TUTORIAL

How to Add an Email Signature in Outlook: New Outlook, Classic and the Web

Outlook comes in several versions, and the signature screen is in a different place in each. Find out which one you have, follow the steps for it, and paste a signature that is built the way Outlook on Windows draws email, so the layout survives.

WHAT THIS ADDSOutlook signature guides usually describe one version and leave readers on another version stuck. This one starts with how to tell which Outlook you have, gives Microsoft's steps for each, and explains, with sources, why classic Outlook squares off round photos and how to design around it.

Make your Outlook signatureDownload the Outlook signature setup sheet (PDF)

First, which Outlook do you have?

Microsoft's help page on adding an email signature in Outlook covers new Outlook for Windows, classic Outlook for Windows, Outlook on the web and Outlook.com, with a separate page for Outlook for Mac. The steps differ, so start by working out which one is in front of you:

  • Classic Outlook for Windows has a File tab, and under it, Options. If you can click File, Options, you have classic.
  • New Outlook for Windows looks much like Outlook on the web, with a Settings gear at the top right and no File, Options route.
  • Outlook on the web is the same screen in a browser, either through a work account or Outlook.com.

Microsoft's page has a practical tip: if the steps for new Outlook don't match your screen, you are probably not on new Outlook yet, so use the classic steps.

Build the signature first

1. Find out which Outlook you have

Use the checks above.

2. Build and copy the signature

Outlook's signature editor can format text and insert a picture, but laying out a photo beside your details with a coloured divider is awkward there. Our free email signature generator does the layout for you: fill in your details, choose one of four templates and an accent colour, and press Copy signature. The page also has install steps for each Outlook under the preview.

New Outlook and Outlook on the web

3. Open Signatures

Microsoft's steps for new Outlook: select Settings, then Accounts, then Signatures. If more than one account is added, choose the one the signature is for. Select Add signature and give it a distinct name.

4. Paste and set the defaults

Paste into the editing box below the name. Use the checkboxes at the bottom to apply the signature to new messages, and to replies and forwards; or leave them blank and add the signature by hand when you write. Select Save.

To add a saved signature while writing, Microsoft's page says to use Signature in the Insert group on the Message tab. To change one later, go back to Settings, Accounts, Signatures and select Edit signature next to it.

Classic Outlook for Windows

5. Open Signatures, paste and save

In classic Outlook, the route is File, Options, Mail, Signatures. Select New, name the signature, and paste it into the Edit signature box. On the right, choose the email account and the signature to use for new messages and for replies and forwards. Select Save, then OK.

If you'd rather add a logo inside Outlook, Microsoft describes opening a new message, choosing Signature, then Signatures, selecting the signature and using the Image button to insert the file, then right-clicking the picture and choosing Picture to set its size. A pasted signature from the generator already has the picture in place, as long as it comes from a public https address.

6. Send a test

Send one email to an address on another service, such as Gmail, and look at it on a computer and on a phone.

New Outlook / webClassic OutlookWhereSettings, AccountsFile, Options, MailCreateAdd signatureNewPaste intoThe editing boxEdit signature boxDefaultsCheckboxes belowDrop-downs on the rightFinishSaveSave, then OKRounded photo cornersShownShown square
The same job, in two places. Microsoft's help page has both.

Why classic Outlook changes some designs

Classic Outlook on Windows doesn't draw email the way a web browser does. Microsoft documented this when it made the change: its article on Word 2007 HTML and CSS rendering capabilities in Outlook 2007 explains that Outlook uses Word to display HTML email, with its own, narrower set of supported HTML and CSS. Later versions of classic Outlook kept that approach, which is why designers still plan around it.

Two practical effects for signatures, both tracked by the email support database Can I email:

  • No rounded corners. Rounded corners (the CSS property border-radius) are listed as unsupported in Outlook for Windows from 2003 to 2019. A photo made round with CSS appears square there. If a round photo matters to you, crop the image file itself into a circle on a white background.
  • Layout needs tables. Positioning tricks that work on web pages don't work in Word's engine, which is why signatures built from a simple table, with the style written on each element and fonts every computer already has, hold their layout. The generator builds its button from a table cell with a background colour for the same reason.

Our guide to signature logo sizes and file types covers which picture formats classic Outlook can show.

Phones, Macs and the rest of your inbox

Outlook for Mac has its own steps, linked from the top of Microsoft's page. Mail apps on phones commonly keep their own signature setting, so check the app you use; Gmail's app, for example, has a separate mobile signature, which our Gmail signature guide covers.

If you also want your inbox next to your customer list, Fynl's portal connects a Gmail inbox and shows it beside contacts, bookings, quotes and invoices, and each person on the team saves a signature that is added when they write from there. It works with Gmail rather than Outlook today, so it suits businesses on Google mail. The signature generator is free for everyone, whatever email you use. More free tools are on the free tools page.

DO THISCheck which Outlook you have, paste the signature into that version's Signatures screen, tick it as the default for new messages and for replies, and save. Then send a test to a Gmail address and open it in classic Outlook if anyone you write to uses it.
KEEP ITHow to tell the Outlook versions apart, the signature steps for each, and a design check for classic Outlook on Windows. Download the Outlook signature setup sheet — free PDF, no sign-up.

Questions people also ask

How do I add a signature in new Outlook?

Select Settings, then Accounts, then Signatures. Choose the account, select Add signature, name it, paste or type your signature, tick whether it goes on new messages and replies, and select Save.

How do I add a signature in classic Outlook?

Go to File, Options, Mail, Signatures. Select New, name it, paste into the Edit signature box, choose the account and defaults on the right, then select Save and OK.

How do I know if I have new Outlook or classic Outlook?

Classic Outlook has a File tab with Options. New Outlook looks like Outlook on the web, with a Settings gear at the top right. Microsoft suggests using the classic steps if the new Outlook steps don't match your screen.

Why does my round photo look square in Outlook?

Classic Outlook on Windows draws email with Word, which doesn't support CSS rounded corners. Crop the photo file itself into a circle on a white background if you need it round everywhere.

Sources

Make a signature Outlook keeps

Table layouts with inline styles, a button that renders on Windows, and install steps for each Outlook. Free, no sign-up.

Open the free signature generatorMore free tool guides