V1 does not intercept email for you. Use your own inbox tooling or test-login setup, then run approved Zerocheck checks against the browser-visible login, onboarding, and session behavior.
“In the rush to get stuff out, time-consuming things get skipped like user testing, automation, analytics, monitoring, and manual testing… These bugs will keep annoying people using and relying on the software.”
The Pragmatic Engineersource
“Code without tests is bad code. It doesn’t matter how well written it is; it doesn’t matter how pretty or object-oriented or well-encapsulated it is.”
Michael Feathers, Working Effectively with Legacy Codesource
“The same pattern kept repeating itself: a harmless-looking UI change, a merge, and then a failing test in CI.”
monday.com Engineeringsource
No CI tool handles email-based flow testing natively
Integrating email testing often requires 3–4 separate tools
Auth/session failure mode rated critical severity, large solution gap across research
E2E testing tools can drive a browser but can’t receive emails. Email testing tools (Mailtrap, Mailosaur) can receive emails but can’t drive a browser. Integrating them requires 2–4 hours of plumbing per project.
Magic link flows are often left out of CI because teams need both inbox tooling and browser automation. This is distinct from enterprise SSO/SAML, which requires IdP tenant management.
Developer changes magic link expiry from 24 hours to 1 hour for security reasons. Off-by-one error: link expires in 1 millisecond instead of 1 hour. Unit tests pass - they mock the email service. No E2E test for the email flow exists. Merged. Next morning: 200 users can’t log in. They click the magic link; it’s already expired. Support is overwhelmed. The bug lives in production for 3 hours.
Customer-authored login setup provides a safe authenticated session. Approved onboarding and account tests run in the browser, with screenshots and step traces when auth-adjacent behavior regresses.
Use customer-authored login setup and environment variables for authenticated flows
Test browser-visible onboarding and authenticated product flows
Browser-visible auth and onboarding behavior is verified
Session state and visible app behavior verified in the browser
Other tools document their own platform controls. Zerocheck produces JSON evidence from your executed application tests.
Get coverage on the flows customers will notice when they break, without turning testing into a quarter-long infrastructure project.
Guard the only code path where a bug is measured in lost dollars per minute.
Zerocheck does not currently intercept email in V1. Use customer-authored login setup, environment variables, or your own test inbox tooling for magic-link and email-code flows.
Not as a built-in primitive in V1. Zerocheck can still test the browser-visible parts of onboarding and authenticated flows once you provide a safe login path.
Email-driven flows are flaky when inbox polling and browser automation are glued together. Treat those as customer-authored integrations until Zerocheck ships first-class email primitives.
Magic links and onboarding flows fail quietly. Zerocheck can run approved browser checks after you provide a safe login path.
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