Email Scanner Protection Solution
Descope provides built-in email scanner protection specifically for this issue. Email security services like Microsoft Defender and anti-spam tools often click magic links to scan for threats, which can invalidate the one-time tokens before real users access them.
Use Built-in Flow Actions
Replace your current magic link flows with Descope's email scanner protection actions :
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Sign In / Magic Link / Email with Email Scanner Protection
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Sign Up / Magic Link / Email with Email Scanner Protection
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Sign Up or In / Magic Link / Email with Email Scanner Protection
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Update user / Magic Link / Email with Email Scanner Protection
These actions automatically detect email scanners and show an intermediate screen with a button that scanners typically won't interact with, while allowing genuine users to proceed directly .
How It Works
When an email scanner clicks the magic link, the system detects it's not a real user and presents a screen requiring manual interaction. This prevents token invalidation since scanners don't typically click buttons on web pages . Real users see the button and can proceed normally to complete authentication.
The protection works automatically once you replace your existing magic link actions with the scanner-protected versions - no additional configuration needed .
Checking for Email Scanners | Descope Documentation
Checking for Email Scanners | Descope Documentation