Tuta review

Tuta encrypts more of the mailbox than most rivals: mail, the address book including contacts' email addresses, and calendars including notifications. It describes its encryption as quantum-resistant and its architecture as zero-knowledge, and it stores data on its own servers in ISO 27001 certified data centers in Germany. The free plan gives 1 GB, one calendar and three labels, enough to test the service. Revolutionary adds 20 GB, unlimited calendars and labels, 15 extra addresses and three custom domains, while Legend raises that to 500 GB, 30 addresses and ten domains. Search runs on an encrypted index, so you can search the whole mailbox without the server reading it, and the apps work offline. Sending encrypted mail to outsiders uses a shared password. Tuta lists prices in euros, which is why we could not verify a USD figure. Family accounts are possible, but you have to contact support after choosing a plan to switch on multi-user support.

Who it is for

users who want encrypted mail, contacts and calendars at a low price

Price

See vendor pricing (USD check pending).

US price check pending. See the vendor pricing page.

Key features

• Free plan with 1 GB storage, one calendar and 3 labels
• Revolutionary plan with 20 GB, 15 extra addresses and 3 custom domains
• Quantum-resistant encryption of mail, contacts and calendars
• Encrypted search index for full mailbox search
• Servers in ISO 27001 certified data centers in Germany

Strengths and weaknesses

• Strength: Calendar data, including notifications, is encrypted
• Strength: Address book entries are encrypted, including contacts' email addresses
• Strength: Clients are fully open source
• Weakness: Prices are listed in euros, so the USD price is pending
• Weakness: Free plan has only 1 GB and one calendar
• Weakness: Multi-user family setup needs a request to support

Key facts

• Free plan: Yes, 1 GB
• Storage: 1 GB free, 20 GB Revolutionary, 500 GB Legend
• Custom domains: 3 on Revolutionary, 10 on Legend
• Servers: Germany
• Users claimed: Over 10 million

Where it ranks

Tuta is No. 2 in our Best Secure Email Services verdict.