Heimdal vs Apple Mail (iCloud) Comparison (2025)

What are the differences between Heimdal and Apple Mail (iCloud)?

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 Heimdal.

Email Service Comparison

20 facts in comparison
Heimdalvs.Apple Mail (iCloud)

Heimdal

One Platform. Total Security.
"One Platform. Total Security."
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
vs.

Apple Mail (iCloud)

Private, secure, and personal email from Apple
"Private, secure, and personal email from Apple"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
Requires you to talk to a sales teamPricing$0.99
Requires 3rd partyStorage50 GB pooled
UnknownAttachments20 MB
NoOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
❌ Requires 3rd partySMTPYes
❌ Requires 3rd partyIMAPYes
❌ Requires 3rd partyPOP3❌ iCloud does not support POP3
YesAPINo
NoE2EE No
NoOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

Heimdal

Heimdal is a closed-source email service. According to their website: One Platform. Total Security.

Heimdal is a closed-source email service.
Screenshot by Forward Email
Go to site
Closed-source

Apple Mail (iCloud)

Apple Mail (iCloud) is a closed-source email service. According to their website: Private, secure, and personal email from Apple

Apple Mail (iCloud) is a closed-source email service.
Photograph by Forward Email
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Compare Heimdal with 78 email services