Where to find signature settings in Outlook

Your signature lives in Outlook's settings, not in the email itself. The path depends on which version you use. In Outlook on the web (the browser version), click the gear icon in the top right, then select "View all Outlook settings." In the left sidebar, choose "Mail," then "Compose and reply." In Outlook desktop (the Windows or Mac process), go to File > Options > Mail > Signatures on Windows, or Outlook > Preferences > Signatures on Mac.

Once you reach the signature area, you will see a blank space where you can type or paste your signature text. This is where you build what appears at the bottom of every email you send — unless you turn it off for a specific message.

Key Takeaways

  • Signatures are stored in Outlook settings, not in individual emails, and you reach them through File > Options on desktop or the gear icon on the web.
  • You can create multiple signatures and choose which one to use for each email, or set a default that appears automatically.
  • Outlook lets you add formatting, links, and images to your signature, though plain text works on all devices.
  • If you do not want a signature on a particular email, you can delete it from that message before sending without affecting your saved signature.

Creating your first signature

Type or paste your signature text into the blank box. Keep it short — typically your name, title, phone number, and company name. Outlook does not limit length, but long signatures can annoy recipients, especially on mobile devices where they take up screen space.

If you want to add formatting, highlight the text and use the bold, italic, or underline buttons above the text box. You can also change the font or font size. For a professional look, stick to one font and avoid bright colors. If you paste text from another program (like Word or a website), Outlook may preserve the original formatting, which can look messy — paste as plain text instead by right-clicking and choosing "Paste Special" > "Unformatted Text."

Adding images or links to your signature

To insert an image, click the image icon in the signature editor. This opens a file browser where you select a picture from your computer. Use a small image — logos work better than large photos. Keep the file size under 50 KB so it does not slow down email delivery.

To add a link, highlight the text you want to turn into a link, then click the link icon. Paste the full web address (starting with https://) into the dialog box. Common links in signatures are company websites, LinkedIn profiles, or email addresses. If you link to your email address, use the format mailto:yourname@company.com so clicking it opens a reply.

Setting up multiple signatures for different accounts or purposes

If you have more than one email account in Outlook, you can create a different signature for each one. In the signature settings, look for the dropdown menu labeled "Email account" (desktop) or "Select account" (web). Choose the account, then create a signature for it. Repeat for each account. This way, your work email signature is different from your personal one.

You can also create multiple signatures for the same account — for example, one formal signature for client emails and one casual one for internal messages. Name them clearly: "John Smith - Client" and "John Smith - Internal." When you compose a new email, a dropdown menu lets you pick which signature to insert. If you want one to appear automatically, mark it as default in the settings.

Making a signature appear automatically on every email

In the signature settings, find the section labeled "Default signature" or "New messages." Select which signature should appear in every new email you write. On the web version, you can set different defaults for new messages and for replies — some people use a full signature on new emails but a shorter one on replies to save space.

Once you set a default, that signature will appear in the compose window every time you start a new email. You can still delete it or swap it for a different one before sending — the default just saves you from having to insert it manually each time.

Removing or editing an existing signature

To change a signature you already created, go back to the signature settings, find it in the list, and edit the text directly in the box. Click "Save" when you are done. The change takes effect on your next email.

To delete a signature entirely, select it in the list and click the delete button (usually a trash icon or a minus sign). If it was your default, Outlook will ask you to choose a new default before you can save. Deleting a signature does not affect emails you already sent — it only stops it from appearing on future emails.

Troubleshooting signatures that do not appear

If your signature is not showing up, first check that you set it as default. Go back to signature settings and confirm the default is selected. If it is, try closing and reopening Outlook — sometimes the process needs to refresh to display the change.

If you are using Outlook on the web and the signature still does not appear, clear your browser cache and cookies, then log back in. On desktop, try restarting the process. If you recently added an image to your signature and it is not displaying, the image file may have moved or been deleted — go back to signature settings and re-insert the image from its current location.

Frequently Asked Questions

Can I have a different signature for replies than for new emails?

On Outlook on the web, yes — the settings let you set separate defaults for new messages and replies. On desktop, you can only set one default, but you can manually swap signatures when replying if you want a shorter version. Many people use a full signature on new emails and delete it from replies to keep the conversation thread shorter.

What happens to my signature if I change my password?

Your signature is stored separately from your password and is not affected by password changes. It will remain exactly as you left it. The same applies if you change your account settings or update your profile information — your signature stays the same unless you edit it directly in the signature settings.

Can I use HTML code in my signature?

On Outlook on the web, you can switch to HTML editing mode by clicking the three dots in the signature editor and selecting "Edit in HTML." On desktop, this option is not available in the standard interface, but you can paste HTML-formatted text and Outlook will render it. For most users, the visual editor is simpler and safer — HTML mistakes can break your signature's appearance.

Does my signature appear the same on all devices?

Mostly, but not always. Plain text signatures look identical everywhere. Signatures with images, colors, or special fonts may display differently on phones, tablets, or older email clients. If you want your signature to look professional on all devices, stick to a straightforward font, one color, and a small image if any. Test it by sending yourself an email and viewing it on your phone.

Can I remove my signature from a single email without deleting it?

Yes. When you compose an email, your default signature appears automatically. Before you send, straightforward select and delete the signature text from that email. The signature stays saved in your settings and will appear on your next email. This is useful when sending to someone who has already seen your signature or when the email is very short.