# Email validation API for AI agents

Scrollport gives AI agents 6 tools to verify email addresses, from Kitt AI, MillionVerifier, LeadMagic, Tomba, Hunter and 1 more, through one connection. Prices run from $0.0025/request to $0.0273/request, paid per use from one prepaid wallet with no subscription, provider accounts or API keys. Agents use them over MCP, the CLI or the HTTP API.

Updated 14 September 2026

## Validate email addresses with Scrollport

[Get started](https://scrollport.com/start)

Use verified tools with pay-per-use pricing. Provider access is included. Tools that work in your own apps ask you to connect that account.

Connect your first agent to receive $1 trial credit.

## Compare Email validation API tools

The lowest listed price is Email Verification from Kitt AI at $0.0025/request. Compare what each tool returns before choosing.

| Tool | Provider | What it returns | Price |
| --- | --- | --- | --- |
| [Email Verification](https://scrollport.com/tools/providers/kitt/email-verification) | Kitt AI | Check one email address for deliverability and DNS or SMTP risks. | $0.0025/request |
| [Verify an email address is deliverable](https://scrollport.com/tools/providers/millionverifier/people-email-verify) | MillionVerifier | Verify an email address in real time | $0.0025/request |
| [Verify an email address is deliverable](https://scrollport.com/tools/providers/leadmagic/people-email-verify) | LeadMagic | Check an email is real and deliverable, and whether its domain is catch-all | $0.0088/request |
| [Verify an email address is deliverable](https://scrollport.com/tools/providers/tomba/people-email-verify) | Tomba | Deliverability status, score, MX/SMTP checks, catch-all, disposable, gibberish and role-address flags for one address | $0.0125/request |
| [Email Verifier](https://scrollport.com/tools/providers/hunter/email-verifier) | Hunter | Verify an email address and return deliverability, confidence and risk signals. | $0.0168/request |
| [Email Validation](https://scrollport.com/tools/providers/zerobounce/email-validation) | ZeroBounce | Validate an email address and return deliverability, status and risk information. | $0.0273/request |

## 6 available tools

Verify email addresses

$0.0025/request

### Email Verification

Check one email address for deliverability and DNS or SMTP risks.

Kitt AI

Verify email addresses

$0.0025/request

### Verify an email address is deliverable

Verify an email address in real time

MillionVerifier

Verify email addresses

$0.0088/request

### Verify an email address is deliverable

Check an email is real and deliverable, and whether its domain is catch-all

LeadMagic

Verify email addresses

$0.0125/request

### Verify an email address is deliverable

Deliverability status, score, MX/SMTP checks, catch-all, disposable, gibberish and role-address flags for one address

Tomba

Verify email addresses

$0.0168/request

### Email Verifier

Verify an email address and return deliverability, confidence and risk signals.

Hunter

Verify email addresses

$0.0273/request

### Email Validation

Validate an email address and return deliverability, status and risk information.

ZeroBounce

## Questions about Email validation API

### How much do email validation API tools cost?

Prices run from $0.0025/request to $0.0273/request. You pay per use from one prepaid wallet with no subscription. Your agent sees the exact price before each run, and connecting your first agent adds $1 of trial credit.

### What is the best email validation API for an AI agent?

It depends on what you need back and how much you will run it. Email Verification (Kitt AI, $0.0025/request): Check one email address for deliverability and DNS or SMTP risks. Verify an email address is deliverable (MillionVerifier, $0.0025/request): Verify an email address in real time. Verify an email address is deliverable (LeadMagic, $0.0088/request): Check an email is real and deliverable, and whether its domain is catch-all. Your agent can inspect the closest match and see its exact price before it runs.

## Learn more about email validation

Ask your agent to interpret validation evidence in the context of the action you plan to take. A useful result separates deliverable, risky, unknown and policy-sensitive cases instead of forcing every address into yes or no.

**What does an email validation API actually check?**

Validation can assess syntax, domain and mail-server signals, mailbox availability and risk indicators such as disposable or catch-all domains. The exact evidence varies, so ask your agent to explain what the returned status supports and what remains uncertain.

**Do not turn unknown into invalid**

Catch-all, protected or temporarily unreachable domains may not support a definitive mailbox result. Keep these separate from clearly invalid addresses and decide whether the planned use justifies further review.

**Validate close to the time of use**

Mailbox and domain states change. For material outreach or account workflows, ask the agent to verify the final deduplicated list shortly before use and preserve the validation time.

**Example prompt**

This example asks for an interpretable result rather than a binary label.

Example prompt to give your agent

`Use Scrollport to validate [EMAIL ADDRESS]. Explain the deliverability status, catch-all or disposable signals, and any uncertainty in plain language. Tell me what the result supports for [INTENDED USE], but do not send a message or treat an unknown result as invalid. Show me the price before the paid run.`

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Canonical page: https://scrollport.com/tools/email-validation-api