Intercom vs Mimecast Comparison (2025)

What are the differences between Intercom and Mimecast?

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 Intercom.

Email Service Comparison

20 facts in comparison
Intercomvs.Mimecast

Intercom

The only AI customer service solution you need
"The only AI customer service solution you need"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
vs.

Mimecast

Email & Collaboration Security
"Email & Collaboration Security"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
$39/moPricingSee Mimecast plans (requires you to talk to a sales team) (according to a Reddit thread it may cost upwards of +$1000-2000 per month)
No Intercom does not support storageStorageUnknown
20 MBAttachments200 MB
NoOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
NoSMTP❌ Requires 3rd party
NoIMAP❌ Requires 3rd party
NoPOP3❌ Requires 3rd party
❌ See blog postAPIYes
NoE2EE No
NoOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

Intercom

Intercom is a closed-source email service. Their website says: The only AI customer service solution you need

Intercom is a closed-source email service.
Photograph by Forward Email
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Closed-source

Mimecast

Mimecast is a closed-source email service. Their official description reads: Email & Collaboration Security

Mimecast is a closed-source email service.
Photograph by Forward Email
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Compare Intercom with 78 email services