Tutanota vs Altospam Comparison (2026)

Compare Tutanota vs Altospam email services. In-depth analysis of features, pricing, security, privacy, and storage to find the best email provider for your needs.

Forward Email Team
Written by
Forward Email TeamVerified
Published
4/1/26
Time to read
Less than 5 minutes
We recommend Forward Email as the best alternative to Tutanota. We also support webmail: https://mail.forwardemail.net

Email Service Comparison

20 facts in comparison
Tutanotavs.Altospam

Tutanota

Secure, green and ad-free. Email to feel good about
"Secure, green and ad-free. Email to feel good about"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
vs.

Altospam

Antispam, Antivirus & Anti-Phishing Software
"Antispam, Antivirus & Anti-Phishing Software"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
€36/yrPricingRequires you to talk to a sales team
20 GBStorageRequires 3rd party
25 MBAttachmentsUnknown
❌ Tutanota claims to be open-source, but their back-end is actually closed-sourceOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
NoSMTP❌ Requires 3rd party
NoIMAP❌ Requires 3rd party
NoPOP3❌ Requires 3rd party
NoAPIYes
NoE2EE No
⚠️ Tutanota does not support PGPOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

Tutanota

Tutanota is a closed-source email service. Their website says: Secure, green and ad-free. Email to feel good about

Tutanota is a closed-source email service.
Photograph by Forward Email
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Closed-source

Altospam

Altospam is a closed-source email service. According to their website: Antispam, Antivirus & Anti-Phishing Software

Altospam is a closed-source email service.
Screenshot by Forward Email
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Compare Tutanota with 78 email services