Test Email, SMS, Webhooks & 2FA codes
Without Touching Production
Point your app at Sandbox during development. Every email, SMS, OTP, and webhook lands here — ready to inspect, debug, and validate. No surprises or real users involved.
Juggling four tools just to test a signup flow?
We've been there.
You need to verify that welcome email lands, the SMS OTP arrives, the webhook fires, and 2FA works—all before production.
But your current setup scatters test data across Mailtrap, a SMS simulator, ngrok, and Google Authenticator. It's slow,
error-prone, and impossible to automate.
The Staging Leak
Your password reset email just went to 10,000 real users during a staging test. One of them replied.
The Silent Failure
Your webhook fired, but nobody knows if the payload was even correct — until a customer complains.
The Credit Burn
Your team burned through $40 in SMS credits last sprint. Testing. In staging. None of it reached a real user.
The Shared Phone
QA is testing your OTP flow using a team member's phone. Two testers. One code. One of them is waiting.
These aren't edge cases. They're Tuesday morning. Zunoy Sandbox was built for exactly this.
Up and running in four easy steps
01
Point your app
Swap your SMTP, SMS, or webhook endpoint with your Zunoy Sandbox credentials.
02
Trigger your flows
Run signups, OTPs, alerts, or any notification your app sends.
03
Inspect everything
View full email HTML, SMS content, webhook payloads in real time.
04
Debug & Iterate
Analyze logs, retry events, and fix issues before going live.
One sandbox. Every notification channel covered
Most tools stop at email testing. Zunoy Sandbox lets you test email, SMS, webhooks, and OTP/2FA flows together — in a single workspace your whole team can use.
Email Testing
Capture and inspect every email sent from your app. View HTML, raw headers, attachments, spam score, and delivery metadata — all in one place
SMS Testing
Test every OTP and transactional SMS without spending a rupee on real delivery. REST API, Sender ID, SMS templates - all are included.
Webhook Testing
Get a unique URL. Point any service at it. Every payload arrives in real time — inspectable, replayable, organised by project.
Shared MFA/TOTP Inbox
Test multi-factor authentication without using a real device. Upload QR codes or secrets and share TOTP access across your QA team. No authenticator app required.
Ready to test safely? Start your
free sandbox in under 60 seconds.
One Single Tool for - Email + SMS + Webhook + TOTP
Maintain customer trust - Test Alerts before your Users do
Setup under 5 minutes
Real human support by Zunoy Team
GLOBAL FEED
Live activity across the Sandbox. One timeline for everything your app sends.
Every email caught, every webhook received, every OTP generated — in real time. Your entire team sees the same feed, simultaneously.
Real-time events, zero refresh
Isolated per account — fully private
Filter by Email, SMS, Webhook, OTP
Slack
Discord
Webhooks
Microsoft Teams
Know the moment something lands — without watching the inbox
Connect your Sandbox inbox to Slack, Discord, or Microsoft Teams and get instant notifications the moment an email, SMS, webhook, or OTP arrives — no need to keep a browser tab open. Perfect for real-time visibility during active testing.
LOW ON INDUSTRY PRICING
Pricing that scales with your testing, not your mistakes
How many operations do you plan to test?
100 Operations
Free
₹0
100 Operations / Month
0 AI Credits
2 Active Inboxes
5 Email Forwardings
Email Analysis: HTML Check & Link Check
2 SMS Inboxes
2 Webhook Apps
5 TOTP / MFA Profiles
Up to 3 Team Members
1 Workspace
Starter
₹499
2,000 Operations / Month
10 AI Credits
5 Active Inboxes
25 Email Forwardings
Email Analysis: Everything from Free + Spam Analysis
5 SMS Inboxes
5 Webhook Apps
10 TOTP / MFA Profiles
Up to 5 Team Members
3 Workspaces
Growth
₹1499
Business
₹N/A
Enterprise
₹44999
5,000,000 Operations / Month
5,000 AI Credits
Unlimited Active Inboxes
10,000 Email Forwardings
Email Analysis: Everything from Starter + Performance Score
Unlimited SMS Inboxes
Unlimited Webhook Apps
500 TOTP / MFA Profiles
Unlimited Team Members
Unlimited Workspaces
Free
Enjoy essential features at no cost, forever.
