Mailgun vs Posteo Comparison (2026)

Compare Mailgun vs Posteo 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 Mailgun. We also support webmail: https://mail.forwardemail.net

Email Service Comparison

20 facts in comparison
Mailgunvs.Posteo

Mailgun

Flexible, scalable, and results driven email sending platform
"Flexible, scalable, and results driven email sending platform"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
vs.

Posteo

Green, secure, ad-free
"Green, secure, ad-free"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
$35/moPricing€1/mo
No Mailgun does not support storageStorage2 GB
25 MBAttachments50 MB
NoOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
YesSMTPYes
NoIMAPYes
NoPOP3Yes
YesAPINo
NoE2EE ⚠️ Opt-in
NoOpenPGP Yes
NoWKD Yes

Email Service Screenshots

Closed-source

Mailgun

Mailgun is a closed-source email service. Their official description reads: Flexible, scalable, and results driven email sending platform

Mailgun is a closed-source email service.
Photo by Forward Email
Visit Website
Closed-source

Posteo

Posteo is a closed-source email service. Its description from its website is: Green, secure, ad-free

Posteo is a closed-source email service.
Photo by Forward Email
Go to site

Compare Mailgun with 78 email services