Top 10 Email Signature Solutions Compared: The 2026 Field Guide

Ten ways to manage Microsoft 365 signatures - from doing nothing centrally, through PowerShell scripts and transport rules, to the full commercial field: Atlas Ink, CodeTwo, Exclaimer, Crossware, Opensense, Letsignit, and WiseStamp. One honest table, who each option is actually for, and the three questions that collapse the shortlist fast.