2FA Testing · TOTP · Shared Authenticator · No Phone Required
Test Your 2FA Flows Without Passing a Phone Around the Team
Zunoy TOTP Inbox is a shared authenticator for teams — browser-based, no app install, no personal device required. Add your TOTP entry once and every team member gets live 2FA codes in the browser, updated every 30 seconds. The shared authenticator app your QA team actually needed — and that Google Authenticator was never built to be.
RFC 6238 compliant · Works with any TOTP-enabled service · No app install required · Browser-based
If you're looking for any of these, this page is for you
Zunoy TOTP Inbox is a shared, browser-based authenticator built specifically for dev and QA teams. Add a TOTP entry once — every team member sees live codes simultaneously, from any browser, with no phone or app required.
2FA testing is broken the moment more than one person needs access.
Two Testers. One Phone. One Code.
Your QA team is running the 2FA login flow. One team phone. One authenticator app. Two testers need the code at the same time. One of them is always a step behind — waiting for the 30-second window to reset, testing blocked by a hardware dependency.
Testing Stops When the Phone Owner Is Unavailable
The authenticator app lives on one developer's personal phone. That developer is offline, in a different timezone, or simply unavailable. The entire QA flow stops — because the shared authenticator for the team is actually a personal device belonging to one person.
Personal Phones Don't Belong in a Test Environment
Your 2FA test flow depends on someone's personal device. It's not reproducible, not shareable, and not something you can hand off to the next sprint. That's not a test environment — that's a workaround your team has normalised.
A shared authenticator for teams — add once, access from any browser.
Add via QR code or secret key — 30 seconds per entry
Upload the QR code from your service's 2FA setup screen, or paste the secret key directly. Add an issuer name and username. The TOTP entry is registered immediately — a shared authenticator entry visible to every team member with access, from any browser, from that moment forward.
Live 2FA codes in the browser — familiar by design
Every TOTP entry shows its current code, updating every 30 seconds with a countdown timer. Copy any code with one click. The same muscle memory as Google Authenticator — but in a browser tab your whole team shares. No app install. No phone. No personal device required to test 2FA flows.
Whole team sees every code simultaneously
Every team member opens TOTP Inbox and sees all entries and live codes at the same time. No phone passing. No "can you send me the code?" No blocked testing sessions. Your shared authenticator for the team — always available, always in sync.
Role-based access — controlled by admins
Admins control who can add, edit, and delete TOTP entries. QA engineers and testers get view and copy access — the right permissions for each role, without exposing configuration to everyone on the team.
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Admin adds the TOTP entry
Team lead goes to TOTP Inbox and uploads the QR code from the staging environment's 2FA setup screen — or pastes the secret key directly. Entry is registered with an issuer name and username. Live code visible immediately to the whole team. This is your shared authenticator for the team — set up once, used by everyone.
QA team accesses live codes
Every QA engineer opens TOTP Inbox in their browser. All TOTP entries and live codes are visible simultaneously — no phone required, no authenticator app installed, no personal device involved.
QA runs the 2FA login flow
Tester navigates to the staging login page, enters credentials, and is prompted for a TOTP code. Opens TOTP Inbox, copies the current code, pastes it. Login proceeds. The entire flow tested without a single phone involved.
Multiple testers run simultaneously
A second tester runs the same 2FA flow at the same time — different browser, same shared authenticator inbox. Both see the same current code. Both complete their tests independently. No waiting. No coordination overhead.
Sign off and move on
QA confirms the 2FA flow works end-to-end across all test scenarios. Reproducible on the next sprint — no personal device dependency, no single point of failure.
Every current approach has a team-shaped gap.
Team member's personal phone
One person, one device. Testing stops when they're unavailable. Not reproducible, not shareable — not a test environment.
Google Authenticator / Authy
Built for individuals securing personal accounts. Not shareable across a team. Mobile only. No browser access. No team features whatsoever.
Building an internal shared authenticator
Engineering time spent on infrastructure. Maintenance overhead. Still doesn't give you role-based access, browser compatibility, and RFC 6238 compliance out of the box.
No testing — ship and hope
2FA flows break in ways that lock users out of their accounts. Not a viable approach for any team shipping authentication to real users.
Zunoy TOTP Inbox is the shared authenticator for teams that Google Authenticator was never designed to be — browser-based, team-shared, role-managed, and ready in under 2 minutes.
BUILT FOR
Who uses Sandbox for 2FA testing
QA engineers
Access live TOTP codes from any browser during a testing session — no phone, no authenticator app, no waiting on a teammate. A shared authenticator for your QA team that's always available, regardless of who's online.
Backend developers
Test the complete 2FA login flow end-to-end in staging — from TOTP code generation to validation — without a personal device in the loop. Browser-based 2FA testing that's reproducible across every sprint.
Security engineers
Validate that your TOTP implementation follows RFC 6238 correctly — time windows, code expiry, and replay protection — in a controlled, reproducible test environment with no personal device dependency.
Other testing scenarios covered by Sandbox
Transactional email testing
Capture, preview, and score every transactional email before it reaches a real user.
SMS OTP testing
Test SMS delivery and OTP codes in staging without sending to a real phone.
Webhook testing
Inspect, replay, and debug incoming webhook payloads with a persistent request log.
The things developers ask about OTP / 2FA Testing
Is this for TOTP-based 2FA only, or SMS OTP as well?
This page covers TOTP-based 2FA — the kind that uses authenticator apps like Google Authenticator. Zunoy TOTP Inbox is a shared authenticator for teams testing TOTP flows. For SMS OTP testing, see SMS OTP Testing.
What is a shared authenticator for teams and how does TOTP Inbox work as one?
A shared authenticator for teams is a tool that gives multiple team members simultaneous access to the same TOTP codes — without passing a phone or sharing a personal device. Zunoy TOTP Inbox works as a shared authenticator by storing your TOTP secrets securely and displaying live codes in the browser to every team member simultaneously. Add an entry once — your entire team can access it from any browser, any device, any location.
How do I test 2FA without a phone or authenticator app?
Add your staging TOTP secret to Zunoy TOTP Inbox — via QR code upload or secret key paste. Every team member opens TOTP Inbox in their browser and sees live codes immediately. No phone. No authenticator app installed. No personal device required. Your entire QA team can test 2FA login flows simultaneously from any browser.
Does TOTP Inbox work as a Google Authenticator alternative for development teams?
Yes — specifically for staging and development environments. Google Authenticator is a personal mobile app, not shareable across a team. Zunoy TOTP Inbox is a browser-based shared authenticator built for teams — every member sees live codes simultaneously, role-based access controls who can manage entries, and nothing depends on a personal device. For production 2FA, continue using personal authenticator apps.
Can multiple team members use the same TOTP code at the same time?
Yes. Every team member sees the same live code simultaneously. Multiple testers can copy and use the same code within the same 30-second window — independently, without any coordination or waiting.
Every Testing Scenario, One Sandbox Workspace
Your app sends emails, SMS, webhooks, and TOTP codes. Sandbox handles all four — in one workspace, under one account, visible to your whole team.
Email Inbox
SMS Inbox
Webhook Inbox
TOTP Inbox
Sandbox
Test Email, SMS, Webhooks & 2FA codes without touching production.
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