Posteo vs Tuta Mail

Posteo

• People who want a low-cost, ad-free mailbox they pay for directly
• Signing up without handing over a name, address or phone number
• Buyers who care about green energy and a company financed only by its users

Tuta Mail

• People who want mail, calendar and contacts encrypted by default
• Using a custom domain with an encrypted mailbox
• Non-profits, schools and open source projects, which get discounts

Posteo

• Custom domains are not supported; addresses use Posteo's own domains such as posteo.de, posteo.net or posteo.com.
• There is no free plan and no trial account, though credit is refunded in full if you cancel within the first month.
• Payment is prepaid in euros, with a minimum top-up of €12, which is about one year's fees.
• It is used through webmail and a web app or through other mail apps over IMAP or POP3, and it offers no cloud storage.

Tuta Mail

• The Free plan stops at 1 GB, one calendar and 3 labels, and leaves out inbox rules, offline support and schedule send.
• Free accounts are deleted if you do not log in for more than six months.
• Prices are set in euros. Tuta notes that the final amount can vary with payment platform fees and exchange rates.
• Importing existing mail from EML or MBOX files is limited to Legend and the Unlimited business plan, and works only in the desktop clients.

Posteo

One flat-priced account

€1 a month covers email with 4 GB of storage, 3 aliases, 3 calendars, an address book and notes. Storage can grow to 75 GB and aliases to 25 for small monthly add-on fees.

Encryption of stored data

Crypto mail storage encrypts saved email, attachments, metadata and notes, and the address book and calendar can each be encrypted with your own password at the press of a button.

End-to-end encryption in webmail

PGP through the Mailvelope plug-in and S/MIME through Posteo's own plug-in work inside the webmail interface, and incoming mail can be encrypted with either.

Sign-up without personal details

Registration asks for no name or address, payment data is kept separate from email accounts, and credit can be added by bank transfer, PayPal, credit card or cash.

Calendar, contacts and notes

Calendars sync over CalDAV and can be shared read-only by ICS link, contacts sync over CardDAV, and notes can be synchronized with Apple Notes.

Passkeys and login protection

Login supports two-factor authentication (TOTP), up to 5 passkeys and up to 5 app passwords. An extra protection mode blocks access from external programs over IMAP.

Tuta Mail

End-to-end encryption by default

All data in the mailbox is encrypted so that Tuta has no access to it, and mail between Tuta users is encrypted automatically. Tuta describes its encryption as quantum-safe.

Password-protected emails

Encrypted mail can be exchanged with people who do not use Tuta by agreeing on a shared password with the recipient.

Encrypted calendar and contacts

The calendar and address book are encrypted as well, down to contacts' email addresses and event notifications. Paid plans add calendar sharing and event invites.

Custom domains and extra addresses

The €3 plan includes 3 custom domains and 15 extra addresses, Legend 10 domains and 30 addresses. Paid plans also get catch-all and unlimited custom-domain addresses.

Open-source apps on every platform

The web, Windows, macOS, Linux, Android and iOS clients are published on GitHub under GPLv3, and Tuta runs its own push notification service instead of Google's.

Inbox rules, offline mode, schedule send

Paid plans add unlimited inbox rules, search across the whole mailbox through an encrypted index, offline support, an autoresponder and scheduled sending.

Posteo

• Email account€1

  per month, prepaid from account credit

  4 GB of storage, 3 aliases, 3 calendars, address book and notes. Extra storage costs €0.25 per GB a month and extra aliases or calendars €0.10 each.

Tuta Mail

• Free€0

  1 GB of storage, one calendar and 3 labels. No extra addresses, custom domains, inbox rules, offline support or schedule send.

• Revolutionary€3

  per month, paid yearly (saves €7.20 a year over monthly)

  20 GB of storage, 15 extra addresses, 3 custom domains, unlimited calendars and labels, inbox rules, offline support and email support.

• Essential€6

  per user / month, paid yearly, excluding taxes

  Business plan with 50 GB of storage, 15 extra addresses and 3 custom domains per user.

• Legend€8

  per month, paid yearly (saves €19.20 a year over monthly)

  500 GB of storage, 30 extra addresses, 10 custom domains, EML and MBOX email import and priority email support.

• Advanced€8

  per user / month, paid yearly, excluding taxes

  Business plan with 500 GB of storage, 30 extra addresses and 10 custom domains per user, with priority email support.

• Unlimited€12

  per user / month, paid yearly, excluding taxes

  Business plan with 1000 GB of storage, unlimited custom domains, email templates, custom branding and a login on your own website.

Posteo

No public discounts listed.

Tuta Mail

• Annual discount

  Lower price when paid yearly

  The pricing page lists a yearly saving over monthly billing of €7.20 on the €3 personal plan and €19.20 on Legend. On the business plans the saving is €14.40 to €28.80 per user.

• Nonprofit

  50% discount for non-profits

  Registered non-profit organizations can apply for a 50% discount by contacting Tuta's sales team from the organization's email address with proof of their status.

• Education

  50% discount for schools

  Schools for general education can apply for the same 50% discount by sending a short description, a website link and proof of their status.

• Other savings

  Free for open source projects

  Open source teams can apply for a free version of Tuta by email from an official GitHub address or an address linked to the project's website.