uStudio system emails include universal links, which allow users to open the uStudio mobile app directly when clicking a link on a device where the app is installed. This creates a seamless experience by taking users straight to the intended content.
Impact of Email Security Tools
Some email security tools rewrite or wrap URLs to scan them for safety before allowing access. Common examples include:
Microsoft Defender for Office 365 (Safe Links, sometimes referred to as URL Defense)
Proofpoint URL Defense
Mimecast URL Protection
When these tools modify uStudio links, they can interfere with the structure required for universal links to function. As a result:
The link may not open the uStudio mobile app
Users may be redirected to a web page instead of the app
Additional login steps or errors may occur
This behavior is not specific to uStudio and is a known limitation of link-wrapping security tools.
Required Configuration
For universal links to function as intended, uStudio links must be allowed to pass through email security tools without modification.
This typically requires coordination with your email or security administration team to configure an exception or allowlist rule for uStudio domains within your organization’s email security platform.
Key Takeaway
If links are being rewritten or wrapped, the mobile app experience will be impacted.
To ensure users can open content directly in the app, an exception must be configured in the email security tool.
Notes
This requirement is most commonly seen in environments using Microsoft Defender Safe Links due to its widespread use in Outlook.
While configurations may vary by organization, the core requirement remains the same: links must not be altered in order for universal linking to work properly.
What to Share with Your IT or Security Team
If you are experiencing issues with links not opening the uStudio mobile app, you can share the following with your IT or Security team:
"We are using uStudio, which relies on universal links to open content directly in the mobile app.
We’ve identified that our email security tools (such as Microsoft Defender Safe Links, Proofpoint URL Defense, or Mimecast URL Protection) may be rewriting or wrapping URLs in uStudio system emails.
This modification is preventing universal links from functioning correctly, which impacts the mobile app experience.
To resolve this, we need to configure an exception or allowlist rule so that uStudio links are not modified by the email security tool.
Specifically, we are requesting:
uStudio domains to be excluded from URL rewriting or link wrapping
Links to pass through the security tool without modification
This will ensure that users can open content directly in the uStudio mobile app as intended."
Optional: Information to Provide
If requested by your IT team, you may also need to provide:
Example email(s) where links are being rewritten
Screenshots of the modified URLs
Confirmation of which email security tool is in use (e.g., Microsoft Defender Safe Links)
