Where to find and edit your signature in Outlook
Your signature block in Outlook lives in the settings, not in your email draft. The exact path depends on which version you use — desktop Outlook, Outlook on the web, or Outlook for Mac — but the principle is the same: you create or edit the signature once, and it attaches to every outgoing message automatically.
For Outlook on the web (the version you access through your browser), click the gear icon in the top right corner, then select "View all Outlook settings." Go to "Mail" in the left sidebar, then "Compose and reply." Scroll down to "Email signature" and type or paste your signature text directly into the box. When you're done, click "Save" at the bottom of the page.
For Outlook desktop (the application installed on your computer), go to "File" in the top menu, then "Options." In the left sidebar, click "Mail," then find "Signatures" on the right side. Click the "Signatures..." button to open the signature editor. You can create multiple signatures here and choose which one to use for new messages versus replies.
Key Takeaways
- Outlook stores signatures in settings, not in individual emails, so you only set them up once and they appear on every message you send.
- Outlook on the web and Outlook desktop have different paths to the signature settings, so the steps depend on which version you use.
- You can create multiple signatures and assign different ones to new messages, replies, or specific email accounts if you have more than one.
- Signature changes take effect immediately for new messages but do not change signatures on emails you have already sent.
Creating multiple signatures for different purposes
If you manage more than one email account in Outlook, or if you want different signatures for work versus personal messages, you can create as many signatures as you need. In Outlook desktop, the "Signatures" dialog box has a "New" button that lets you add another signature. Give each one a clear name like "Work" or "Personal" so you can tell them apart.
Once you have created multiple signatures, you can set a default for new messages and a separate default for replies. In the same "Signatures" dialog, look for the dropdown menus labeled "New messages" and "Replies and forwards." If you have multiple email accounts, you can also assign a different signature to each account — click on the account name in the left sidebar, then choose which signature to use for that account.
Adding formatting, images, and links to your signature
Outlook's signature editor accepts basic formatting: you can make text bold or italic, change the font, and add line breaks. In Outlook on the web, the editor shows a toolbar with formatting buttons. In Outlook desktop, you can highlight text and use the formatting options in the dialog box.
To add an image to your signature in Outlook desktop, click inside the signature text box, then go to "Insert" in the menu bar and select "Picture." Choose the image file from your computer. Keep the image small — a logo or headshot should be no wider than 200 pixels — so it does not make your signature block huge. In Outlook on the web, the image option is in the toolbar at the bottom of the signature box.
You can also add hyperlinks. Highlight the text you want to link, then click the link icon in the toolbar (or right-click and select "Hyperlink" in desktop Outlook). Paste the full URL, including "https://" at the beginning, so the link works when recipients click it.
Removing or disabling a signature
If you want to stop using a signature, you have two options: delete it entirely, or set it to blank so no signature appears on your messages. In Outlook desktop, open the "Signatures" dialog, select the signature you want to remove, and click "Delete." In Outlook on the web, clear all the text from the signature box and click "Save."
If you have multiple signatures and want to use none of them on a particular message, you can override the default. In Outlook desktop, when you compose a new email, look for the "Signature" button in the "Insert" tab of the ribbon. Click it and select "(none)" from the dropdown. In Outlook on the web, you can delete the signature text from the bottom of the message before you send it.
Why your signature might not appear on outgoing mail
The most common reason a signature does not show up is that you set the default to "(none)" or left the signature box empty. Check your signature settings to confirm a signature is actually assigned to new messages. If you recently changed your signature, remember that the change only affects new messages going forward — old emails you already sent will still have the old signature.
If you are using a shared mailbox or a delegated account, signature behavior can be different. Some shared mailboxes do not support personal signatures, or the signature may appear under a different name. Check with your email administrator if you are unsure whether your account type supports signatures.
In Outlook on the web, signatures sometimes do not appear if you are using an older browser or if JavaScript is disabled in your browser settings. Try refreshing the page or switching to a different browser to see if that fixes it. In Outlook desktop, restarting the application usually resolves signature display issues.
Signature best practices for work and professional email
A professional signature typically includes your full name, job title, company name, phone number, and email address. Keep it to four or five lines — anything longer can look cluttered, especially on mobile devices where space is limited. Avoid bright colors, unusual fonts, or large images that can distract from your message or slow down email delivery.
If your company has branding guidelines, follow them in your signature. Many organizations provide a standard signature template that employees should use. If you are unsure what to include, ask your manager or check your company's email policy.
Remember that your signature appears on every message you send, including replies to threads. If you are replying to a long email chain, your signature will be visible to everyone in the conversation, so keep it professional and concise.
Frequently Asked Questions
Can I use different signatures for different email accounts in Outlook?
Yes. In Outlook desktop, open the "Signatures" dialog, select the account name in the left sidebar, and choose which signature to use for that account. In Outlook on the web, you can only set one signature per mailbox, but if you manage multiple accounts, you can set a different signature for each one by logging into each account separately and configuring its settings.
Will my signature appear on emails I send from my phone?
Outlook for mobile (iPhone and Android) uses the signature you set in Outlook on the web, not the one in Outlook desktop. If you want the same signature on your phone, make sure it is configured in the web version. Some mobile email apps add their own default signature — you can usually turn this off in the app's settings.
What happens to my signature if I change my password?
Your signature is stored separately from your password, so changing your password does not affect it. Your signature will remain the same unless you manually edit or delete it.
Can I add a legal disclaimer or confidentiality notice to my signature?
Yes, you can type any text you want into the signature box, including legal disclaimers. However, check with your company's legal or IT department first — many organizations have specific language they require for disclaimers, and some email systems have rules about what can appear in signatures.
Why does my signature look different when recipients see it?
Email clients display formatting differently. A signature that looks perfect in Outlook might appear with different fonts, colors, or spacing in Gmail or another email app. Stick to simple formatting and standard fonts like Arial or Calibri to ensure your signature looks consistent across different email clients.