Spam Hero vs addy.io Comparison (2026)

What are the differences between Spam Hero and addy.io?

Forward Email Team
Written by
Forward Email TeamVerified
Published
2/1/26
Time to read
Less than 5 minutes
We recommend Forward Email as the best alternative to Spam Hero. We also support webmail: https://mail.forwardemail.net

Email Service Comparison

20 facts in comparison
Spam Herovs.addy.io

Spam Hero

Cloud-Based Spam Filtering
"Cloud-Based Spam Filtering"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
vs.

addy.io

Protect your real email address using email aliases
"Protect your real email address using email aliases"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
$8/moPricing$4/mo
Requires 3rd partyStorageNo addy.io does not support storage
50 MBAttachments25 MB
NoOpen-SourceYes
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesYes
NoTTI No
❌ Requires 3rd partySMTPNo
❌ Requires 3rd partyIMAPNo
❌ Requires 3rd partyPOP3No
YesAPINo
NoE2EE No
NoOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

Spam Hero

Spam Hero is a closed-source email service. Its description from its website is: Cloud-Based Spam Filtering

Spam Hero is a closed-source email service.
Photo by Forward Email
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Open-source

addy.io

addy.io is an open-source email service. According to their website: Protect your real email address using email aliases

addy.io is an open-source email service.
Photo by Forward Email
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Compare Spam Hero with 78 email services