API-First Email Verification Infrastructure

Bulk temporary mail infrastructure for teams

Spin up thousands of disposable inboxes on your custom domains dynamically. Route inbound SMTP streams directly to your backend, bypass anti-spam filters, and automate QA registration flows.

Get started for free

< 850ms Ingestion

High-speed SMTP parsing engine.

99.99% Uptime

Robust multi-tenant infrastructure.

Temp Mailbox Active
bulk-qa-0921@temp.domain.com
Listening to inbound SMTP relays...
Inbound Stream Load
99.99% Uptime
dev-test.io
TXT Verification verified successfully.
Built for developers
SMTP + API + Webhooks
Multi-tenant architecture
Secure & scalable
OUR CAPABILITIES

Engineered for Developer Speed

SMTP Email Processing

High-performance mail relay infrastructure to capture, parse, and route SMTP streams instantly.

REST API Access

Query parsed message parameters, retrieve headers, check link tokens, and fetch attachments via JSON.

Custom Domain Support

Bind your brand apex domains or testing subdomains using instant DNS TXT record lookups.

Multi-tenant Architecture

Full data encryption and access token scoping keep workspaces isolated and secure.

Webhooks & Automation

Deliver parsed JSON payloads directly to your endpoint with automated BullMQ exponential retries.

Email Analytics

Track monthly emails quotas, active generated address thresholds, and webhook status logs.

INTEGRATION FLOW

Step-by-Step Configuration

1
Add Domain

Add custom apex or subdomain.

2
Verify DNS

Publish TXT token & route MX.

3
Generate Key

Retrieve your active API key.

4
Send Mails

Mails hit our SMTP gateway.

5
Access Inbox

Retrieve via API or Dashboard.

DEVELOPER FIRST

Built for robust test integrations

Control disposable mailbox states programmatically. Assert verification links, retrieve OTP authentication codes, and run registration end-to-end integration tests without manual polling.

View API Reference
bash
// 1. Generate active disposable mailbox
curl -X POST https://mailzan.com/api/v1/mailboxes \
  -H "Content-Type: application/json" \
  -H "x-api-key: your_api_key" \
  -d '{"username": "qa-test-102", "domainId": "uuid"}'

// 2. Success Response payload
{
  "message": "Mailbox created successfully",
  "mailbox": {
    "address": "qa-test-102@mailzan.com",
    "isActive": true
  }
}
TARGET SCENARIOS

Diverse Sandbox Implementations

SaaS Applications

Build temporary email registration trials directly within your SaaS user flows.

QA & Testing

Verify registration confirmation emails, OTP passes, and webhook responses in CI/CD.

Temp Email Systems

Deliver dynamic, clean-contrast disposable inboxes directly to user-facing dashboards.

Automation Workflows

Inject webhook payloads into low-code automated flows to parse invoices, verify attachments, or capture link targets.

Customer Support Inboxes

Receive high-volume incoming emails on custom domains and parse them into support ticket objects.

INFRASTRUCTURE COMPLIANCE

Secure, Fast & Standard Compliant

Rate Limiting

DDoS protection and throttling limits enforce workspace quotas and server stability.

SMTP Abuse Protection

Automatic rejection of invalid recipients and domain spoofing targets.

Tenant Isolation

Multi-tenant scoping guarantees complete confidentiality of inboxes, domains, and mail databases.

Secure API Keys

Keys are generated as high-entropy crypt tokens and stored using one-way SHA-256 hash algorithms.

Scalable Infrastructure

BullMQ backend workers distribute DNS validation jobs and webhook relays asynchronously.

SAAS PLANS

Start today, with free or premium plan, you choose

Register today and access your bulk temporary mail sandbox instantly.

Business Plan
$100 / month

For scale automation and enterprise applications.

  • 10 Custom Domains
  • 50,000 Emails / Month
  • REST API v1 Access
  • Real-time Dashboard
  • Real-time Webhook Push
  • Priority Support
  • Advanced API limits
Contact Sales
Popular
Pro Plan
$10 / month

Designed for growing QA teams and automated testing.

  • 5 Custom Domains
  • 5,000 Emails / Month
  • REST API v1 Access
  • Real-time Dashboard
  • Real-time Webhook Push
  • Priority Support
  • Advanced API limits
Start Premium Trial
Free Plan
$0 / month

Perfect for individual developers starting out.

  • 1 Custom Domain
  • 20 Emails / Month
  • REST API v1 Access
  • Real-time Dashboard
  • Webhook notifications
  • Priority Support
  • Advanced API limits
Start Free
QUESTIONS & ANSWERS

Frequently Asked Questions

Have queries about custom domains, webhook payloads, or operational limits? Find answers below.

Navigate to the Domain Management tab in the dashboard, add your domain, copy the generated verification token, and publish a DNS TXT record matching that token (e.g. mailzan-verification=...). Once published, click "Verify" in the dashboard.

When our SMTP gateways receive an email destined for one of your active mailboxes, the parser extracts raw text, html bodies, and attachments. Mailzan instantly posts a structured JSON payload to your webhook target endpoint, signed with an HMAC SHA256 header for validation.

Limits are cycle-based. Our Free plan allows 1 custom domain and 20 emails/mo. The Pro plan supports 5 custom domains and 5,000 emails/mo for $10/mo, and the Business plan scales to 10 custom domains and 50,000 emails/mo for $100/mo. If you exceed limits, inbound SMTP requests return bounce rejections.

To maintain database hygiene and security, received emails have an automatic retention TTL threshold (defaulting to 24 hours). Background cron workers automatically erase expired messages and their related attachment binaries from the MySQL cluster hourly.