Developers
Smoke-test signup flows on localhost, staging, and preview deploys without maintaining a spreadsheet of throwaway emails.
Fill · Inbox · VerifyShadow DOM · SPAsBuilt-in temp mailNo account to start
The workflow
What changes when you install it
Same signup page. Half the tabs, half the friction.
Without FakeSignup
- Invent a fake email for every test
- Fill 8+ fields by hand
- Open Gmail in another tab
- Hunt for the OTP in your inbox
With FakeSignup
- Auto temp inbox on fill
- One-click form fill
- Inbox in the side panel
- Copy OTP from the extension
Built for
Who uses FakeSignup
End-to-end signup testing for anyone who ships web apps.
QA engineers
Run repeatable QA signup testing with saved credentials and a disposable email Chrome extension — re-run registration paths without inventing new data each sprint.
Indie hackers
Try competitor signups, onboarding wizards, and referral flows fast - see what works without the tab shuffle.
How it works
Three steps, one workflow
No more inventing fake emails, opening Gmail, or hunting for verification links.
01
Open any signup page
Local dev, staging, or production - navigate to the registration form you need to test.
02
Click "Fill Signup Form"
The extension detects fields, fills realistic data, and creates a temp-mail inbox. You saw this in the live preview above.
03
Verify without switching tabs
OTP codes and confirmation links appear in the side panel. Copy or open - done.
Features
Everything signup testing needs
Not another form filler - an end-to-end workflow in one extension.
Smart fill
Detects fields by labels, autocomplete, and ARIA - including shadow DOM on modern component-based signups.
Temp mail inbox
Disposable inbox created automatically when you fill a form.
Email verification
Listens for confirmation emails, extracts OTP codes, and ranks verification links in the side panel.
Full Auto
Premium batch mode: fill, submit, verify, save login, and loop - up to 100 accounts per run.
Pricing
Start free, upgrade when you need more
No credit card to try. Premium unlocks unlimited fills and hands-free automation.
Free
$03 fills/day to start
Install and test immediately. Create a free account to unlock higher limits.
- 3 fills/day without account
- 15 fills/day with free account
- Save up to 10 test logins
- OTP auto-copy
- Custom name fixtures
For power users
Premium
$2.99/moor $15 lifetime
Batch-create accounts hands-free. Auto-submit, auto-verify, and export your test vault.
- Unlimited fills & inboxes
- Full Auto batch mode
- Auto-submit & auto-verify
- Unlimited saves + JSON export
- Custom phone & email fixtures
| Feature | Free | Premium |
|---|---|---|
| Fills per day | 3–15 | Unlimited |
| Saved accounts | Up to 10 | Unlimited |
| Full Auto mode | - | ✓ |
| Auto-submit forms | - | ✓ |
| Export accounts | - | ✓ |
| Inbox listen time | 5–15 min | 60 min |
Anonymous tier: 3 fills/day, 1 inbox/day, no saves. Sign up free for 15 fills/day and saved accounts.
FAQ
Common questions
Answers for developers evaluating this signup form filler Chrome extension.
How is this different from a regular form filler?
Generic form fillers only populate fields — no temp mail, no OTP extraction, and no saved test accounts. FakeSignup handles the entire signup workflow: disposable inbox, realistic data, verification listening, and OTP codes in one disposable email Chrome extension.
Does it work on modern SPA signup forms?
Yes. FakeSignup uses native input events that frameworks listen for, and it traverses shadow DOM trees. It works on component-based sites, not just plain HTML forms.
Do I need a real email address?
No. FakeSignup creates a disposable inbox automatically when you fill a form. Verification emails arrive in the extension's Inbox tab.
What is Full Auto mode?
A Premium feature that batch-creates accounts hands-free: fill, submit, confirm the verification email, save the login, return to the start URL, and repeat — up to 100 times per run.
Is my data stored securely?
Temp-mail addresses are disposable. Saved accounts stay in Chrome local storage, or sync to your FakeSignup account if you sign in. No real personal data is required.