[TLS] FYI: SMTP TLS Milestone

Viktor Dukhovni <ietf-dane@dukhovni.org> Mon, 15 May 2017 14:12 UTC

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Date: Mon, 15 May 2017 10:05:50 -0400
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Subject: [TLS] FYI: SMTP TLS Milestone
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In the most recent Google email transparency reports:


we see for the first time an essentially equal (and some days slightly
greater) fraction of inbound and outbound email using STARTTLS.

Between Apr 15th and May 6th the STARTTLS use ranges are:

	Outbound: 85% -- 88%
	Inbound:  84% -- 87%

At current trends crossing 90% seems plausible within a year.  Non
STARTTLS SMTP is gradually heading for extinction.