Proton Mail vs Superhuman Mail

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

Superhuman Mail

• People on Gmail or Outlook who work through a high volume of email
• Teams that want to share and comment on threads instead of forwarding them
• Sales teams on HubSpot, Salesforce or Pipedrive (Business plan and up)

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.

Superhuman Mail

• There is no free plan, and the pricing page does not mention a free trial.
• Built for Gmail and Outlook accounts; the vendor lists no other email providers.
• Auto Drafts, Ask AI and the HubSpot, Salesforce and Pipedrive integrations are not included in Starter.
• Starter and Business stop at 25 seats; single sign-on and SCIM are Enterprise only.

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.

Superhuman Mail

Split Inbox

Divides the inbox into separate tabs, for example mail from teammates, VIPs or specific tools, so each stream can be worked through on its own.

Keyboard shortcuts and Snippets

Most actions have a keyboard shortcut, and Snippets insert saved phrases, paragraphs or whole emails as you type.

Superhuman AI

Write with AI, Instant Reply, Auto Summarize and Auto Labels are on every plan. Auto Drafts, Ask AI and the Mail MCP server need Business or Enterprise.

Reminders, snooze and send later

Set a follow-up reminder that fires if nobody replies by a chosen time, snooze threads until they are needed and schedule when a message is sent.

Shared conversations and comments

Share a live view of a thread with teammates, comment on it, work on shared drafts and see when a colleague is already replying.

Calendar and scheduling

See the day's or week's calendar next to an email, create events, share availability and send booking links, with Zoom, Google Meet and Microsoft Teams links.

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.

Superhuman Mail

• Starter$25

  per member / month, billed annually ($30 billed monthly)

  Split Inbox, Snippets, core AI writing and summaries, calendar and booking links, and team sharing. Up to 25 seats.

• Business$33

  per member / month, billed annually ($40 billed monthly)

  Everything in Starter, plus Auto Drafts, Ask AI, the Mail MCP server, CRM integrations and Recent Opens. Up to 25 seats.

• EnterpriseCustom

  Everything in Business, plus single sign-on, SCIM provisioning, audit logs, team analytics and unlimited seats.

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.

Superhuman Mail

• Annual discount

  17% off with annual billing

  The pricing page shows 17% off for annual billing: Starter is $25 per member a month billed annually against $30 billed monthly, and Business is $33 against $40.