Best Gmail Alternatives in 2026: Private, Encrypted and Self-Hosted Email

Proton Mail and Tuta are the best Gmail alternatives if you want end-to-end encrypted email, Fastmail and mailbox.org are the established paid providers for people who want ad-free mail on their own domain, and Zoho Mail suits small businesses that want a free plan with a custom domain. If you want full control, Mailcow, Mail-in-a-Box and Stalwart let you run your own server, with real caveats.

This guide compares email providers, meaning where your mail is stored and who runs it. If you are choosing an app to read mail, such as Thunderbird, see the best email clients guide instead. The picks start with hosted providers, then move to self-hosted servers, with a decision table at the end.

Why people look for Gmail alternatives

Gmail is free, fast and part of Google's wider suite. Enlisted's data shows why some people still want to move.

• Closed source, hosted by Google only. Enlisted lists Gmail as proprietary with no self-hosted version, so your mailbox lives on Google's systems under a Google account.
• A Google account for everything. Gmail sits alongside Drive, Docs, Calendar, Meet and a growing set of Gemini AI features. People who want email separated from a larger ecosystem look elsewhere.
• Custom domains cost extra. Personal Gmail accounts are widely available at no charge, while business email on your own domain is sold through Google Workspace plans.
• Encryption and data location. Providers such as Proton Mail and Tuta describe end-to-end encryption, and others such as Fastmail and Zoho Mail let you choose where data is kept.
• Ad-free as a product feature. Several paid providers sell the absence of ads as the reason to pay.

How we picked

Each provider had to give you a full mailbox with webmail, standard sending and receiving, and mobile or desktop access. Enlisted's data decided the rest: whether there is a free plan or trial, where the provider is based or hosts data, whether clients are open source, and for self-hosted servers a licence and recent GitHub activity. Facts come from Enlisted's listings and each vendor's own site, and encryption and privacy statements are the vendors' claims, not our own findings. The full criteria are set out in how Enlisted ranks tools.

1. Proton Mail: best encrypted Gmail alternative with a free plan

Proton Mail is an encrypted email service from Proton, a company based in Switzerland, that offers a free plan and apps for web, iOS, Android and desktop. Proton says it uses end-to-end encryption and zero-access encryption, so that not even Proton can read your emails, that it is incorporated and headquartered in Switzerland, and that it will always offer a free plan with the same security as the paid ones.

Enlisted lists the service as proprietary, while Proton says its apps are open source and independently audited, and the code for its web apps is published in the Proton web clients repository. A separate add-on called Bridge lets you read your mailbox in a desktop email client, and paid plans support custom domains. Proton also publishes guides for moving from Gmail. See more at Proton Mail alternatives.

• Best for: people who want an encrypted, mainstream Gmail replacement that starts free.
• Watch out for: the free plan has limited storage, custom domains need a paid plan, and reading your mailbox in a desktop email app needs the separate Bridge add-on.

2. Tuta: best open-source encrypted email, calendar and contacts

Tuta, formerly Tutanota, is an encrypted email, contacts and calendar service whose client apps are open source. Tuta says it encrypts emails, subject lines, contacts and calendar entries end to end, describes a zero-knowledge architecture and says it uses quantum-safe encryption. It is based in Germany and says it runs on renewable energy.

The client code is released under GPL-3.0 and covers a web client, desktop apps and mobile apps on Android and iOS. Tuta says it is free, forever, and its paid plans add more storage, with custom-domain accounts promoted on its site. Its overview notes you can write securely to people on other providers. Read the Tuta page for details.

• Best for: privacy-focused users who want the whole mailbox, calendar and contacts encrypted and the client code open for audit.
• Watch out for: Enlisted lists no self-hosted version, and the open-source repository covers the client apps. Enlisted lists Tuta's own web, desktop and mobile clients, so check whether you can use third-party email apps before you switch.

3. Fastmail: best paid, ad-free provider with open standards

Fastmail is a paid email provider with custom domains, calendar, contacts, masked email addresses and a choice of EU or US data residency. Its homepage says it serves its customers rather than advertisers, with no ads, and that it helps develop JMAP, an open sync protocol. Features include pinning and snoozing messages, strong search and offline access to mail, calendar and contacts.

Fastmail offers a free 30-day trial rather than a free plan and publishes guides for moving from Gmail, Outlook, Yahoo, Proton and HEY. Masked Email creates a separate address per site, which keeps your real one private. See Fastmail alternatives for similar services.

• Best for: people and businesses that want a polished paid mailbox on their own domain.
• Watch out for: there is no free plan, and its homepage describes privacy through no ads and data residency, not end-to-end encryption, so choose Proton Mail or Tuta if encryption is a requirement.

