Mimecast vs SimpleLogin Comparison (2026)

What are the differences between Mimecast and SimpleLogin?

Forward Email Team
Written by
Forward Email TeamVerified
Published
1/1/26
Time to read
Less than 5 minutes
We recommend Forward Email as the best alternative to Mimecast.

Email Service Comparison

20 facts in comparison
Mimecastvs.SimpleLogin

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
vs.

SimpleLogin

Receive and send emails anonymously
"Receive and send emails anonymously"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
See Mimecast plans (requires you to talk to a sales team) (according to a Reddit thread it may cost upwards of +$1000-2000 per month)Pricing$4/mo
UnknownStorageNo SimpleLogin does not support storage
200 MBAttachments25 MB
NoOpen-SourceYes
NoSandboxed Encryption No
NoUnlimited DomainsYes
NoUnlimited AliasesYes
NoTTI No
❌ Requires 3rd partySMTPNo
❌ Requires 3rd partyIMAPNo
❌ Requires 3rd partyPOP3No
YesAPINo
NoE2EE ⚠️ Opt-in
NoOpenPGP Yes
NoWKD No

Email Service Screenshots

Closed-source

Mimecast

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

Mimecast is a closed-source email service.
Screenshot by Forward Email
Visit Website
Open-source

SimpleLogin

SimpleLogin is an open-source email service. Its description from its website is: Receive and send emails anonymously

SimpleLogin is an open-source email service.
Photograph by Forward Email
Visit Website

Compare Mimecast with 78 email services