Block: MillionVerifier Block

Verify the deliverability of an email address and check remaining account credits through the MillionVerifier API. Authenticate with a MillionVerifier API key.

Overview

Property	Value
Type	`millionverifier`
Category	tools
Color	`#0EA5E9`

When to Use

Validate that an email address is deliverable before sending campaigns or transactional mail.
Filter out invalid, disposable, or risky email addresses from a list before enrichment or outreach steps.
Check how many MillionVerifier verification credits remain on an account before kicking off a bulk verification workflow.
Gate downstream workflow steps on whether an email passed or failed verification.
Automate periodic credit-balance checks so a workflow can alert when credits are running low.
Combine with lead-capture or CRM blocks to verify new contacts at the moment they are created.

Configuration

Operation

Selects which MillionVerifier API action to run. Required.

Label	ID
Verify email	`millionverifier_verify_email`
Get credits	`millionverifier_get_credits`

Default: millionverifier_verify_email.

Email

Type: short-input
Placeholder: john@example.com
Condition: visible only when Operation is millionverifier_verify_email

The email address to verify. Accepts a literal value or a reference such as {{previousBlock.email}}.

API Key

Type: short-input (password)
Required: yes

Your MillionVerifier API key. Store it as an environment secret and reference it with {{MILLION_VERIFIER_API_KEY}} rather than pasting the raw value.

Inputs & Outputs

Inputs

operation (string) — Operation to perform (millionverifier_verify_email or millionverifier_get_credits)
apiKey (string) — MillionVerifier API key
email (string) — Email address to verify (required for millionverifier_verify_email only)

Outputs

data (json) — Full result object returned by MillionVerifier. For email verification this includes fields such as email, result, subresult, free, role, disposable, and did_you_mean. For get-credits it contains the raw credits payload.
metadata (json) — Condensed identifiers extracted from the response.
- For millionverifier_verify_email: { email: string, result: string }
- For millionverifier_get_credits: { credits: number }

Tools

MillionVerifier Verify Email (millionverifier_verify_email) — Sends a GET request to https://api.millionverifier.com/api/v3/ with the api and email query parameters. Returns the full verification result object and a metadata summary containing the email address and the verification result string.

MillionVerifier Get Credits (millionverifier_get_credits) — Sends a GET request to https://api.millionverifier.com/api/v3/credits with the api query parameter. Returns the raw credits payload and a metadata object with the numeric credits value representing remaining verification credits.

YAML Example

# Example 1 — verify a single email address
millionverifier_1:
  type: millionverifier
  name: "Verify Email"
  inputs:
    operation: "millionverifier_verify_email"
    apiKey: "{{MILLION_VERIFIER_API_KEY}}"
    email: "{{lead_capture_1.email}}"
  connections:
    outgoing:
      - target: condition_1

# Example 2 — check remaining credits
millionverifier_2:
  type: millionverifier
  name: "Check Credits"
  inputs:
    operation: "millionverifier_get_credits"
    apiKey: "{{MILLION_VERIFIER_API_KEY}}"
  connections:
    outgoing:
      - target: slack_1

MillionVerifier Block