₹0
100 Operations / Month
0 AI Credits
2 Active Inboxes
5 Email Forwardings
Email Analysis: HTML Check & Link Check
2 SMS Inboxes
2 Webhook Apps
5 TOTP / MFA Profiles
Up to 3 Team Members
1 Workspace
Starter
Starter tier for basic workloads.
₹499
2,000 Operations / Month
10 AI Credits
5 Active Inboxes
25 Email Forwardings
Email Analysis: Everything from Free + Spam Analysis
5 SMS Inboxes
5 Webhook Apps
10 TOTP / MFA Profiles
Up to 5 Team Members
3 Workspaces
Growth
For growing workloads with top-up support.
₹1499
20,000 Operations / Month
50 AI Credits
10 Active Inboxes
100 Email Forwardings
Email Analysis: Everything from Starter + Performance Score
10 SMS Inboxes
10 Webhook Apps
20 TOTP / MFA Profiles
Up to 20 Team Members
5 Workspaces
Business
Business tier.
₹3499
60,000 Operations / Month
200 AI Credits
50 Active Inboxes
250 Email Forwardings
Email Analysis: Everything from Starter + Performance Score
50 SMS Inboxes
10 Webhook Apps
50 TOTP / MFA Profiles
Up to 50 Team Members
10 Workspaces
Enterprise
Enterprise tier
₹44999
5,000,000 Operations / Month
5,000 AI Credits
Unlimited Active Inboxes
10,000 Email Forwardings
Email Analysis: Everything from Starter + Performance Score
Unlimited SMS Inboxes
Unlimited Webhook Apps
500 TOTP / MFA Profiles
Unlimited Team Members
Unlimited Workspaces
*Prices are exclusive of local taxes.
Switching from Mailtrap, Mailhog, or Mailosaur?
Zunoy Sandbox is built as a modern developer-focused alternative. Compare features, pricing, and workflows to see why teams are switching.
Zunoy Sandbox
Everything you need in one predictable plan. No add-ons, no hidden costs, and no surprises as your team scales.
VS
Why the Difference
Most tools charge per monitor, per seat, or per feature. As your testing needs grow, so do your costs. Zunoy offers a simple flat-rate plan that includes everything your team needs from day one.
VS
Mailtrap
Email-only · Paid team features
Mail Hog
Email only · No Team Features
Mailsaur
No Webhook and TOTP
The things developers actually ask.
What is Zunoy Sandbox?
Zunoy Sandbox is a developer-first testing platform that lets you safely test Email, SMS, Webhooks, and TOTP/MFA flows without touching production or reaching real users. Every message your app sends lands in an inspectable sandbox instead.
Does Sandbox actually deliver emails or SMS to real people?
No. Nothing sent to a Sandbox endpoint reaches a real inbox, phone number, or webhook consumer. Messages are captured and shown in your dashboard for inspection — safe for development, staging, and CI.
Can I test webhook integrations too?
Yes. Webhook Sandbox lets you create apps with multiple inbound endpoints, with built-in support for Discord, Telegram, and Microsoft Teams, plus Generic endpoints for any custom JSON payload.
How do I test 2FA/OTP flows without a physical authenticator?
The MFA TOTP Sandbox acts as a virtual authenticator — give it a Base32 secret or seed and it generates valid time-based codes every 30/60 seconds, so you can automate MFA testing in CI/CD.
Do I need to change my provider or SDK to use Sandbox?
No. Point your existing SMTP client, SMS SDK, or webhook URL at your Sandbox endpoint — no provider setup, carrier registration, or code rewrites required.
Trusted by Modern Engineering Teams
Used by startups, SaaS companies, and QA teams to safely test email and webhook workflows before production.
Get a Second opinion from an AI Tool
Ask ChatGPT, Claude, Gemini or Perplexity for an honest take. They'll tell you what makes Zunoy Sandbox stands out in Email an other Module Testing
More Than Just a Sandbox
Zunoy is a developer & productivity suite to build, ship, and monitor your apps — so your tools share a workspace, a team, and a login. No more juggling multiple different dashboards.
🎉 All our products come with a Lifetime Free Tier.
Sandbox
Test Email, SMS, Webhooks & 2FA codes without touching production.
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