Test Signature

Send test emails to preview how your email signatures render across different email clients and devices. Testing ensures signatures display correctly before deploying to the organization.

Note: Always test signatures in multiple email clients before deploying. Rendering varies significantly between Outlook desktop, Outlook web, Gmail, and mobile clients.

Test Options

Send Test Email

Send a sample email with the signature applied:

1. Select template — Choose the signature template to test.
2. Select test user — Choose a user whose Azure AD data will populate the dynamic variables.
3. Enter recipients — Add email addresses to receive the test (internal and external).
4. Send — Deliver the test email with the signature applied.

Preview Mode

View how the signature renders without sending:

• Desktop preview — Simulates Outlook desktop rendering
• Web preview — Simulates Outlook on the web rendering
• Mobile preview — Simulates mobile email client rendering
• Plain text preview — Shows the plain text fallback version

Testing Checklist

Visual Verification

• Logo displays correctly and is properly sized
• Brand colors render as expected
• Text is readable and properly formatted
• Social media icons link to correct profiles
• Layout is not broken or misaligned

Variable Resolution

• Display name populates correctly
• Job title and department appear
• Email address is accurate
• Phone numbers are formatted properly
• Company name and address are complete

Cross-Client Testing

Link Testing

• All links are clickable and point to correct URLs
• Social media icons link to correct profiles
• Campaign banner links to intended landing page
• Email address link opens compose window

Troubleshooting

Images Not Displaying

• Verify image URLs are publicly accessible (not behind authentication)
• Check that images are hosted on HTTPS
• Ensure image dimensions are specified in the HTML

Layout Breaking

• Use table-based layout instead of CSS flexbox or grid
• Apply inline CSS styles (not external stylesheets)
• Avoid CSS properties not supported by Outlook (e.g., max-width)

Variables Not Resolving

• Verify Azure AD attributes are populated for the test user
• Check variable syntax (%%VariableName%%)
• Ensure the transport rule condition matches the test message

Best Practices

• Test before every deployment — Always test after making template changes.
• Use real user data — Test with actual user accounts to verify variable resolution.
• Test external recipients — Send to Gmail and other external services to check rendering.
• Document results — Keep a record of which clients were tested and any issues found.

API Reference

POST /api/exchange/signatures/test Send test email with signature

GET /api/exchange/signatures/test/preview Get signature preview rendering

GET /api/exchange/signatures/test/history View past test results