Mailfence vs Fastmail 2026 | Which Is Better?

Introduction

When it comes to private email, the mailfence vs fastmail debate keeps coming up, and honestly, it's not a simple call. Both services position themselves as privacy-respecting alternatives to Gmail and Outlook. But they take pretty different approaches to what "private" actually means.

Mailfence is a Belgian email provider that leans hard into security: think OpenPGP encryption, digital signatures, and an integrated productivity suite that includes docs, calendar, and contacts. Fastmail, based in Australia, is less focused on encryption and more focused on delivering a genuinely fast, polished experience with smart features like masked email aliases.

So who wins? That depends entirely on what you need. Let's dig in.

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Feature-by-Feature Comparison

Privacy and Encryption

This is where mailfence vs fastmail gets really interesting. Mailfence supports OpenPGP end-to-end encryption natively. That means your emails can be encrypted in a way that even Mailfence itself cannot read them. It also supports digital signatures, letting recipients verify that a message actually came from you.

Fastmail takes a different stance. It doesn't offer end-to-end encryption by default. Fastmail can technically access your emails, which is a meaningful distinction for anyone seriously concerned about surveillance or data requests. That said, Fastmail does not scan email content for advertising, which puts it well ahead of the free alternatives.

For users who need genuine cryptographic privacy, Mailfence wins this category clearly.

Interface and Usability

Here's the thing: Mailfence's interface is functional, but it feels dated. The layout is reminiscent of early 2010s webmail. It works, but it's not going to win any design awards. Performance can also feel sluggish compared to modern email clients.

Fastmail's interface is a completely different story. It's fast, responsive, and well-designed across both web and mobile apps. Loading times are genuinely impressive. Keyboard shortcuts, snooze features, and a clean visual hierarchy make day-to-day email management feel effortless.

For interface quality and daily usability, Fastmail wins by a wide margin.

Custom Domains

Both services support custom domains on paid plans, so you can use your own address like you@yourdomain.com. Fastmail makes custom domains available even on its lower-tier Basic plan, which is a nice touch. Mailfence also supports custom domains, so this one's essentially a draw, though Fastmail's implementation tends to be smoother to set up.

Masked Email Aliases

Fastmail's masked email alias feature is genuinely useful. Through its integration with 1Password, you can generate disposable email addresses that forward to your real inbox. This protects your actual address from spam and tracking without giving up the ability to receive mail.

Mailfence doesn't offer anything comparable to this. If alias privacy is important to you, Fastmail has a clear advantage here.

Calendar, Contacts, and Productivity

Both tools include calendar and contacts management. Fastmail uses standard CalDAV and CardDAV protocols, which means excellent compatibility with third-party apps like Apple Calendar or Thunderbird. The implementation is polished and reliable.

Mailfence goes further by including integrated document storage alongside its calendar and contacts. If you want a lightweight all-in-one productivity suite bundled with your email, Mailfence has the edge. It's not Google Workspace, but for basic document needs it covers the bases.

Email Filtering and Advanced Features

Fastmail supports Sieve email filtering, which is server-side scripting for email rules. This is powerful stuff for users who want fine-grained control over how incoming mail is sorted, tagged, or redirected. It also provides advanced spam and phishing filtering with customizable rules.

Mailfence offers filtering tools too, but they're less advanced. For power users who love control over their inbox, Fastmail's Sieve support is a genuine differentiator.

Storage

Mailfence's free tier gives you a pretty limited 500MB, which is almost comically small in 2026. The Entry plan at $3.50/mo bumps this up, though specific storage amounts aren't published prominently.

Fastmail's Basic plan (at $3.00/mo billed annually) includes 2GB, Standard gets 30GB, and the Professional tier tops out at 100GB. For anyone with years of email history, those higher tiers matter.

Security Features

Mailfence supports OpenPGP, digital signatures, and end-to-end encryption as discussed. These are serious security features that appeal to journalists, lawyers, activists, or anyone operating in a high-threat environment.

Fastmail supports TOTP-based two-factor authentication and app-specific passwords. It also supports IMAP/SMTP, meaning you can use your preferred desktop or mobile client without being locked into a browser. What it lacks is the cryptographic layer that Mailfence provides.

