Mailtrap vs Startmail Comparison (2025)

What are the differences between Mailtrap and Startmail?

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 Mailtrap.

Email Service Comparison

20 facts in comparison
Mailtrapvs.Startmail

Mailtrap

Email Delivery Platform that delivers just in time. Great for businesses and individuals
"Email Delivery Platform that delivers just in time. Great for businesses and individuals"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
vs.

Startmail

Private email you can trust
"Private email you can trust"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
$10/moPricing$7/mo
No Mailtrap does not support storageStorage20 GB
10 MBAttachments25 MB
NoOpen-SourceNo
NoSandboxed Encryption ❌ Startmail claims to use a User Vault, but this statement has not been audited and their source code is closed-source
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
YesSMTPYes
NoIMAPYes
NoPOP3Yes
YesAPINo
NoE2EE ⚠️ Supported if both sender and recipient are using OpenPGP
NoOpenPGP ⚠️ Supports OpenPGP, but does not support WKD
NoWKD No

Email Service Screenshots

Closed-source

Mailtrap

Mailtrap is a closed-source email service. Its description from its website is: Email Delivery Platform that delivers just in time. Great for businesses and individuals

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

Startmail

Startmail is a closed-source email service. According to their website: Private email you can trust

Startmail is a closed-source email service.
Photo by Forward Email
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Compare Mailtrap with 78 email services