OOPSpam vs DuoCircle Comparison (2025)

What are the differences between OOPSpam and DuoCircle?

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 OOPSpam.

Email Service Comparison

20 facts in comparison
OOPSpamvs.DuoCircle

OOPSpam

Automate your Spam and Abuse Detection
"Automate your Spam and Abuse Detection"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Qualys SSL Labs SSL Server Test
vs.

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
$49/moPricingRequires you to talk to a sales team
Requires 3rd partyStorageRequires 3rd party
UnknownAttachments50 MB
NoOpen-SourceNo
NoSandboxed Encryption No
NoUnlimited DomainsNo
NoUnlimited AliasesNo
NoTTI No
❌ Requires 3rd partySMTP❌ Requires 3rd party
❌ Requires 3rd partyIMAP❌ Requires 3rd party
❌ Requires 3rd partyPOP3❌ Requires 3rd party
YesAPIYes
NoE2EE No
NoOpenPGP No
NoWKD No

Email Service Screenshots

Closed-source

OOPSpam

OOPSpam is a closed-source email service. Their official description reads: Automate your Spam and Abuse Detection

OOPSpam is a closed-source email service.
Screenshot by Forward Email
Visit Website
Closed-source

DuoCircle

DuoCircle is a closed-source email service. According to their website: Protect Email Against Phishing, Spam and Malware

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

Compare OOPSpam with 78 email services