DuoCircle vs Amazon Simple Email Service (SES) Comparison (2025)

What are the differences between DuoCircle and Amazon Simple Email Service (SES)?

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 DuoCircle.

Email Service Comparison

20 facts in comparison
DuoCirclevs.Amazon Simple Email Service (SES)

DuoCircle

Protect Email Against Phishing, Spam and Malware
"Protect Email Against Phishing, Spam and Malware"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
vs.

Amazon Simple Email Service (SES)

Get reliable, scalable email to communicate with customers at the lowest industry prices
"Get reliable, scalable email to communicate with customers at the lowest industry prices"
  • 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$X/mo; varies, using shared IP's from SES are known to have negative effect on deliverability
Requires 3rd partyStorageNo Amazon Simple Email Service (SES) does not support storage
50 MBAttachments10 MB
NoOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
❌ Requires 3rd partySMTPYes
❌ Requires 3rd partyIMAPNo
❌ Requires 3rd partyPOP3No
YesAPIYes
NoE2EE No
NoOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

DuoCircle

DuoCircle is a closed-source email service. Their official description reads: Protect Email Against Phishing, Spam and Malware

DuoCircle is a closed-source email service.
Photograph by Forward Email
Visit Website
Closed-source

Amazon Simple Email Service (SES)

Amazon Simple Email Service (SES) is a closed-source email service. Their website says: Get reliable, scalable email to communicate with customers at the lowest industry prices

Amazon Simple Email Service (SES) is a closed-source email service.
Photo by Forward Email
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Compare DuoCircle with 78 email services