No sign-up required · Instant inbox · Privacy-first

Professional email,
without the baggage.

Generate a disposable inbox in 3 seconds. Use it for signups, testing, or anything you don't want in your real inbox. Upgrade to keep it forever on your own domain.

Your instant address
xk7-swift@mailnova.ioUse this →

Expires in 24 hours · No account needed

0+
Addresses generated
0+
Countries served
0.9%
Uptime SLA
0s
Avg. delivery time
Built for professionals

Everything your real inbox can't do

CompanyInbox is built for developers, founders, and privacy-conscious teams who need a real email workflow — without the noise.

Instant inbox, zero friction

Free

Your address is live in under 3 seconds. No verification, no forms, no waiting. Share it anywhere and messages arrive immediately.

Bring your own domain

Business

Connect your company domain via DNS records. Receive email at hello@yourcompany.com through our infrastructure — no hosting required.

Permanent addresses from $4/mo

Pro

Upgrade to Pro and your address never expires. Pick a custom username like alex@mailnova.io and keep it as long as you want.

Up to 200 GB cloud storage

All plans

Attachments are stored securely in your cloud drive. Download them any time, search across all your messages, and never lose an important file.

Full REST API access

Business

Pipe verification codes directly into your test automation. Read messages, list addresses, and manage your inbox programmatically via our REST API.

Team shared inboxes

Business

Business plan supports up to 10 team seats with a shared inbox. Perfect for support@, billing@, or any team address that multiple people need to monitor.

Up and running in 30 seconds

No configuration. No DNS records. No credit card. Just an inbox.

01

Generate your address

Click "Create free inbox" and your address is ready instantly. Choose from mailnova.io, dropbox.email, or fastinbox.net.

02

Share it anywhere

Use it for signups, API testing, newsletter subscriptions, or any service you don't fully trust with your real email.

03

Read messages in real time

Messages arrive in your inbox within seconds. Read them, download attachments, and delete when done. Upgrade to keep it forever.

New · SecurePaste

Share secrets that
self-destruct.

Drop API keys, deploy scripts, credentials, or any sensitive text into a paste. Get a unique URL. Set it to expire in 1 hour, 24 hours, or never. No account needed to view.

  • Expiring links — 1h, 24h, 7d, 30d, or never
  • Syntax highlighting for 10 languages
  • Tied to your inbox session — manage all pastes in one place
  • Public or private visibility per paste
Try SecurePaste free
companyinbox.online/p/x7k2m9qr23h 41m remaining
Staging API Keysbash
# Staging environment — expires in 24h
export STRIPE_KEY="sk_test_4eC39HqLyjWDarjtT1zdp7dc"
export SUPABASE_URL="https://xyzabc.supabase.co"
export SUPABASE_ANON="eyJhbGciOiJIUzI1NiIsInR5cCI..."

# Deploy with:
vercel --env staging
312 chars · 6 views

Who uses CompanyInbox?

From solo developers to growing teams — here's how people use it every day.

👨‍💻

Developers & QA Engineers

  • Test email verification flows without polluting your real inbox
  • Pipe OTP codes directly into test automation via the API
  • Create isolated inboxes for each test environment
  • Receive webhook payloads and transactional emails during development
🚀

Founders & Indie Hackers

  • Sign up for competitor tools without revealing your identity
  • Use a professional address for your product launch on ProductHunt
  • Keep your personal inbox clean from trial subscriptions
  • Set up a support@ address on your own domain from day one
🔒

Privacy-Conscious Users

  • Sign up for services without handing over your real email
  • Receive newsletters without tracking your main inbox
  • Protect yourself from data breaches and spam campaigns
  • Compartmentalise your online identity across services
🏢

Small Teams & Startups

  • Create team inboxes like billing@ and support@ on your domain
  • Share access with up to 10 team members on Business plan
  • Manage all company email addresses from one dashboard
  • Apply for a custom domain and go live in under an hour

Trusted by builders worldwide

Real feedback from real users — no cherry-picking.

“I use CompanyInbox for every third-party API signup. The inbox is instant, the address actually works with strict senders, and Pro paid for itself in the first week by saving me from inbox spam.”

RS

Rohan Sharma

Senior Backend Engineer · Razorpay

“The permanent address feature is exactly what I needed for my portfolio contact form. Clean UI, no clutter, and the custom domain selection makes it feel like a real company email.”

KR

Kavya Reddy

Product Designer · Groww

“Been on the Business plan for 3 months. The API access lets me pipe verification codes directly into my test automation. Delivery is faster than Mailinator for most senders.”

MC

Marcus Chen

Indie Developer · Self-employed

Simple pricing

Start free. Scale when you need to.

The free tier is genuinely useful. Upgrade to Pro for $4/mo when you need a permanent address that never expires.

Free

$0forever
  • 1 temp address
  • 24-hour expiry
  • 1 GB storage
  • Basic search
Most popular

Pro

$4/mo
  • 3 permanent addresses
  • Never expires
  • 25 GB storage
  • Custom username

Business

$16/mo
  • Unlimited addresses
  • Custom domain
  • 200 GB storage
  • Full API + 10 seats
See full pricing & features →

Your inbox is ready.
Start in 3 seconds.

No credit card. No verification. No spam. Just a clean, professional inbox that works.

84,000+ addresses generated · 120+ countries · 99.9% uptime