Get started
Signing up for a Signature 365 account
Create a Signature 365 trial account and choose the data region during registration.
Creating a new Signature 365 subscription
Convert your trial into a paid Signature 365 subscription with billing, user count, and address details.
How to setup Signature 365
Set up Signature 365 with Microsoft 365 integration, Outlook add-ins, agents, and sent items updates.
Signature 365 system requirements
Check supported Microsoft 365 plans, directories, servers, and Outlook clients for Signature 365.
Signature 365 required permissions
Review the Microsoft 365 and platform permissions required before you set up Signature 365 or enable optional features.
Applying signatures to users and groups
Create priority-based rules to apply Signature 365 templates to users, groups, or attribute-based selections.
Adding additional teammates to manage Signature 365
Invite teammates and assign owner, administrator, or editor access in the Signature 365 portal.
Using two-factor authentication with a Signature 365 admin account
Enable two-factor authentication individually for Signature 365 administrator and editor accounts.
Enabling single sign-on (SSO) for Signature 365 management accounts
Enable single sign-on for Signature 365 management accounts from each user's profile settings.
How to use the Signature 365 migration wizard
Run the Signature 365 migration wizard on your Email Signature Manager server after Microsoft 365 integration.
Migrating to Signature 365 from Email Signature Manager
Plan and complete a move from Email Signature Manager to Signature 365, including prerequisites, migration, and rollout steps.
What types of messages are supported
See which message types Signature 365 can sign and which exceptions are excluded.
Signature 365 SMTP host list and IP whitelist
Find regional SMTP hosts and IP addresses to whitelist for Signature 365 server-side mail flow.
Signature 365 reliability and security
Explore Signature 365 security, certifications, availability, data protection, and Microsoft 365 integration safeguards.
Signature 365 product roadmap
View the Signature 365 product roadmap and track planned features on the product updates site.
How to uninstall Signature 365 from your Microsoft 365 tenant
Remove Signature 365 by disabling transport rules, connectors, and Outlook add-ins in the correct order.
User guides
Browse user guides for Signature 365 add-ins across Outlook desktop, web, and mobile.
Service information
Browse service information covering security, privacy, networking, permissions, and platform support for Signature 365.