Skip to content

Microsoft 365 integration

The same signature in every Outlook, without asking anyone to do anything.

Your Microsoft 365 directory syncs through Microsoft Graph. The signature is served by the Soniako add-in, which you deploy once for the whole organisation from the admin center. After that it keeps itself up to date.

Try it without an account Request a demo

How the signature gets into Outlook

  1. Connect the directory — An admin lets Soniako read the directory through Microsoft Graph. Users, groups and profile photos are imported; groups become teams.
  2. Deploy the add-in — The Soniako add-in is deployed once — to the whole organisation or to selected groups — from the Microsoft 365 admin center (Integrated apps).
  3. Build the signature — You assemble the template in the block editor. Fields fill in from each person’s record and the signature is compiled on the server.
  4. Inserted on every new message — When an employee starts a new message, the add-in fetches their compiled signature and inserts it. If they switch the From address, the signature follows.

Add-in or transport rules?

There are two ways to manage signatures in Microsoft 365. Exchange transport rules append text on the server, after sending. An add-in inserts the signature in Outlook while the message is written. Soniako uses an add-in.

Exchange transport rules compared with the Outlook add-in
Transport rulesSoniako add-in
Visible while composingNoYes
Placed under the message (not at the bottom of the thread)NoYes
Personalised per personLimitedYes, from the directory
Banner targeted by team and dateNoYes
No mail flow reroutedYesYes

For the full comparison, see our guide to deploying signatures in Outlook and Microsoft 365.

The permissions we ask for

For directory sync, Soniako asks for three Microsoft Graph permissions, all read-only: User.Read.All (users and their details), Group.Read.All (groups) and GroupMember.Read.All (who belongs to which group). None of them gives access to email content.

The add-in signs in with the user’s own Microsoft account and fetches only that user’s signature.

A banner per team, with numbers

On top of the signature you schedule a clickable banner per team and per period. Impressions, clicks and click rate are measured per campaign, day by day.

Know who actually has the right signature

The console shows, person by person, the assigned signature, when it was last built and its deployment status. Every directory sync is logged.

Directory sync, deployment tracking and sync history: Pro plan.

Microsoft 365 questions

Which versions of Outlook does it work with?

The add-in runs in Outlook desktop and Outlook on the web, which support add-ins that activate on compose. The Outlook mobile app is not covered by the add-in today.

Does every employee have to install the add-in?

No. An admin deploys it once from the Microsoft 365 admin center, to the whole organisation or to groups, and it appears in everyone’s Outlook.

Do we have to change Exchange mail flow?

No. Soniako uses no transport rule and routes no email through its servers. The signature is inserted in Outlook, before sending.

What happens when someone changes role?

Their directory record changes and the signature is rebuilt. The add-in picks up the new version on the next message.

What if part of the company is on Google Workspace?

Both environments are managed from the same console, with the same signature template.

Further reading

Open the console. You’ll see it faster than you’ll read it.

A demo console that is already filled in: editor, campaign, statistics. Or leave your work email and we’ll help with the first rollout.

Create my signature

Free up to 5 people. No credit card.

We use your address only to contact you about Soniako. We never sell it or share it.