4. mailbox.org: best German workspace with email, office tools and meetings

mailbox.org is a German secure email and collaboration service with calendar, contacts, cloud storage, office tools and video meetings. It says data is stored in certified German data centres with encryption during storage and transmission, and that it is GDPR-compliant with ISO 27001 certification and BSI C5 attestation. It calls its mail ad-free, and says it runs on renewable electricity.

Custom domain names are supported on its Standard and Premium private plans, and the site offers a free 30-day trial. It is a good fit for people who want more than a mailbox from a European provider. See the mailbox.org page.

• Best for: individuals and small organizations that want email, files, office tools and meetings from one German provider.
• Watch out for: it is paid with no free plan, and it is closed source, so the encryption and compliance claims rest on the vendor's documentation.

5. Posteo: best low-cost, ad-free email with calendar and contacts

Posteo is an independent, ad-free email provider based in Germany that also offers synchronized calendars and address books. The company says it applies comprehensive encryption, lists anonymised payment options and a transparency report, supports passkey login, and says it is powered by renewable energy.

A single ad-free account is a low monthly fee in Enlisted's data, with no free plan or trial. The interface is available in German, French, Spanish and English. It suits people who want simple, privacy-conscious mail without a suite attached. See Posteo alternatives.

• Best for: privacy-minded individuals who want inexpensive email, calendar and contacts and the option to pay anonymously.
• Watch out for: it focuses on mail, calendar and contacts rather than a full office suite, and it is closed source.

6. StartMail: best for aliases and encrypted mail to anyone

StartMail is a paid, private, ad-free email service hosted in the Netherlands that says it does not track or profile users. It offers unlimited disposable aliases that you can create and delete at any time, which helps keep your main address private and reduces spam and phishing, plus one-click encrypted email.

Its site says recipients who do not use encryption can read and reply to an encrypted message using a password the sender sets. A business edition is available, and Enlisted lists a short free trial. See the StartMail entry.

• Best for: people who want aliases built in and a simple way to send sensitive mail to non-technical recipients.
• Watch out for: it is paid with only a short trial, and closed source.

7. Zoho Mail: best for small businesses that want a free plan on their own domain

Zoho Mail is an ad-free business email hosting service from Zoho with custom domains, calendar, contacts, tasks and notes. It lets customers pick from more than ten data centers worldwide, and Zoho says it applies TLS, S/MIME and AES-256 encryption at rest. Native desktop and mobile apps and offline access are listed on its site.

Enlisted lists a forever-free plan that is limited to a small number of users on one domain, plus paid tiers and a trial of the top edition, so a very small team can use a custom domain without paying. It fits especially well with other Zoho products. See Zoho Mail alternatives.

• Best for: very small businesses and teams that want business email on their own domain and already use, or plan to use, other Zoho apps.
• Watch out for: it is built for organizations with a domain rather than for personal inboxes, and it is closed source and hosted only.

8. HEY: best for people who want to rethink the inbox

HEY is a paid email and calendar service from 37signals, the company behind Basecamp, that screens unknown senders and groups mail into bundles instead of one long inbox. People you have not approved cannot land in the main inbox. The vendor frames it as a privacy-respecting alternative to the large providers.

Besides personal accounts, it offers a plan for custom domains and a calendar app. Enlisted lists no free plan and a trial. It is closer to a different way of using email than to a Gmail clone. See HEY alternatives.

• Best for: people overwhelmed by email who are willing to adopt a new inbox model.
• Watch out for: its model is opinionated, so expect to relearn how you handle mail, and check how it works with other email apps before relying on it. It is paid, with no free plan.

9. Microsoft Outlook: best for Microsoft 365 and Outlook.com users

Microsoft Outlook is Microsoft's email, calendar and contacts service for personal accounts at outlook.live.com and for work or school accounts in Microsoft's business offerings. It is delivered mainly as a hosted service with web, desktop and mobile clients, and Enlisted lists a free plan.

Outlook is both a mail service and an app, which confuses people comparing options: the service stores your mail, while the Outlook app can also be used with other providers' mailboxes. If you already use Microsoft 365 for work, an Outlook.com address is the least disruptive swap away from Gmail. Confirm current plans on Microsoft's site. See Outlook alternatives.

• Best for: people who already live in Microsoft's calendar, Office and Teams ecosystem.
• Watch out for: it is closed source and tied to a Microsoft account, so it does not address privacy or self-hosting reasons for leaving Gmail.

10. Mailcow: best self-hosted mail suite with a web interface

Mailcow is an open-source, Dockerized mail server suite that bundles SMTP, IMAP, spam filtering and webmail so you can host your own email and groupware. It runs as a set of Docker containers managed with Docker Compose and is built on Postfix, Dovecot, Rspamd, ClamAV and the SOGo groupware and webmail, with ACME support for certificates and a web administration interface.

