How to Add a Signature in Outlook (Every Version, Step by Step)

• 25 June 2026
• by: Hannah Wexford
• in: Email services
• Tags: email setup, email signature, outlook signature, outlook tips
• note: no comments

If you’ve ever sent an email and thought, “I really should have a proper sign-off down there,” you’re in exactly the right place. Adding a signature in Outlook sounds like one of those fiddly tech chores, but I promise it’s friendlier than it looks. By the end of this guide, you’ll have a clean, professional signature that adds itself to your emails automatically, no copy-pasting required.

The slightly confusing part is that there isn’t just one Outlook anymore. There’s the classic Outlook desktop app, the new Outlook for Windows, Outlook on the web, and Outlook mobile. Each one tucks the signature setting in a slightly different spot. Don’t worry, we’ll walk through every single one together, so wherever you’re working, you’re covered. Let’s do this.

Key Takeaways
• You can add a signature in Outlook on every version: classic desktop, new Outlook, web, and mobile.
• Set a default signature so it auto-adds to new messages and replies, no manual work each time.
• Keep it clean: name, title, company, phone, and a professional email address.
• The big gotcha: in classic desktop Outlook, signatures are stored per-device, so they don’t follow you to another computer or your phone.
• New Outlook and the web version sync more reliably across devices.

What makes a good email signature?

Before we touch any settings, let’s talk about what actually goes into a signature, because a cluttered one is worse than none at all.

A strong, professional signature usually includes:

• Your full name (the way you’d want it on a business card)
• Your title or role
• Your company or brand name
• A phone number people can actually reach you on
• A professional email address on your own domain
• Optional extras: a logo, a website link, or one social link

The golden rule? Keep it clean. You don’t need five phone numbers, three quotes, and a rainbow of colors. A tidy signature reads as confident and credible. A messy one reads as, well, messy. Pick the details that matter and let the rest go.

How do I add a signature in classic Outlook desktop?

This is the traditional Outlook desktop app many of us grew up with. Here’s the path, step by step:

1. Open Outlook and click File in the top-left corner.
2. Choose Options, then click Mail in the left menu.
3. Click the Signatures button.
4. Under the signatures window, click New, give your signature a name (something like “Main” or “Work”), and click OK.
5. Type your signature in the editing box. Use the formatting toolbar to set the font, size, bold, and add links or a logo if you’d like.
6. On the right, under Choose default signature, pick your email account and set your signature for New messages and for Replies/forwards.
7. Click OK to save.

That’s it! From now on, every new email (and reply, if you set it) will carry your signature automatically. Setting those default signature options is the magic step that saves you from pasting it in by hand every time.

Here’s something almost nobody tells you, and it trips up so many people: in classic desktop Outlook, your signature lives on that one computer only. It’s stored locally on the machine where you created it. So if you switch to a different PC, or open your email on your phone, your signature seems to vanish into thin air. It hasn’t been deleted, it just never traveled with you. The fix is simple once you know it: you set the signature separately on each device. The good news is that new Outlook and Outlook on the web sync more reliably, so signatures created there tend to follow you across devices. But classic desktop? That one’s per-machine, every time.

How do I add a signature in the new Outlook for Windows?

The new Outlook for Windows has a cleaner, more modern layout, so the path is different. Here’s how:

1. Open new Outlook and click the Settings gear icon (top-right).
2. Go to Accounts, then select Signatures.
3. Click + New signature, give it a name, and type or paste your signature into the editor.
4. Format it with the toolbar (font, links, logo).
5. Use the dropdowns to set your default signature for new emails and for replies and forwards.
6. Save your changes.

Done. Because new Outlook is more cloud-connected, your signature is more likely to be available across your devices, which is a lovely improvement over the classic app.

How do I set up a signature in Outlook on the web?

If you check your mail in a browser, here’s the route for Outlook on the web:

1. Sign in to Outlook on the web and click the Settings gear (top-right).
2. Go to Mail, then Compose and reply.
3. Find the Email signature section.
4. Click + New signature, name it, and type your signature in the box.
5. Format as you like, then set the default signature dropdowns for new messages and replies.
6. Click Save.

Because this lives in your account online, your web signature stays put no matter which computer you log in from. Handy.

How do I add a signature on Outlook mobile?

On your phone or tablet, the Outlook mobile app keeps things simple:

1. Open the Outlook app and tap your profile icon or the menu (top-left).
2. Tap the Settings gear at the bottom.
3. Tap Signature.
4. Type your signature. (Mobile signatures are usually plain text, so keep it short and sweet.)
5. It saves automatically.

