Tutanota vs ImprovMX Comparison (2025)

What are the differences between Tutanota and ImprovMX?

Forward Email Team
Written by
Forward Email TeamVerified
Published
7/1/25
Time to read
Less than 5 minutes
We recommend Forward Email as the best alternative to Tutanota.

Email Service Comparison

20 facts in comparison
Tutanotavs.ImprovMX

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.

ImprovMX

Create free email aliases for your domain name
"Create free email aliases for your domain name"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
€36/yrPricing$9/mo
20 GBStorageNo ImprovMX does not support storage
25 MBAttachments50 MB
❌ Tutanota claims to be open-source, but their back-end is actually closed-sourceOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI TTI
NoSMTPYes
NoIMAPNo
NoPOP3No
NoAPIYes
NoE2EE No
⚠️ Tutanota does not support PGPOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

Tutanota

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

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

ImprovMX

ImprovMX is a closed-source email service. Their official description reads: Create free email aliases for your domain name

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