It is released under GPL-3.0, and paid support contracts are offered through Servercow. This is self-hosting for someone comfortable with Docker and DNS; read the section on running your own mail server below first.

• Best for: administrators who want a full, groupware-style mail server for their own domain.
• Watch out for: you own deliverability, security updates and backups, and mail from a new server can be treated with suspicion by large providers.

11. Mail-in-a-Box: best one-step mail server for a fresh Ubuntu machine

Mail-in-a-Box turns a fresh Ubuntu server into a complete mail server with webmail, DNS, spam filtering and automatic TLS. It installs Postfix for SMTP, Dovecot for IMAP, Roundcube webmail and Nextcloud for contacts and calendars, and it sets up SPF, DKIM, DMARC and DNSSEC records for you, with Let's Encrypt certificates and backups.

The project says there are no user-configurable setup options, which makes it simple but not flexible, and it targets a specific Ubuntu LTS release. It is released under CC0-1.0. See the Mail-in-a-Box page.

• Best for: individuals and families who want to run their own mail with as little configuration as possible.
• Watch out for: it expects a dedicated, fresh machine, so it does not share a server with other apps, and you still handle updates and deliverability.

12. Stalwart: best all-in-one modern mail and collaboration server

Stalwart is an open-source mail and collaboration server written in Rust that speaks JMAP, IMAP, POP3, SMTP, CalDAV, CardDAV and WebDAV, so one server can handle email, calendars, contacts and files. Its SMTP side includes DMARC, DKIM, SPF and ARC, a built-in spam and phishing filter and access controls.

Stalwart's site describes installing it in minutes and running from a single node up to multi-tenant platforms. A free Community edition and a paid Enterprise edition exist, and Enlisted lists no licence value for the project, so check the repository's licence terms before you deploy. See the Stalwart listing.

• Best for: technical users who want a modern one-server replacement for a multi-component mail stack.
• Watch out for: it is a server, not a ready-made mailbox service, and the licensing terms differ by edition.

Other self-hosted mail servers

Mailu is a mail server packaged as Docker images with webmail and an admin interface. docker-mailserver runs Postfix and Dovecot in one container with configuration files only and no SQL database. Mox is a self-hosted server meant to be low-maintenance, with SMTP, IMAP, webmail and a web admin. Maddy is a Go mail server in a single daemon, with IMAP storage still marked beta. Modoboa adds a web interface over Postfix, Dovecot and Rspamd. Roundcube is a browser-based IMAP webmail client you can put in front of a server. If you want to hide your real address instead of changing provider, SimpleLogin is an open-source alias service you can also self-host.

Can you really run your own email server?

Self-hosting mail is harder than self-hosting most apps, because email is a system other servers have to trust. To send mail that is not junked, you need a server with a stable address, correct DNS records for SPF, DKIM and DMARC, and a good reputation with large providers. A new server can have mail rejected or filed as spam even when the setup is correct, and some hosting providers restrict outgoing mail by default, so check before you rent a server. Spam filtering, security updates and backups are then your job, and a failed server can mean lost or delayed mail.

The tools above reduce the work. Mail-in-a-Box sets up the DNS records automatically, and Mailcow and Mailu bundle spam filtering and webmail. They do not change the reputation problem. A middle path is to keep a hosted mailbox on your own domain, which Fastmail, Proton Mail, Tuta, mailbox.org and Zoho Mail support, so you can switch provider later without changing your address.

Alternatives to Fastmail, Zoho Mail and Outlook

If you are leaving one of the other big names, the same list applies. Fastmail users who want end-to-end encryption can look at Proton Mail or Tuta, and those who want a similar paid service can compare mailbox.org, Posteo or StartMail. Zoho Mail users who outgrow it usually move to Fastmail or Microsoft Outlook, and Outlook users commonly choose Fastmail or Proton Mail. Whether a provider works with third-party email apps varies, which the best email clients guide covers.

Moving from Gmail: what to plan

Switching providers is mostly about not losing your address. Move to a custom domain first if you can, so the next move is painless. Fastmail and Proton both publish guides for moving from Gmail, and both support custom domains on paid plans. Keep Gmail forwarding on for a while so you catch accounts that still use the old address, and update your important logins. If you are also moving files, the Dropbox and Google Drive alternatives guide covers storage, and the best password managers guide helps with updating logins.

Which Gmail alternative should you choose?

For a wider view, see all Gmail alternatives on Enlisted, or browse the email category. To choose an app for reading mail across providers, read the best email clients guide.