Managing Email Signatures in Outlook

Summary

This guide helps you troubleshoot and resolve: Managing Email Signatures in Outlook. Follow the steps below to fix the issue.

Common Causes

Step-by-Step Instructions

Method A: Outlook Desktop (Classic Outlook app)

Create a New Signature

1. Open Outlook.
2. Go to File > Options > Mail.
3. Click the Signatures… button under the “Compose messages” section.
4. In the Signatures and Stationery dialog, click New.
5. Enter a name for the signature (e.g., “Work Signature”, “Support Team”).
6. Use the Edit signature box at the bottom to design your signature.
7. You can format text (Bold, Italic, Underline).
8. Insert images (business logo, profile picture). Host images over HTTPS and keep each file under 100 KB to avoid spam filters and broken images.
9. Insert hyperlinks (website, LinkedIn).
10. Add a vCard (electronic business card) if needed.
11. Click Save and then OK to close the dialog.

Apply Signatures to Emails

• New messages: Choose the desired signature from the dropdown to apply to all new emails you compose.
• Replies/forwards: Choose the signature for replies and forwarded messages (you may select “(none)” to save space).

Manually Insert a Signature in an Email

• Compose a new email.
• On the Message or Insert tab, click Signature.
• Select the required signature from the list.
• If the signature does not appear automatically, clear any existing signature and re-select the correct one.

Managing Signatures for Multiple Accounts in Outlook Desktop

If you have more than one email account configured:

1. Open the Signatures and Stationery dialog via File > Options > Mail > Signatures….
2. In the “Select signature to edit” section, use the “E-mail account” dropdown to choose the account you want to edit.
3. Create or edit the signature for that specific account, then click Save.
4. To set defaults, stay in the same dialog and under “Choose default signatures” select the desired signature for “New messages” and “Replies/forwards” for each account.

Method B: Outlook for Windows (New Outlook)

Use this method if you are using the modern "New Outlook" application for Windows.

1. Open New Outlook.
2. Click the Settings (gear icon) in the top-right corner.
3. Select Accounts from the menu.
4. Click Signatures.
5. Create and format your signature in the editor.
6. Select whether to automatically include the signature on new messages and replies/forwards.
7. Click Save.

Method C: Outlook on the Web (OWA)

Use this method if you do not have the desktop app or want to set a signature that works in the web client.

1. Open a web browser and go to outlook.com, then sign in.
2. Click the Settings (gear icon) in the top-right corner.
3. Select Mail, then click Signatures.
4. In the Email signature box, create and format your signature.
5. Check “Automatically include my signature on new messages I compose”.
6. Check “Automatically include my signature on messages I forward or reply to”.
7. Click Save.

Best Practices for Small Businesses

• Professional consistency: Ensure all staff members use the same layout, font, and colour scheme to maintain a unified brand image across all communications.
• Mobile compatibility: Use simple text or minimal HTML. Heavy images can display poorly on mobile devices.
• Image hosting: Compress logos to under 100 KB and host them on a secure (HTTPS) server. Do not use local file paths, as recipients will not be able to view them.
• Essential details: Include your name, job title, company name, phone number, website, and physical business address where applicable.
• Social media links: Include professional profiles (e.g., LinkedIn) only if permitted by company policy.
• Legal disclaimers: Consult your organisation’s legal team for appropriate wording for confidentiality or disclaimer notices.
• Consistency across devices: Use roaming signatures to ensure your signature appears the same whether you are using Outlook Desktop, New Outlook, or Outlook on the Web.

Troubleshooting

• Signature not saving: Ensure you click “OK” in the Outlook Options dialog to save your changes. Corporate permission settings can sometimes block changes.
• Wrong signature appearing: Verify the default settings for the correct account in the Signatures dialog and confirm the “From” address in the new email.
• Images broken: Images stored locally will not display for recipients. Host them on an HTTPS web server or embed them as inline images where supported.
• Signature missing in plain-text emails: Signatures containing HTML formatting or images are stripped when composing in plain-text mode. Switch to HTML format in the message options to restore signature formatting.
• Signatures not appearing in shared mailboxes: Signatures are tied to the individual user account, not the shared mailbox. To use a signature when sending from a shared mailbox, ensure you have Send As permissions and select the shared mailbox address in the “From” field. For help adding a shared mailbox, see How to add a shared mailbox to Outlook desktop.
• Signatures not syncing across devices: Ensure you are signed in to all clients with the same Microsoft 365 account. Roaming signatures sync automatically, but there may be a short delay between updating a signature on one device and seeing it on another.
• Organisation-wide signature policies: Your IT administrator may manage signatures centrally via Exchange Online transport rules. In this case, you may not be able to edit or remove the signature manually.
• For issues where the signature does not update after changes, see the article Email signature not updating.

When to Seek Further Assistance

If organisational policies dictate a specific signature format, or if you cannot access the signature settings due to restrictions, Open a Ticket for IT support.

Still Having Issues?