SMTP2GO vs Startmail Comparison (2026)

Compare SMTP2GO vs Startmail 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 SMTP2GO. We also support webmail: https://mail.forwardemail.net

Email Service Comparison

20 facts in comparison
SMTP2GOvs.Startmail

SMTP2GO

Like a first-class courier, for email
"Like a first-class courier, for email"
  • 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 SMTP2GO does not support storageStorage20 GB
50 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

SMTP2GO

SMTP2GO is a closed-source email service. Its description from its website is: Like a first-class courier, for email

SMTP2GO is a closed-source email service.
Screenshot by Forward Email
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Closed-source

Startmail

Startmail is a closed-source email service. Their website says: Private email you can trust

Startmail is a closed-source email service.
Photo by Forward Email
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Compare SMTP2GO with 78 email services