Proton Mail vs Fastmail Masked Email

Proton Mail9.0Visit Fastmail Masked Email8.6Visit

Higher score Proton Mail #3 in Personal Email Services 9.0/10 Free plan Free planFree trial✓ 1 of 3 features Visit Proton Mail

vs

Fastmail Masked Email #6 in Personal Email Services 8.6/10 30-day trial Free trial✓ 0 of 3 features Visit Fastmail

• Proton Mail fits best

  Privacy-focused users

• Fastmail Masked Email fits best

  Masked email and privacy controls

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Side by side

Feature	Proton Mail 9.0/10 Visit ↗	Fastmail Masked Email 8.6/10 Visit ↗
At a glance
Editor score	9.0	8.6
Ranking	#3 in Personal Email Services	#6 in Personal Email Services
Best for	Privacy-focused users	Masked email and privacy controls
Pricing model	Free plan + paid	Paid
Starting price	$3.99/user/mo (best)	$4/user/mo
Free plan	✓ (best)	—
Free trial	14 days	30 days
Free trial length	14 days · no card needed	30 days
Deployment	Cloud, Desktop, Mobile	Cloud, Desktop, Mobile
Platforms	Web, Windows, macOS, Linux, iOS, Android	Web, Windows, macOS, iOS, Android
Support	Email, Live chat, Tickets, Docs	Email, Tickets, Docs · 24/7
Compliance	GDPR, 2FA	2FA
Integrations	4 integrations	6 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features Proton Mail 1/3 · Fastmail Masked Email 0/3
Custom domain	✓ (best)	Not checked yet
Email aliases	Not checked yet	Not checked yet
Ad-free inbox	Not checked yet	Not checked yet
Specs
Mailbox storage	15 GB (best)	5 GB
Attachment limit	Not checked yet	50 MB
Platform access	Not checked yet	Not checked yet
Our review
Pros	End-to-end encryption between Proton Mail users Tracker blocking, phishing protection, and suspicious-link confirmation Web, desktop, and mobile apps with migration tools	Generates unique masked addresses and lets you block or delete them Supports aliases, catch-all addresses, and replies from masked addresses Includes migration tools, calendar, contacts, and broad platform coverage
Cons	The free plan includes only 1 GB of storage Only one encrypted email address is included on the free plan Custom domains and expanded aliases require paid plans	No free plan; paid access starts at $4 per user per month Basic excludes IMAP, POP, SMTP, CalDAV, and CardDAV access Masked Email is part of Fastmail rather than a separately priced product
Our verdict	Proton Mail is an encrypted email service for individuals, organizations, journalists, activists, and businesses. It combines end-to-end encryption for messages between Proton Mail users with zero-access encryption for stored messages and… Read the review →	Fastmail Masked Email generates unique email addresses for online accounts, helping keep a real address private and allowing individual addresses to be blocked or deleted. It is a feature of the broader Fastmail hosted email service, which… Read the review →

Strengths and trade-offs

• Proton Mail — where it wins

  • End-to-end encryption between Proton Mail users
  • Tracker blocking, phishing protection, and suspicious-link confirmation
  • Web, desktop, and mobile apps with migration tools

  Where it doesn't

  • The free plan includes only 1 GB of storage
  • Only one encrypted email address is included on the free plan
  • Custom domains and expanded aliases require paid plans

• Fastmail Masked Email — where it wins

  • Generates unique masked addresses and lets you block or delete them
  • Supports aliases, catch-all addresses, and replies from masked addresses
  • Includes migration tools, calendar, contacts, and broad platform coverage

  Where it doesn't

  • No free plan; paid access starts at $4 per user per month
  • Basic excludes IMAP, POP, SMTP, CalDAV, and CardDAV access
  • Masked Email is part of Fastmail rather than a separately priced product

• Proton Mail9.0/10 · Free plan

  A privacy-focused email service with strong encryption, migration tools, and broad platform coverage.

  Visit Proton MailFull verdict →
• Fastmail Masked Email8.6/10 · 30-day trial

  A paid Fastmail service for masked addresses, hosted email, calendars, and contacts.

  Visit FastmailFull verdict →