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Email Verifier: Syntax, MX & Disposable-Domain Score

Try for free

Validates email addresses without ever sending mail: syntax, live MX record, disposable-domain and role-account checks, rolled into a transparent 0-100 confidence score with a per-check breakdown. Never claims a mailbox was confirmed to exist.

Pricing

Pay per usage

Rating

0.0

(0)

Developer

Catalyst

Actor stats

Bookmarked

Total users

Monthly active users

a day ago

Last modified

Categories

Lead generation

Developer tools

Required

The email address that was processed, as supplied in the input.

Type:string

Example:

person@example.com

Syntax valid

syntaxValid

Required

Whether the address matches a valid email address shape (RFC 5322 practical subset). Every other check is skipped when this is false.

Type:boolean

Example:

true

MX found

mxFound

Required

Whether the domain currently has at least one live mail server (MX record). Does NOT mean any specific mailbox at that domain exists.

Type:boolean

Example:

true

MX hosts

mxHosts

Required

The domain's mail server hostnames, in the order DNS returned them. Empty when mxFound is false.

Type:array

Example:

[
  "aspmx.l.google.com"
]

Disposable domain

isDisposableDomain

Required

Whether the domain matches the bundled list of known disposable/throwaway email providers.

Type:boolean

Example:

false

Role account

isRoleAccount

Required

Whether the local part (before the @) matches a known role/function pattern (info@, support@, noreply@, etc.) rather than an individual's mailbox.

Type:boolean

Example:

false

Confidence score

confidenceScore

Required

0-100. Rewards valid syntax (30), a live MX record (40), a non-disposable domain (20) and a non-role local part (10). This is a graded signal built from the checks in checksRun, never a claim that the mailbox itself was confirmed to exist.

Type:integer

Example:

Checks run

checksRun

Required

Exactly which checks completed for this row, in order (subset of syntax, mx, disposable, role). A syntax-invalid address stops after ["syntax"] since domain-level checks have nothing to check.

Type:array

Example:

[
  "syntax",
  "mx",
  "disposable",
  "role"
]

Charged

charged

Required

Whether this row was billed under pay-per-event. Always false while the Actor has no price set.

Type:boolean

Example:

false

Error

error

Optional

Set only when the MX lookup itself failed for reasons unrelated to the domain (e.g. a transient DNS failure). Empty on every other row, including a confirmed syntax-invalid address.

Type:string

Example:

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