Mailfence can be used without paying: Free plan with 1 GB; paid Base to Ultra plans add storage. Check the vendor’s pricing page for current limits.

Is Mailfence open source?

No. Mailfence is proprietary software; its source code is not public.

Which platforms does Mailfence support?

Mailfence is available on: Web, iOS, Android.

What is Mailfence best for?

OpenPGP email in the browser with a free plan. In our ranking of secure email providers it is number 3 of 6 with a score of 86.5.

What are the best alternatives to Mailfence?

The highest-ranked alternatives on listme.name are Proton Mail, Tuta, Posteo, Runbox.

Mailfence Review, Pricing & Alternatives (2026)

86.5score

Ranked 3 of 6 in best secure email providers

OpenPGP encryption in the browser and a free plan with 1 GB, under Belgian privacy law. It needs OpenPGP key management, which adds setup that Proton and Tuta do not need.

Best for OpenPGP email in the browser with a free plan

About Mailfence

Mailfence lets you encrypt and sign messages with OpenPGP, so you can exchange encrypted email with people who use other OpenPGP software. Key creation and management happen in the browser, and the web app needs no plug-ins. Apps for iOS and Android and a progressive web app are listed, along with IMAP, POP and SMTP access.

The free plan provides 1 GB of storage. Paid Base, Entry, Pro and Ultra plans offer 11 GB to 225 GB, and the company says it donates 15% of Ultra plan revenue to the Electronic Frontier Foundation. The site states that its service is protected by Belgian privacy law.

Key features

OpenPGP end-to-end encryption
No plug-ins needed
Free plan with 1 GB
Donates Ultra revenue to the EFF
iOS and Android apps

Strengths

OpenPGP end-to-end encryption done in the browser
Free plan with 1 GB and no plug-ins
Donates 15% of Ultra revenue to the EFF

Limits

OpenPGP key management adds setup
Free storage is limited to 1 GB

Where Mailfence ranks

List	Rank	Score	Best for
Best Secure email providers	3 of 6	86.5	OpenPGP email in the browser with a free plan

Alternatives to Mailfence

All 5 alternatives

Compare Mailfence

Questions about Mailfence

Is Mailfence free?: Mailfence can be used without paying: Free plan with 1 GB; paid Base to Ultra plans add storage. Check the vendor’s pricing page for current limits.
Is Mailfence open source?: No. Mailfence is proprietary software; its source code is not public.
Which platforms does Mailfence support?: Mailfence is available on: Web, iOS, Android.
What is Mailfence best for?: OpenPGP email in the browser with a free plan. In our ranking of secure email providers it is number 3 of 6 with a score of 86.5.
What are the best alternatives to Mailfence?: The highest-ranked alternatives on listme.name are Proton Mail, Tuta, Posteo, Runbox.