Fastmail vs Proton Mail

Fastmail

• People leaving free, ad-funded email for a paid private service
• Using your own domain for personal or family addresses
• Small businesses that want email without a full office suite

Proton Mail

• People who want an email provider that cannot read their messages
• Anyone moving off Gmail, Outlook or Yahoo who needs to import old mail
• Users who want email, VPN, passwords and storage from one vendor

Fastmail

• There is no free plan. After the 30-day trial every account is paid, and Fastmail does not refund unused subscription time.
• The Basic business plan has 6 GB per user and leaves out custom domains, Scheduled Send, Snooze and third-party mail apps.
• Storage beyond the plan allowance is a paid add-on, up to 300 GB per user.
• Listed prices are tax-exclusive.

Proton Mail

• The free plan is limited to 1 address, up to 1 GB of mail storage and 150 sent messages a day.
• Custom domains and IMAP/SMTP access through Bridge need a paid plan.
• The desktop apps need a paid plan; free accounts get a 14-day trial of them, and the Linux app is labeled beta.
• Buying in the iOS app costs more: the US App Store lists Mail Plus at $5.99 monthly, against $4.99 on Proton's site.

Fastmail

Custom domains and extra addresses

Use domains you own for your addresses, buy one through Fastmail, or pick one of its free domains. Fastmail says each account can create hundreds of additional addresses.

Masked Email

Creates stand-in addresses so that sign-up forms and logins never see your real one. A Masked Email API lets password managers create them too.

Offline apps on every platform

Apps for Windows, macOS, Linux, iOS and Android, plus a browser app. Offline, you can read, draft and search mail and manage calendars and contacts.

Snooze, Scheduled Send and pinning

Snooze messages until they are needed, schedule sends for later, pin important messages to the top of the inbox and mute threads you do not want to follow.

Calendar and contacts

A built-in calendar with shared calendars and event invitations that can also display Google and iCloud calendars, and a contact list with VIP-only notifications.

Open protocols and import

Mail is reachable over JMAP, IMAP and POP, contacts over CardDAV and calendars over CalDAV. An import tool moves mail, calendars and contacts from another provider.

Proton Mail

End-to-end and zero-access encryption

Messages are encrypted so that only you can read them. Proton states that not even it can read your email.

Tracker blocking and aliases

Blocks the email trackers that report what you open and click. Hide-my-email aliases keep your real address off sign-up forms: 10 on Free and Mail Plus, unlimited on Proton Unlimited.

Custom domains and extra addresses

Mail Plus supports 1 custom email domain and up to 10 addresses. Proton Unlimited raises that to 3 domains and 15 addresses.

Easy Switch import

Imports existing mail from Gmail, Outlook, Yahoo or Apple accounts. The import assistant is included on the free plan.

Proton Mail Bridge

Paid accounts can use the Bridge app to read and send encrypted mail in Microsoft Outlook, Mozilla Thunderbird or Apple Mail over IMAP and SMTP.

Calendar and scheduling tools

Proton Calendar is included, with 3 personal calendars on Free and up to 25 on Mail Plus. Mail also supports scheduled sending, undo send and snooze.

Fastmail

• Basic$3

  per user / month, billed yearly ($36); $4 billed monthly

  Business plan with 6 GB of storage per user, shared addresses and shared calendars. Custom domains, Snooze and third-party mail apps need Standard.

• Individual$5

  per month, billed yearly ($60); $6 billed monthly

  One private inbox with 60 GB of total storage, custom domains, Masked Email, offline support and access from third-party mail apps.

• Standard$5

  per user / month, billed yearly ($60); $6 billed monthly

  Business plan with 60 GB per user, addresses at a custom domain, shared addresses and calendars, Scheduled Send and third-party app access.

• Duo$8

  per month for 2 people, billed yearly ($96); $10 monthly

  Two private inboxes with 60 GB each, plus addresses, calendars and an address book the two can share.

• Professional$9

  per user / month, billed yearly ($108); $10 billed monthly

  Everything in Standard with 150 GB of storage per user and an email retention archive for legal compliance.

• Family$11

  per month for up to 6 people, billed yearly ($132); $14 monthly

  Up to six private inboxes with 60 GB each at a flat rate, with controls for managing users' storage, privacy and security.

Proton Mail

• Proton Free$0

  1 address, up to 1 GB of mail storage, 150 sent messages a day, the Easy Switch import tool and 3 calendars.

• Mail Plus$3.99

  per month, billed every 12 months ($47.88); $4.99 billed monthly

  1 user with 10 addresses, 15 GB of storage, 1 custom domain, unlimited folders, labels and filters, and Bridge for IMAP/SMTP clients.

• Proton Unlimited$9.99

  per month, billed every 12 months ($119.88)

  500 GB of storage, 15 addresses and 3 custom domains, bundled with Proton's VPN, password manager and cloud storage.

Fastmail

• Annual discount

  Save $12 a year on Individual with yearly billing

  Individual costs $60 for 12 months, the equivalent of $5 a month, against $6 when billed monthly. Paying yearly saves $24 on Duo, $36 on Family and $12 per user on the business plans.

• Other savings

  Lower rates on 2- and 3-year terms

  Paying for 24 or 36 months up front brings Individual to $114 or $168, the equivalent of $4.75 or $4.67 a month. The other plans have the same two- and three-year options.

Proton Mail

• Annual discount

  20% off Mail Plus on the 12-month plan

  Proton's pricing page lists Mail Plus at $3.99 a month when billed every 12 months ($47.88), against $4.99 billed monthly.