How to Set Up Email Signature in Mailbird

What Is Mailbird?

Mailbird is a Windows-native desktop email client that supports multiple email accounts in a single unified inbox. It's known for its clean interface, speed, and integration with popular productivity apps. Mailbird is a popular choice for Australian professionals and small businesses who want a dedicated desktop email experience without the overhead of Outlook.

Step-by-Step: Add Your Signature in Mailbird

1. Open Mailbird — Launch Mailbird on your Windows PC.
2. Go to Settings — Click the hamburger menu icon (☰) in the top-left corner and select Settings.
3. Navigate to Identities — In the Settings panel, click Identities on the left sidebar to see all your connected email accounts.
4. Select Your Account — Click on the email account you want to configure a signature for.
5. Open the Signature Tab — Click the Signature tab within the selected account settings.
6. Toggle HTML Mode — Enable the HTML toggle to switch from the plain-text editor to the HTML editor.
7. Paste Your Signature — Paste your pre-designed HTML email signature directly into the editor.
8. Save Changes — Click Save to apply. Your signature will now appear on all outgoing emails from this account.

Key Features for Mailbird Signatures

Per-Account Signatures

One of Mailbird's best features is its support for per-account signatures. If you manage multiple email addresses (e.g., a work address and a freelance address), you can set up a unique, professionally branded signature for each one. Simply repeat the setup steps above for each account listed under Identities.

Mailbird's Unified Inbox & Signatures

Mailbird's unified inbox combines all your accounts into a single view. When you compose a new email or reply, Mailbird automatically uses the correct signature based on which account you're sending from. There's no need to manually switch — it's handled automatically.

Tips for Mailbird Email Signatures

• Host images externally: Mailbird handles linked images well. Host your logo or headshot on a reliable image hosting service and reference it with an absolute URL.
• Test with the preview: After pasting your HTML, send a test email to yourself to verify the signature renders correctly in Mailbird's compose window and in the recipient's client.
• Keep file sizes small: Optimise images to under 50 KB to ensure fast loading, especially over slower connections.
• Use inline styles: Mailbird's HTML editor works best with inline CSS styles rather than external stylesheets or <style> blocks.
• Check for updates: Mailbird regularly improves its HTML rendering. Keep your app updated for the best signature display.
• Mailbird is Windows-only: If you also use a Mac or mobile device, you'll need to set up your signature separately in those email clients.