On mobile, I’d recommend a trimmed-down version, just your name, title, and a phone number. Tiny screens and giant signatures don’t mix.

Signature setup by Outlook version (quick reference)

Here’s a cheat sheet you can glance at any time:

Outlook version	Where to find signatures	Syncs across devices?
Classic desktop	File > Options > Mail > Signatures	No, stored per-device
New Outlook (Windows)	Settings > Accounts > Signatures	Yes, usually
Outlook on the web	Settings > Mail > Compose and reply	Yes
Outlook mobile	Settings > Signature	Yes, plain text

Can I have more than one signature?

Absolutely, and this is one of my favorite tricks. Outlook lets you create multiple signatures for different situations. You might want:

• A full signature for new emails to clients (name, title, company, phone, logo).
• A short signature for quick replies (just your name and email).
• A separate signature for each account, if you run both a work and a personal address.

Just create each one with its own name in the signatures area, then assign which signature goes with which account and whether it’s used for new messages or replies. When you’re composing an email, you can also swap signatures manually: in the message window, look for the Signature option (usually under the Insert menu or Message ribbon) and pick the one you want. Flexible and tidy.

How do I make my signature look professional?

A few gentle pointers I share with everyone:

• Match your fonts to one or two simple, readable choices. Skip the decorative ones.
• Keep colors minimal, your brand color plus black or gray is plenty.
• Size your logo small, so it doesn’t push your text around or balloon your email.
• Use a real, branded email address. This one matters more than people realize.

That last point is worth pausing on. A signature that says `[email protected]` instantly reads as more trustworthy than a generic free address. It tells the reader you’re an established business, not someone working out of a spare inbox. Your signature is often the first impression of your professionalism, so the email address behind it does a lot of quiet heavy lifting.

A professional signature starts with a professional email address

Here’s where it all comes together. The cleanest, most polished signature in the world still leans on the address it’s attached to. If you’re sending from a generic free account, even a beautiful signature loses a little credibility.

That’s exactly what DarazHost business email is built for. With DarazHost, you get email on your own domain, so you’re sending from `[email protected]` instead of something generic. It plugs straight into Outlook via IMAP, so you can keep using the app you already know, and there’s webmail too for when you’re away from your desk. You get reliable delivery and 24/7 support if you ever hit a snag. A great signature and a professional address are a matched set, and DarazHost takes care of the address half so your signature actually lands the way it should.

How do I set a default signature so it adds automatically?

This is the step that turns your signature from “a thing I forget to add” into “a thing that just happens.” In each version of Outlook, when you’re in the signatures area, look for the default signature settings, usually two dropdowns:

• New messages — your signature for fresh emails you start.
• Replies/forwards — your signature (often a shorter one) for responses.

Pick a signature for each, save, and you’re set. Outlook will now add the right signature on its own, every single time. No more “oops, forgot my sign-off” moments.

Frequently asked questions

Why did my signature disappear when I switched computers? Because in classic desktop Outlook, signatures are stored on that specific computer. They don’t sync to other PCs or your phone. The fix is to set your signature again on each device. New Outlook and the web version handle syncing better, so signatures created there usually travel with you.

Can I add a logo or image to my Outlook signature? Yes. In the signature editor (on desktop and web), use the image icon in the toolbar to insert a logo. Keep it small and lightweight so it doesn’t bloat your emails or shift your text around. On mobile, signatures are typically plain text only.

Why isn’t my signature showing up on new emails? Most likely you created the signature but didn’t set it as the default for new messages. Go back into the signatures area and pick your signature in the New messages dropdown, then save.

Can I use different signatures for different email accounts? Definitely. When you set up your default signature, you choose which account each signature applies to. So your work address and personal address can each have their own. You can also switch signatures manually while composing an email.

Do I need a paid email address to have a good signature? Not strictly, but a professional email address on your own domain (like `[email protected]`) makes your whole signature far more credible. A branded address signals you’re an established business, which a free generic address can’t quite do.

You’ve got this

And there you have it, a signature in every version of Outlook, set to add itself automatically, looking clean and professional. Once you’ve got it dialed in, you’ll wonder how you ever signed off without it.

Just remember the one quirk that catches everyone: classic desktop Outlook stores your signature on that computer only, so set it up wherever you work. And if you want your signature to truly shine, anchor it to a professional email address on your own domain. That little detail makes a big difference. Now go send something with confidence!