Cisco Secure Email Defense vs AT&T Comparison (2025)

What are the differences between Cisco Secure Email Defense and AT&T?

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Published
4/1/25
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20 facts in comparison
Cisco Secure Email Defensevs.AT&T

Cisco Secure Email Defense

Advanced protection to safeguard your inboxes
"Advanced protection to safeguard your inboxes"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Test SSL serveru Qualys SSL Labs
vs.

AT&T

AT&T Mail is now Yahoo Mail
"AT&T Mail is now Yahoo Mail"
  • Hardenize Test
  • Internet.nl Site Test
  • Internet.nl Mail Test
  • Mozilla HTTP Observatory Grade
  • Test SSL serveru Qualys SSL Labs
Requires you to talk to a sales teamCeny$5/mo
UnknownStorage5000 GB
100 MBAttachments25 MB
ŽádnýOpen-SourceŽádný
ŽádnýSandboxed Encryption Žádný
ŽádnýUnlimited DomainsŽádný
ŽádnýUnlimited AliasesŽádný
ŽádnýTTI Žádný
❌ Requires 3rd partySMTP❌ No longer supported
❌ Requires 3rd partyIMAP❌ No longer supported
❌ Requires 3rd partyPOP3❌ No longer supported
AnoAPIŽádný
ŽádnýE2EE Žádný
ŽádnýOpenPGP Žádný
ŽádnýWKD Žádný

Email Service Screenshots

Closed-source

Cisco Secure Email Defense

Cisco Secure Email Defense is a closed-source email service. Their official description reads: Advanced protection to safeguard your inboxes

Cisco Secure Email Defense is a closed-source email service.
Photograph by Forward Email
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Closed-source

AT&T

AT&T is a closed-source email service. According to their website: AT&T Mail is now Yahoo Mail

AT&T is a closed-source email service.
Photo by Forward Email
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Compare Cisco Secure Email Defense with 79 email services