Leave Me Alone alternatives · Email
Open-source alternatives to Leave Me Alone
Leave Me Alone is not described as open source on its own site. 39 of the 125 other email apps in this directory are open source, according to their own sites.
Leave Me Alone is a paid product with a free trial, starting at $9 per month, or $90 billed yearly. 33 of them are free or have a free plan.
39 tools · Listings checked up to Nov 13, 2026 · Where the facts come from
The 12 closest to Leave Me Alone
- Free trial · from $18/mo
Inbox Zero
Open source AI email assistant for Gmail and Outlook
- Inbox Zero starts at $18 per user / month, billed annually ($20 billed monthly). Leave Me Alone starts at $9 per month, or $90 billed yearly.
- Only Inbox Zero lists macOS, Windows, iOS and Android apps.
- Only Inbox Zero lists a browser extension.
- Inbox Zero is open source and self-hostable, according to its own site.
- Free plan · from $20/mo
Zero Mail
Open-source AI email client that connects your existing inboxes
- Zero Mail starts at $20 per month (billing basis not shown). Leave Me Alone starts at $9 per month, or $90 billed yearly.
- Zero Mail has a free plan. Leave Me Alone does not, though it has a free trial.
- Zero Mail is open source and self-hostable, according to its own site.
- Zero Mail also covers email client.
- Free plan
Wino Mail
Free, open source mail and calendar app for Windows
- Wino Mail has a free plan. Leave Me Alone does not, though it has a free trial.
- Only Wino Mail lists a Windows app.
- Only Leave Me Alone lists a web app.
- Wino Mail is open source, according to its own site.
- Free
Claws Mail
Lightweight GTK email and news client, free under the GPL
- Claws Mail is free. Leave Me Alone starts at $9 per month, or $90 billed yearly.
- Claws Mail has a free plan. Leave Me Alone does not, though it has a free trial.
- Only Claws Mail lists Linux and Windows apps.
- Only Leave Me Alone lists a web app.
- Free
Sylpheed
Lightweight desktop email client built on GTK+
- Sylpheed is free. Leave Me Alone starts at $9 per month, or $90 billed yearly.
- Sylpheed has a free plan. Leave Me Alone does not, though it has a free trial.
- Only Sylpheed lists Windows, macOS and Linux apps.
- Only Leave Me Alone lists a web app.
- Paid
Open-Xchange
OX App Suite email platform sold to providers and governments
- Open-Xchange is open source and self-hostable, according to its own site.
- Open-Xchange also covers calendar and email client.
- Leave Me Alone also covers inbox filtering and workflow automation.
- Free
Cypht
Open-source webmail that combines many accounts in one inbox
- Cypht is free. Leave Me Alone starts at $9 per month, or $90 billed yearly.
- Cypht has a free plan. Leave Me Alone does not, though it has a free trial.
- Cypht is open source and self-hostable, according to its own site.
- Cypht also covers email client.
- Free
hMailServer
Free open-source mail server that runs on Windows
- hMailServer is free. Leave Me Alone starts at $9 per month, or $90 billed yearly.
- hMailServer has a free plan. Leave Me Alone does not, though it has a free trial.
- Only hMailServer lists a Windows app.
- Only Leave Me Alone lists a web app.
- Free plan · from $3.99/mo
Proton Mail
End-to-end encrypted email service based in Switzerland
- Proton Mail starts at $3.99 per month, billed every 12 months ($47.88); $4.99 billed monthly. Leave Me Alone starts at $9 per month, or $90 billed yearly.
- Proton Mail has a free plan. Leave Me Alone does not, though it has a free trial.
- Only Proton Mail lists macOS, Windows, Linux, iOS and Android apps.
- Proton Mail is open source and end-to-end encrypted, according to its own site.
- Free
Thunderbird
Free, open-source email app for Windows, macOS, Linux and Android
- Thunderbird is free. Leave Me Alone starts at $9 per month, or $90 billed yearly.
- Thunderbird has a free plan. Leave Me Alone does not, though it has a free trial.
- Only Thunderbird lists Windows, macOS, Linux and Android apps.
- Only Leave Me Alone lists a web app.
- Free plan · from €3/mo
Tuta Mail
End-to-end encrypted email and calendar from Germany
- Tuta Mail starts at €3 per month, paid yearly (lowest paid personal plan). Leave Me Alone starts at $9 per month, or $90 billed yearly.
- Tuta Mail has a free plan. Leave Me Alone does not, though it has a free trial.
- Only Tuta Mail lists Windows, macOS, Linux, iOS and Android apps.
- Tuta Mail is open source and end-to-end encrypted, according to its own site.
- Free plan · from $8/mo
Mailspring
Open-source desktop email client for Mac, Windows and Linux
- Mailspring starts at $8 per month, or $85 per year (Mailspring Pro). Leave Me Alone starts at $9 per month, or $90 billed yearly.
- Mailspring has a free plan. Leave Me Alone does not, though it has a free trial.
- Only Mailspring lists macOS, Windows and Linux apps.
- Only Leave Me Alone lists a web app.
Common questions
Is there an open-source alternative to Leave Me Alone?
Yes. Inbox Zero, Zero Mail, Wino Mail, Claws Mail, Sylpheed, Open-Xchange, Cypht, hMailServer and 31 more are open source, according to their own sites.
Is Leave Me Alone open source?
Leave Me Alone is not described as open source on its own site. The listing was checked on Oct 9, 2026 against the pages it cites.
Which of these email apps are free?
Zero Mail, Wino Mail, Claws Mail, Sylpheed, Cypht, hMailServer, Proton Mail, Thunderbird and 25 more are free or have a free plan.
When was this checked?
Each listing shows its own date. On this page they run from Oct 4, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Leave Me Alone: the alternatives its listing names first, then the tools that share the most features with it.