• TLS Outbound

    created using Minimalist template
    published by SendGrid2014
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EMAIL SECURITY

securing connections

At SendGrid, email security is at the core of our business. Recent revelations about dragnet nation state surveillance have raised awareness about email security to new levels.   With that in mind we are ensuring that ALL email sent via SendGrid will utilize opportunistic encryption using TLS.

8M

3.4M

70%

CN Mismatch

22%

9%

76% ISPs Support TLS 

96% of failures occur due to

65%

Self Signed

Expired

global domains

unique mail servers 

secure connections   

Those 8 million domains presented 3.4 million unique mail exchangers, 2,614,380 (76.1%) of which claimed to support TLS. We attempted to connect to all of them, and failed to successfully negotiate a trusted TLS connection with 223,800 of them (8.5%)