Company admin
Download Outlook manifest
Company
Design your signature once — every mailbox stays on-brand automatically.
Users
0
Add-in company code
—
Deployment
Upload
manifest.xml in the Microsoft 365 admin center under Integrated apps.Microsoft 365 & mailboxes
Staff sign in automatically with their Microsoft 365 account. Each mailbox gets its own name, job title and phone numbers from Microsoft 365, so you don't need to add anyone below.
Not connected
Companies
Super admin — create companies and manage their admin access.
Signature design
Add your logo, pick fonts and colours, and link your social accounts.
Your current signature was written as HTML. Changing any setting below replaces it with a new designed signature.
Layout & logo
PNG with a transparent background looks best.
Text & colours
Custom accent
Text colour
Details
Social media
Banner & disclaimer
A promo image under the signature, e.g. 600×150.
Optional blocks only show when the field is filled: {{#phone}}Tel: {{phone}}{{/phone}}
To: client@example.com
Subject: Quick follow-up
Hi there,
Thanks for your time today.
Best regards,
Thanks for your time today.
Best regards,
Password users
Only for people who can't use Microsoft 365 sign-in. A shared mailbox (e.g. accounts@) added here uses its own details when someone sends from it.
| Name | Job role | Phone | Mobile |
|---|