Proton Mail vs Mailfence Comparison (2026)

Compare Proton Mail vs Mailfence email services. In-depth analysis of features, pricing, security, privacy, and storage to find the best email provider for your needs.

Written by

Forward Email Team

Published

4/1/26

Time to read

Less than 5 minutes

We recommend Forward Email as the best alternative to Proton Mail. We also support webmail: https://mail.forwardemail.net

Email Service Comparison

20 facts in comparison

Proton Mail	vs.	Mailfence
Proton Mail "Secure email that protects your privacy" Website	vs.	Mailfence "Secure and private email" Website
$3.99/mo	Pricing	$3.50/mo
15 GB	Storage	10 GB
25 MB	Attachments	50 MB
❌ Proton Mail claims to be open-source, but their back-end actually is closed source	Open-Source	No
No	Sandboxed Encryption	No
No	Unlimited Domains	No
No	Unlimited Aliases	No
No	TTI	No
❌ Requires you to download Proton Mail Bridge and forces vendor lock-in	SMTP	Yes
❌ Requires you to download Proton Mail Bridge and forces vendor lock-in	IMAP	Yes
❌ Proton Mail does not support POP3	POP3	Yes
No	API	No
⚠️ Proton Mail rewrites your emails	E2EE	⚠️ Opt-in
Yes	OpenPGP	Yes
Yes	WKD	Yes