A signup flow is the first reliability test your product gives a new user.

Before someone tries your best feature, they have already learned whether the app remembers their progress, explains what is happening, and helps them recover. As a software engineer, I think onboarding deserves the same care as the feature people came to use.

Here are six things I would check before shipping an email signup journey.

1. Make completion feel complete.
After someone verifies their email and creates a password, help them get started. Asking for the same password again creates doubt: did the account save? Account creation and establishing the session should work together, with a clear result.

2. Design recovery before polishing the happy path.
A delayed email, expired code, lost connection, or double tap should not become a guessing game. Explain which step failed and what to do next. “Account created, but sign-in failed” needs a different recovery path from “account could not be created.” The m…