How to Add a Signature in Outlook (All Versions)

To add a signature in Outlook, open the app, go to Settings (or File → Options → Mail → Signatures in classic desktop Outlook), click New or Create, give the signature a name, build it in the editor, choose it as the default for new messages and replies, then save. The exact path differs slightly between new Outlook, classic Outlook, Outlook on the web, and the mobile app, but the idea is the same everywhere: create the signature once and set it to appear automatically. With makemysig you can design a polished, on-brand signature first and paste it straight into any of these screens.

This guide walks through the exact clicks for each version of Outlook, how to add a clickable logo and links, how to set a signature per email account, and why a signature sometimes fails to appear. By the end you will have a signature that shows up on every message and looks right wherever it is opened.

How do I add a signature in new Outlook and Outlook on the web?

New Outlook for Windows and Outlook on the web share almost the same steps. Click the gear icon to open Settings, choose Accounts → Signatures (in some versions it appears under Mail → Compose and reply). Click New signature, type a name so you can recognize it later, then build the signature in the editor box using the formatting toolbar for font, size, color, links, and images.

Below the editor you will find the default settings. Pick which signature is used for new messages and which is used for replies and forwards from the drop-down menus. These defaults are what make the signature insert itself automatically, so do not skip them. Your changes save as you go in the web version, while new Outlook has a Save button to confirm. Send yourself a quick test email to check that everything looks the way you expect.

How do I add a signature in classic desktop Outlook?

Classic Outlook for Windows keeps signatures in a different place. Open the app and go to File → Options, select Mail in the left panel, then click the Signatures button on the right. In the window that opens, click New, name the signature, and build it in the Edit signature box at the bottom.

On the right side of that same window, use the Choose default signature section to set the email account, the signature for new messages, and the signature for replies and forwards. If you manage more than one account, repeat this for each one, because Outlook assigns signatures per account. Click OK to save. For a wider look at what belongs in a signature and what to leave out, see our complete email signature guide">complete email signature guide.

How do I add a clickable logo and links?

To add an image, place your cursor in the signature editor and click the image icon, then upload your logo or insert it by web address. A logo hosted at a stable URL is the most reliable choice because it loads the same way for every recipient. Keep it small, roughly 100 to 150 pixels wide, so it complements the text rather than dominating it.

To make text or an image clickable, select it and click the link icon, then paste the destination URL. That is how you turn a plain website line into a real link or point your logo at your homepage. Because the built-in editors offer limited control over spacing and alignment, many people design the layout in a dedicated tool and paste the finished signature in. The process is similar in Gmail, and if you also use it, our guide on how to add a signature in Gmail">how to add a signature in Gmail covers the same steps there.

How do I add a signature in the Outlook mobile app?

Open the Outlook app on your phone, tap your profile icon in the top left, then tap the gear icon to open Settings. Scroll to Signature, tap it, and type your signature. If you have multiple accounts, you can set one signature for all of them or switch to per-account signatures. Tap the checkmark or back arrow to save.

The mobile signature is largely plain text and separate from the versions you set on desktop and the web, so it will not carry a logo or complex formatting reliably. Many people keep a short line on mobile and rely on their full designed signature elsewhere. If a consistent look across every device matters to you, managing the signature centrally avoids the patchwork of mismatched versions.

Why is my Outlook signature not showing up?

The most common reason is that the default settings are not set: Outlook has the signature saved but is not told to insert it, so choose your signature for both new messages and for replies and forwards. The second reason is having the signature on the wrong account, since each account carries its own. Confirm you edited the account you actually send from.

Another frequent surprise is that new Outlook, classic Outlook, the web, and mobile each store signatures independently, so setting one does not update the others. If your signature appears in one place but not another, that is expected behavior rather than a bug. And if formatting looks broken, it is usually because the signature was typed directly into the editor, where fonts and spacing can shift; pasting a designed signature avoids most of that.

Frequently asked questions

Can I have more than one signature in Outlook?

Yes. Outlook lets you create multiple signatures and switch between them. Add each one with New in the Signatures area, then choose which is the default for new messages and replies. While writing an email, you can also swap the signature manually from the Signature menu on the ribbon or toolbar.

Why does my Outlook signature look different for recipients?

Email apps render formatting differently, so a signature can shift depending on where it is opened. Keep the design simple, use web-safe fonts with fallbacks, host your logo at a stable URL, and send test emails to a few different accounts before you rely on it for everyday sending.

How do I add a signature with social media icons in Outlook?

Outlook has no built-in social icon feature, so you add each icon as a small linked image: insert the icon, then link it to your profile. Building the signature in a dedicated editor and pasting it in is much faster, because the icons and links arrive ready-made and correctly spaced.

Will my Outlook signature appear on replies and forwards?

Only if you set it to. In the default settings, choose your signature for replies and forwards as well as for new messages. Many people use a fuller signature on new emails and a shorter one on replies to keep long threads clean.

Build your Outlook signature with makemysig

Adding a signature in Outlook is only a handful of clicks, but a signature that looks sharp across every version and actually reinforces your brand takes a little more care. Design it once, paste it into each Outlook surface, set your defaults, and test it before you roll it out. Create a professional Outlook signature with makemysig today and paste it in with a single click.