Jurisdiction and Legal Privacy

Mailfence is based in Belgium, which has relatively strong privacy laws and sits outside the Five Eyes intelligence-sharing alliance. That's meaningful if you're worried about government data requests.

Fastmail is based in Australia, which is a Five Eyes member country. That's worth knowing, even if Fastmail's day-to-day practices are privacy-respecting. For users in sensitive situations, jurisdiction matters.

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Pricing Comparison

Mailfence Pricing

Mailfence prices are listed in USD. The free plan exists but is genuinely limited at 500MB. The Entry plan is affordable for basic use, while the Pro and Ultra plans cater to power users or small teams.

Fastmail Pricing

Fastmail prices are also in USD and billed annually, so you'll pay for the full year upfront. There's no free plan, though a trial is typically available. The Basic plan at $3.00/mo undercuts Mailfence's Entry plan slightly. The Professional plan at $9.00/mo comes in just under Mailfence's Pro at $9.50/mo, while offering more storage (100GB vs Mailfence's Pro tier).

For pure value, Fastmail's pricing is slightly more competitive, particularly on the Professional tier.

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Which Should You Choose?

Choose Mailfence if:

• You need genuine end-to-end encryption using OpenPGP
• Digital signatures are important for your workflow
• You want a productivity suite (docs, calendar, contacts) bundled with email
• Belgium's jurisdiction and non-Five Eyes status matters to you
• You're a journalist, activist, lawyer, or anyone in a high-risk privacy situation

Choose Fastmail if:

• You want a fast, polished email experience that's genuinely pleasant to use every day
• Masked email aliases for spam protection appeal to you
• You need reliable mobile apps that work well
• You want powerful email filtering with Sieve scripting
• You're comfortable with a service that prioritizes usability over cryptographic privacy
• You're a 1Password user who wants deep integration with masked aliases

Look, most regular users will be happier with Fastmail's interface and overall experience. But users with specific privacy or security requirements will find Mailfence's encryption tools irreplaceable.

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Frequently Asked Questions

Is Mailfence or Fastmail more private? Mailfence offers stronger technical privacy through end-to-end encryption and digital signatures, plus it's based in Belgium outside the Five Eyes alliance. Fastmail doesn't offer E2E encryption by default and is based in Australia, a Five Eyes member. For serious privacy needs, Mailfence has the edge.

Does Fastmail have a free plan? No. Fastmail does not offer a permanent free tier. Mailfence does have a free plan, though it's limited to just 500MB of storage, which is quite restrictive.

Can both services use custom domains? Yes. Both Mailfence and Fastmail support custom domains on paid plans. This is useful if you want to receive email at your own domain rather than a generic @mailfence.com or @fastmail.com address.

Which is better for everyday email use? Fastmail wins for everyday use. Its interface is faster, cleaner, and more intuitive. Mailfence's interface is functional but feels outdated. If you're not relying on encryption features, Fastmail is the more enjoyable daily driver.

Does Mailfence support mobile apps? Mailfence is primarily web-based. Fastmail has polished iOS and Android apps, giving it a clear advantage for users who manage email on mobile devices.

Which is cheaper in the long run? Fastmail's Basic and Professional plans are slightly cheaper than Mailfence's comparable Entry and Pro tiers, but Fastmail requires annual billing. Mailfence's pricing structure is more flexible, though the overall cost difference is modest.

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Verdict

In the mailfence vs fastmail debate, the winner depends entirely on your priorities.

Fastmail earns its higher rating of 8.2/10 for good reason. It's genuinely fast, beautifully designed, and packed with practical features like masked aliases and Sieve filtering. For the majority of users looking for a reliable, privacy-respecting Gmail alternative, Fastmail is the better choice.

But Mailfence isn't trying to be Fastmail. Its OpenPGP encryption, digital signatures, and Belgian jurisdiction make it a serious tool for users who need real security guarantees. No interface improvements can replace actual end-to-end encryption when that's what you need.

Bottom line: pick Fastmail for the best overall experience. Pick Mailfence if encryption and jurisdiction are non-negotiable for you.