Where to find the signature settings in Outlook

Your email signature lives in Outlook's settings, not in the message 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, select View all Outlook settings, then go to Mail > Compose and reply. In Outlook desktop (the installed program on Windows or Mac), go to File > Options (Windows) or Outlook > Preferences (Mac), then find Mail > Signatures.

Once you are in the signatures section, you will see a text box where you can type or paste your signature. This is where all the changes happen — nothing you type here appears in your inbox or sent folder until you actually send a message.

Key Takeaways

  • Outlook stores signatures in settings, not in individual emails, so changes explore to all future messages automatically.
  • You can create multiple signatures and choose which one to use for each message, or set a default that appears on every email.
  • Signatures can include text, links, and images, but keep them short so they do not make your emails harder to read on phones.
  • Changes take effect when ready in Outlook on the web, but desktop versions may require you to restart the program before new signatures appear.

Creating a new signature from scratch

In the signatures section, click the plus button or New to create a signature. Outlook will ask you to name it — use something clear like "Work" or "Personal" so you can tell them apart later. Type or paste your signature text into the box below.

Keep your signature straightforward. A name, title, phone number, and one link is standard. If you add an image (like a logo), Outlook will embed it in the email, which makes the file larger and can slow down delivery. Text and links are faster and work on every device.

Setting a default signature for new emails

If you want the same signature on every message you send, set it as your default. In Outlook on the web, look for the dropdown that says New messages and select your signature from the list. In desktop Outlook, the option is usually labeled Choose default signature or appears as a dropdown next to your email account.

You can have different defaults for new messages and replies — some people use a full signature on new emails but a shorter one when replying to a thread. Both options are in the same settings area.

Using different signatures for different emails

If you have multiple email accounts or want different signatures for different purposes, create each one in the signatures section and give it a clear name. Then, when you compose a new message, look for the signature dropdown in the message itself — it is usually near the bottom of the compose window. Click it and choose which signature you want for that specific email.

This is useful if you manage both a work account and a personal account, or if you send formal emails and casual ones. You can set a default for each account separately, then override it on individual messages when you need to.

Adding links and formatting to your signature

Outlook lets you format text in your signature — you can make text bold, italic, or change the color. Highlight the text you want to change and use the formatting buttons in the signature editor. To add a link, select the text you want to link and click the link icon, then paste the web address.

Be careful with colors and fonts. Signatures that look good on your screen might be hard to read on a phone or in dark mode. Stick with black or dark gray text and a standard font like Arial or Calibri. Links should be blue and underlined so people recognize them as clickable.

Removing or editing an existing signature

To change a signature you already created, find it in the signatures list and click on it. Edit the text in the box below, and your changes save automatically. To delete a signature entirely, select it and click the minus button or Delete.

If you delete a signature that was set as a default, Outlook will stop adding any signature to your emails until you choose a new default. You can always create a new one or restore an old one by typing it back in.

Troubleshooting signatures that do not appear

If you created a signature but it is not showing up on your emails, check that you set it as a default. In Outlook on the web, the signature should appear automatically on new messages once you choose it in settings. In desktop Outlook, close the program completely and reopen it — sometimes the signature does not load until you restart.

If you are replying to an email and the signature is missing, you may have set a different default for replies. Go back to settings and check the Replies and forwards dropdown. Some people turn off signatures for replies on purpose to keep threads shorter, so make sure that is not what happened.

Frequently Asked Questions

Can I use the same signature on my phone and desktop?

Yes. Signatures are stored in your Outlook account, not on a specific device. If you use Outlook on the web or the Outlook app on your phone, the same signatures appear everywhere. Changes you make on one device show up on all of them.

What happens to my signature if I change my password?

Your signature stays the same. Passwords and signatures are separate — changing one does not affect the other. Your signature will still appear on every email you send.

Can I add an image or logo to my signature?

Yes. In the signature editor, look for an image or insert button, then upload a file from your computer. Keep the image small — large logos make emails slow to load. A logo under 100 pixels wide is usually best.

Why does my signature look different on my phone than on my computer?

Different email apps display formatting differently. Outlook on the web and the Outlook app usually match, but Gmail or Apple Mail might show colors or fonts slightly differently. Stick with straightforward text and standard fonts to look consistent everywhere.