlook.com, Office 365 (Outlook on the web), iCloud Mail, FastMail, Proton Mail, mailbox.org, and the self-hosted webmail clients Roundcube and RainLoop. Each one runs as a first-class tab in Franz with its own login session, its own desktop notifications, and its own unread badge, including separate sessions for multiple accounts of the same provider, which the web versions rarely let you do without juggling browser profiles.
People searching for an "email app for desktop" or "webmail as a desktop app" usually want the same three things: every inbox in one window, new-mail notifications they can actually trust, and an app that works the same on macOS, Windows, and Linux. That is exactly what Franz is built for, and people have trusted it to gather their inboxes since 2015, with more than 1,000,000 downloads along the way. You keep using the mail providers you already chose, whether that is a big provider, a privacy-first one, or a webmail client on your own server. The providers stay exactly as they are. Franz just stops your inboxes from sprawling across browser tabs and keeps the unread counts honest, so the message that mattered never goes quiet behind another window. It is free to start, and every inbox can sit in one window from the first launch, set up in minutes. Below you will find the most popular email services we support, the full list, and answers to the questions people ask most before they switch.
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Frequently asked questions
Which email services does Franz support?
Franz supports the major webmail providers and self-hosted clients out of the box, including Gmail, Outlook.com, Office 365 (Outlook on the web), iCloud Mail, FastMail, Proton Mail, and mailbox.org, plus the self-hosted webmail clients Roundcube and RainLoop. Each runs as its own service tab with an independent login, desktop notifications, and its own unread badge. If you run your own mail server with Roundcube or RainLoop, you point Franz at your own server URL during setup.
Can I run multiple email accounts at once?
Yes, and it is one of the main reasons people install Franz. You can add the same provider more than once, one tab per account, and stay signed in to all of them at the same time, without the sign-out-and-back-in dance the web apps force on you. A personal inbox, a work inbox, and a shared mailbox can all sit side by side, each with its own session, its own notifications, and its own unread count.
Can I use my own self-hosted webmail server?
Yes. Roundcube and RainLoop do not live at a single public address, because every install is on its own server, so Franz lets you enter your own server URL when you add the service. Point it at the address where your webmail lives, sign in, and your self-hosted inbox runs as a desktop tab just like any hosted provider, while your mail stays on infrastructure you control.
Does it work on Mac, Windows, and Linux?
Franz is a native desktop app for macOS, Windows, and Linux, and the email services behave the same on all three. You get system notifications, a dock or taskbar badge, and keyboard-friendly switching between inboxes regardless of platform, which is especially useful for iCloud Mail and other providers that lack a proper desktop client outside their own ecosystem.
Is Franz free to use for email?
Yes, you can use Franz for free and add several services to get started. The free plan covers the everyday "all my inboxes in one window" use case. Franz Pro adds extras like more services and additional features, but you do not need a paid plan to bring your email accounts together in one place.