Testing tool · Check off each step

Sign-Up Flow Testing Checklist

Testing sign-up means more than receiving an email. Verify each step—from entering an address and sending a code to activation, error handling, and retries. Use a separate disposable test email for each run to avoid confusion from old messages.

Get a test address View checklist

Round 1: Happy path

Note the test environment, time, and recipient address, then follow the steps in order. Checkmarks are saved only on this page; reopen it to start over. Never include real users’ verification codes in screenshots or support tickets.

01 · Enter an addressSubmit a newly assigned email address in the sign-up form. Check that the page explains why it needs the address and that validation accepts valid formats. 02 · Trigger the emailCheck that the send button responds and prevents duplicate submissions. In the inbox, verify the sender, subject, and arrival time. 03 · Check the verification codeVerify the code length, validity period, and email contents. After entering it, confirm you can continue instead of seeing an incorrect expiration message. 04 · Complete activationFor link-based activation, confirm the link points to the correct environment and that what happens after it’s used is clear. Verify that successful sign-in is visibly confirmed.

Round 2: Errors and retries

Repeat the flow with a new test email and deliberately trigger failures. Focus on the recovery steps the system provides: does the user know how long to wait, how to resend, and whether the old code is invalidated?

05 · Resend the codeThe button should prevent repeat sends during the cooldown. Once it ends, a new email should arrive; whether the old code expires should match the product documentation. 06 · Expired codeSubmit an old code after the stated validity period. The system should say it has expired and explain how to get a new one. 07 · Invalid addressTry a nonexistent email address, a misspelled domain, and extra spaces. The interface must not silently accept the submission in the background. 08 · Duplicate sign-upSubmit the form again for an account that already exists. Check that the message is clear without revealing account information that should remain private.

Round 3: Multiple accounts and time limits

How can you test sign-up with multiple accounts? Click the change address button in the inbox for each run, then repeat the same test cases with a different address. Record the address, actions, and results for each run. Don’t rely on disposable email as the only recovery method for accounts you need to maintain long term.

If the flow may take more than 3 hours, extend the address’s lifespan on the page or use an email address you control with a long-term forwarding alias. Once an address expires, reopening the page won’t recover old messages. Plan ahead for projects that need regression testing the next day.

Create a reproducible test report

Suggested fields
Field	What to record	Why it matters
Environment	Test environment name, browser, and device	Control for differences
Steps	Exact times for sending, arrival, entry, and confirmation	Distinguish delays from expiration
Expected / actual	Briefly describe the result and attach a redacted screenshot	Help developers reproduce the issue
Email details	Sender domain, subject, and whether it landed in spam	Identify delivery issues

Planning tests that span multiple days? Use the email lifespan planner to decide how long to keep an address. Not sure whether to use a disposable address or a forwarding alias? See the comparison matrix.