Company-safe identity
Bind verified sender addresses to the correct company, persona, brand, contact details, and approved legal text.
Enterprise Outlook signature management
The right signature for every send.
ContextSign gives Microsoft 365 administrators one governed system for sender identities, company details, signature designs, rules, testing, approval, and release. Outlook applies the approved signature for the address actually sending the message.
Built for Microsoft 365 operations
Control without a second message editor.
ContextSign owns the Outlook signature slot while the message stays in Outlook. Administrators manage policy and releases; senders can see why a signature was selected and use only approved choices.
Explainable policy
Evaluate audience, lifecycle, locale, and message context through constrained rules with predictable fallback behavior.
Controlled release
Test real render paths, collect the required approvals, publish an immutable release, and retain an auditable decision trail.