Is Outlook for Mac different from Outlook for Windows?

Yes. The Outlook Mac and Windows apps have different interfaces and different signature settings locations. This guide covers Mac only. For Windows, see our Outlook 365 Desktop guide.

Does Outlook for Mac support HTML signatures?

Yes, and it handles HTML better than the Windows version in many cases. DropSig templates work well in Outlook for Mac.

How do I edit an existing signature in Outlook for Mac?

Go to Outlook → Settings → Signatures. Click the signature you want to edit in the list, then make changes in the right panel. Changes save automatically.

Can I have multiple signatures in Outlook for Mac?

Yes. Click the '+' button in the Signatures preferences to create multiple signatures. Use the 'Default signatures' section or manually select a signature when composing.

How to Add an Email Signature in Outlook for Mac

Outlook for Mac has a different interface from Outlook on Windows, with its own Signatures settings panel. If you're using a Mac with Microsoft 365 or a standalone Outlook license, follow these steps to set up your signature.

Before you start

You'll need a signature to paste. Already have one? Skip to step 1.

Create your signature first →

Step-by-step setup

Open the Outlook app on your Mac. In the menu bar, click "Outlook" → "Settings" (or "Preferences" on older versions).

In the Outlook Preferences window, click "Signatures".

Click the "+" button to create a new signature. A new entry will appear in the signature list.

Double-click the new signature name (it may default to "Untitled") and rename it to something descriptive like "Work".

In DropSig, click "Copy Signature" to copy your formatted signature.

Click in the right-hand editing panel in the Signatures window and paste (Cmd+V). Your signature will appear with its formatting.

Pro tip: Outlook for Mac renders HTML more reliably than Outlook for Windows. Most DropSig templates paste and display correctly here.

At the bottom of the Signatures window, use the "Default signatures" dropdowns to set your new signature for new messages and replies.

Close the Preferences window. Open a new email compose window to verify your signature appears.

Common issues

Signature not appearing in new emails

Make sure you set a default signature using the "Default signatures" section at the bottom of the Signatures preferences. Without this, signatures won't appear automatically.

Read the full fix →

Image is showing as an attachment instead of inline

This can happen if Outlook for Mac converts linked images to attachments. Try using the latest version of Outlook for Mac, which handles inline images better.

Can't find Preferences in the menu

On newer versions of macOS with Outlook, the menu item may say 'Settings' instead of 'Preferences'. Look for it under the 'Outlook' menu in the top-left menu bar.

FAQ

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Last verified: March 2026