# MailVeri

> MailVeri is a high-throughput, enterprise-grade email verification SaaS platform designed for sales outreach, lead generation pipelines, marketing automation, and AI agents. It delivers 99%+ deliverability accuracy with pay-as-you-go pricing that is up to 90% cheaper than legacy providers, featuring credits that never expire and zero monthly subscriptions.

## Overview & Core Capabilities

MailVeri operates a dual-engine email validation architecture:
1. **Real-Time Single Verification API**: Sub-100ms synchronous verification specialized for point-of-capture form validation, lead scoring, CRM triggers, and AI agent tool calling via persistent TLS SMTP pooling and identity directory APIs.
2. **High-Throughput Bulk Verification Daemon**: Scalable async processing for massive list uploads (CSV, Excel, TXT) supporting up to 1,000,000 emails per batch with automated webhook dispatch upon completion.

### Comprehensive 9-Step Verification Suite
- **Syntax & RFC 5322 Validation**: Rejects malformed addresses, illegal recipient delimiters, and invalid characters.
- **DNS & MX Record Lookup**: Verifies destination mail exchange records with fallback cache.
- **Deep SMTP Direct Handshake**: Direct carrier handshake verifying mailbox existence without delivering actual emails.
- **Catch-All Domain Detection**: Probes domain-level wildcard acceptance to prevent deliverability traps.
- **Disposable & Temporary Domain Isolation**: Live in-memory database filtering 50,000+ burner email providers (e.g., Mailinator, TempMail, GuerrillaMail).
- **Role Account Classification**: Flags departmental/functional aliases (`admin@`, `support@`, `sales@`, `info@`, `billing@`) to reduce spam complaint risks.
- **Full Inbox Detection**: Identifies over-quota storage mailboxes that bounce incoming mail.
- **Provider-Specific Normalization**: Automatic alias deduplication and canonicalization for Gmail, Outlook, iCloud, Fastmail, and Yahoo.
- **Greylisting & Anti-Abuse Protection**: Intelligent cooldown and retry queues ensuring accurate verdicts without burning proxy pools.

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## Pricing & Pay-As-You-Go Economics

MailVeri enforces a strictly transparent pricing model:
- **No Monthly Subscriptions**: No recurring billing traps, no forced monthly renewals.
- **Credits Never Expire**: Purchased credits remain valid permanently until consumed.
- **1,000 Free Credits on Registration**: Free trial with no credit card required to test full verification accuracy.
- **Pay Only for Conclusive Results**: Credits are deducted exclusively for definitive verdicts (`VALID`, `INVALID`, `DISPOSABLE`, `ROLE_ACCOUNT`, `CATCH_ALL`, `FULL_INBOX`). Unresolvable errors or unknown statuses are never charged.

### Standard Credit Packages
- **10,000 Credits**: $9 ($0.0009 / email)
- **25,000 Credits**: $19 ($0.00076 / email)
- **50,000 Credits**: $39 ($0.00065 / email) — *Best Seller (+20% bonus = 60,000 credits)*
- **100,000 Credits**: $59 ($0.00059 / email)
- **250,000 Credits**: $119 ($0.00048 / email)
- **500,000 Credits**: $199 ($0.0004 / email)
- **1,000,000 Credits**: $299 ($0.000299 / email)
- **2,500,000 Credits**: $599 ($0.00024 / email)
- **5,000,000 Credits**: $999 ($0.0002 / email)

*Enterprise packages for volumes over 5,000,000 emails include custom SLAs and dedicated IP infrastructure.*

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## Market Benchmark vs. Competitors (July 2026 Audit)

| Volume | MailVeri | ZeroBounce | NeverBounce | MillionVerifier | MailVeri Savings |
| :--- | :--- | :--- | :--- | :--- | :--- |
| **10,000 emails** | **$9** | $129 | $80 | $39 | **77% – 93% cheaper** |
| **100,000 emails** | **$59** | $649 | $400 | $149 | **60% – 91% cheaper** |
| **1,000,000 emails** | **$299** | $3,199 | $3,000 | $449 | **33% – 91% cheaper** |
| **Credit Expiration** | **Never** | Sub-dependent | 12 months | 12 months | **100% Non-expiring** |
| **Free Trial Credits**| **1,000** | 100 | 10 | 100 | **10x – 100x more free credits** |

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## Developer & AI Integration

### REST API
- **Endpoint**: `https://api.mailveri.com/v1/verify-mail/`
- **Authentication**: Bearer API Key via `Authorization: Bearer <API_KEY>` or `X-API-Key`
- **Output**: Granular deliverability status, provider type, MX record, and reason code.
- **Bulk Upload**: Asynchronous multipart file dispatch with webhook push events upon batch completion.

### Model Context Protocol (MCP) Server
MailVeri provides a native FastMCP / JSON-RPC server (`mailveri-mcp`) enabling AI agents (Claude Desktop, Cursor, Windsurf, Claude Code, OpenAI GPT Actions) to execute email verification tasks autonomously:
- `mailveri_verify_email`: Synchronous single-email deliverability check in under 500ms.
- `mailveri_verify_batch`: Initiate asynchronous bulk email list cleaning job.
- `mailveri_get_batch_status`: Query progress percentage and deliverability statistics.
- `mailveri_download_batch_result`: Download clean results (categorized ZIP archive or filtered CSV).
- `mailveri_get_balance`: Inspect account credit balance.
- `mailveri_delete_batch`: Delete completed batch files or cancel active jobs.

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## Primary Links & Resources

- [Homepage](https://mailveri.com): MailVeri official website and overview.
- [Pricing Plans](https://mailveri.com/pricing): Detailed credit packages, volume pricing slider, and ESP overpayment calculator.
- [Competitor Comparison](https://mailveri.com/compare): Live price and accuracy benchmark auditing 21 email verification services.
- [Developer Documentation](https://mailveri.com/docs): API reference, webhooks, and SDK examples in Python, Node.js, and cURL.
- [Free Online Tools](https://mailveri.com/tools): Free email deliverability spot-checker, MX DNS lookup, and domain reputation scoring.
- [Frequently Asked Questions](https://mailveri.com/faqs): Comprehensive knowledge base covering deliverability, bounce codes, and compliance.
- [Web Application Dashboard](https://app.mailveri.com): User dashboard for batch cleaning, API keys, and balance management.