Email & SMS

Pillar

Deliverability and compliance in plain English: sender rules, SPF/DKIM/DMARC, A2P 10DLC, carrier filtering, TCPA and phone verification.

An email envelope and a text bubble passing through three gates labelled accept, permit and verify, leading to a block of mostly filled seats

Email & SMS

Deliverability and Compliance in 2026: Gmail, Yahoo and Microsoft Sender Rules, A2P 10DLC and the TCPA

Gmail, Yahoo and Microsoft sender rules, A2P 10DLC and the TCPA as one attendance system, with a dated table of what is actually in force in October 2026.

Ray Gillespie

October 6, 202619 min read