Microsoft 365 signature manager
Email Signature Management for Microsoft 365 (Office 365) & Outlook
Signatures for Office 365 that update themselves. Synced from Microsoft Entra ID and added in Outlook desktop, web and mobile, with no mail rerouting.
5,000+ organizations500K+ users4.8 /5
- Microsoft AppSource
SOC 2 Type II
GDPR
The problem
Why native Microsoft 365 signatures break
Outlook signatures and Exchange transport rules were never built for company-wide signatures. Here is where they fall short, and why IT teams centrally manage email signatures in Office 365 instead.
Invisible while writing
Transport rules add the signature after you hit send, so nobody can check it.
Same for every department
One Exchange rule per group, edited by hand every time something changes.
Images arrive as attachments
Logos and banners show up as files, not inline.
Buried under the thread
Disclaimers land at the very bottom, below every earlier message.
How it works
How to automate email signatures in Office 365
From AppSource to every Outlook in minutes. Connect your Microsoft 365 tenant once and BulkSignature keeps every signature up to date automatically.
- About 5 minutes to connect
- Global admin required
On Microsoft AppSource
Add BulkSignature from AppSource
Find BulkSignature on Microsoft AppSource, select Get it now and sign in with your admin account.
- Use a Global Administrator or Privileged Role Administrator account
On Microsoft’s sign-in page
Grant admin consent for your tenant
Review the permissions, tick Consent on behalf of your organization and select Accept. One approval covers the whole tenant.
- No passwords are shared with BulkSignature
- Revoke access anytime in Microsoft Entra ID
In BulkSignature
Sync your Entra ID attributes
Name, job title, department, office, phone, mobile and photo sync automatically from Microsoft Entra ID.
New hires and title changes sync automatically.
In BulkSignature
Build the template and assignment rules
Design your templates, then assign them by group, department or office. Preview as anyone before going live.
- Add a campaign banner for every group or just one
Done
Deploy client-side to every Outlook
Signatures appear inside Outlook desktop, web and mobile while people write. No rerouting, no Exchange connectors.
Compare
Native Microsoft 365 signatures vs BulkSignature
Outlook signatures can’t be controlled. Exchange rules can’t be seen. BulkSignature gives you both.
| Capability |  Microsoft 365Outlook signatures + Exchange rules |  Managed centrally, added in Outlook |
|---|---|---|
| Central control | Only through Exchange rules | Admins design and lock templates |
| Directory fields | Basic fields, Exchange rules only | Synced from Microsoft Entra ID |
| Position under reply | Exchange rules add it below the whole thread | Directly under the latest reply |
| Visible while composing | Not with Exchange rules | Yes, right inside Outlook |
| Images | Often show up as attachments | Hosted images, no attachments |
| Banners with tracking | Not available | Scheduled banners with click tracking |
| Department rules | One Exchange rule per group | By user, group, department or role |
| Mobile | Set by hand on each phone | Same signature on iOS and Android |
14-day free trial · No long-term contracts
Microsoft 365 Features
Everything Microsoft 365 teams need for signature control
Email signature software for Office 365 with one admin console: directory sync, group targeting, Outlook on every device and tracked campaigns.
01Directory
Synced from Microsoft Entra ID
Names, job titles, departments, phone numbers and office locations come straight from Microsoft Entra ID. When someone is promoted or moves teams, their signature updates automatically. No spreadsheets, no tickets.
02Targeting
Target by group, department or brand
Assign signatures by Microsoft 365 group, security group, department, office or brand. Sales gets the demo link, Legal gets the disclaimer, and each brand in your tenant keeps its own template.
03Outlook
Works in Outlook on every device
Signatures appear in Outlook for Windows, Mac, the web, iOS and Android. People see them while writing, and every reply looks the same on a phone as on desktop.
04Campaigns
Campaign banners on every email
Schedule banners for webinars, launches or hiring and show them to chosen teams. Track views and clicks, and swap a banner company-wide in one click.
05Compliance
Disclaimers by region and department
Apply the approved legal text for the EU, US or UK, or per department. Disclaimers sit under the latest reply, so recipients actually see them.
06Analytics
Signature and banner analytics
See views, clicks and click-through rate for every banner and link, by team or campaign, without a separate tracking tool.
Deployment and security
Secure by design for Microsoft 365 tenants
BulkSignature adds signatures inside Outlook, so your mail never leaves Microsoft 365 or passes through our servers.
ADD-IN
Client-side Outlook add-in
Deployed once from the Microsoft 365 admin center to every user.
MAIL FLOW
No Exchange connectors or transport rules
Mail flow stays exactly as it is today. Nothing is rerouted.
PRIVACY
No access to email content
We read directory fields from Microsoft Entra ID, never message bodies.
COMPLIANCE
SOC 2 Type II and GDPR
Independently audited controls and GDPR-compliant data processing.
Built for 300+ seat rollouts with group and OU targeting.
Read our security overviewWho uses it
Built for every team that touches a signature
IT admins
Deploy once from the Microsoft 365 admin center, sync user details from Entra ID and stop answering signature tickets.
See how IT teams use it
Marketing
Keep every signature on-brand and run tracked banner campaigns across the company without asking IT.
Explore banner campaigns
Compliance
Apply approved disclaimers by region or department and know every outgoing email carries the right text.
Explore legal and compliance
HR
New hires, promotions and team moves update automatically, so titles and contact details are always accurate.
Explore employee lifecycle
Customer Reviews
Teams that stopped chasing signatures.
out of 5, based on 11 reviews on G2
Read all reviews on G2 (opens in a new tab)“…we can freely change the signature for all, for certain groups or for individuals with ease.”
Per I.
Head of IT and Information Security, Non-profit
“I’ve tried them all, and this was the easiest to use and the cheapest.”
Joseph E.
Business Development, Textiles
“Great value for the money, exactly what we needed.”
Johannes W.
Head of IT, Computer Software
“Very positive, a great product at the price point and very easy to use.”
Tim M.
Deputy Chief Operating Officer, Education
Frequently asked Questions
Absolutely. Once your Microsoft 365 integration is configured, signatures can be applied consistently across desktop, web, and mobile versions of Outlook.
Related
Keep exploring BulkSignature
Integrations, comparisons and setup guides for Microsoft 365 admins.
01
Also on Google Workspace?
Centralized email signatures for Microsoft 365 and Google Workspace, managed from one console.
02
Comparing tools?
See how BulkSignature compares with CodeTwo and Exclaimer for Microsoft 365.
Give every Outlook signature a professional upgrade.
Free for 14 days. No credit card, no long-term contract.
5,000+ organizations500K+ users4.8 /5
- SOC 2 Type II
- GDPR
- Microsoft AppSource