What it entails

Email checks profile longevity and activity via first_seen and last_seen, flag never-seen or disposable addresses, validate format and MX records, classify provider type and free vs. paid accounts, and analyze user-portion randomness. They build a holistic maturity and legitimacy score for each address.

Why it works

Fraudsters spin up newly created, disposable, or invalid emails to evade linkage and detection. Randomized or stale addresses with poor deliverability are strong indicators of one-time scam setups.

Checks

The following are the distinct IDs and types of checks that are included in the Email Check Package.

EMAIL_FREE_ACCOUNT

Whether the email account is free.

Value	Name	Description
`TRUE`	Free email provider	A medium-risk email address, often tied to free email services.
`FALSE`	Non-free email provider	The email address is not from a free provider, indicating a potentially legitimate account.
`NONE`	No email address provided	No email address provided.

EMAIL_USER_PORTION

Pattern of the email’s user portion.

Value	Name	Description
`ALPHANUMERIC_RANDOM`	Alphanumeric random user portion	The user portion appears random or has a mix of letters and numbers that don’t clearly represent a name or organization.
`NAME_OBSCURED`	Name obscured in user portion	The user portion contains a name that is obscured or altered, which may indicate an attempt to hide true identity.
`ROLE_BASED`	Role-based email address	The user portion refers to a specific role or department, suggesting shared or non-personal use.
`KEYWORD_THEMED`	Keyword-themed email mailbox	The user portion includes a meaningful word or phrase unrelated to personal identifiers but thematic in nature.
`SHORT_SIMPLE`	Short and simple email mailbox	Short, simple user portions, often seen in personal or early email accounts.
`NAME_BASED`	Name-based email mailbox	The user portion contains the user’s name, initials, or recognizable personal identifier.
`NONE`	No email address provided	No email address provided.

EMAIL_NEVER_SEEN

Whether the email has ever been seen before.

Value	Name	Description
`TRUE`	Email address never seen	The email address has never been seen before.
`FALSE`	Email address seen	The email address has been seen before.
`NONE`	No email address provided	No email address provided.

EMAIL_TYPE

Type of email provider.

Value	Name	Description
`DISPOSABLE`	Disposable email provider	A very high-risk email address, as disposable emails are frequently used for fraudulent activities.
`BUSINESS`	Business email provider	Business emails are not typically used for consumer-level activities.
`PERSONAL`	Personal email provider	Personal or consumer-level account.
`GOVERNMENT`	Government email provider	A medium-risk email address, often tied to government institutions.
`EDUCATIONAL`	Educational email provider	Educational emails are not typically used for consumer-level activities.
`UNKNOWN`	Unknown email provider	The email provider type could not be determined, so the risk level is slightly elevated.
`NONE`	No email address	No email address provided.

EMAIL_DELIVERABILITY

Deliverability status of the email.

Value	Name	Description
`NONE`	No email address provided	No email address provided.
`FALSE`	Email address undeliverable	The email address is undeliverable, which could indicate a potential fraud attempt.
`RISKY`	Email address deliverability risky	The email address deliverability is risky, which could indicate a potential fraud attempt.
`UNKNOWN`	Email address deliverability unknown	The email address deliverability status is unknown, which could indicate a potential fraud attempt.
`TRUE`	Email address deliverable	The email address is deliverable and appears to be legitimate.

EMAIL_FIRST_SEEN

When the email was first created.

Value	Name	Description
`LAST_DAY`	Email address created within the last day	The email address was created within the last day.
`LAST_WEEK`	Email address created within the last week	The email address was created within the last week.
`LAST_MONTH`	Email address created within the last month	The email address was created within the last month.
`LAST_YEAR_1`	Email address created within the last year	The email address was created within the last year.
`LAST_YEAR_2`	Email address created within the last two years	The email address was created within the last two years.
`LAST_YEAR_3`	Email address created within the last three years	The email address was created within the last three years.
`LAST_YEAR_4`	Email address created within the last four years	The email address was created within the last four years.
`BEYOND_YEAR_5`	Email address created more than four years ago	The email address was created more than five years ago.
`NONE`	No email address available	No email address available.

EMAIL_NO_MX_RECORD

Presence of MX DNS record.

Value	Name	Description
`TRUE`	No MX record	The email address does not have an MX record, which could indicate a potential fraud attempt.
`FALSE`	MX record present	The email address has an MX record, indicating it is likely valid.
`UNKNOWN`	MX record unknown	The email address MX record status is unknown, which carries some risk.
`NONE`	No email address provided	No email address provided.

EMAIL_LAST_SEEN

When the email was last observed.

Value	Name	Description
`LAST_DAY`	Email address last seen within the last day	The email address was last seen within the last day.
`LAST_WEEK`	Email address last seen within the last week	The email address was last seen within the last week.
`LAST_MONTH`	Email address last seen within the last month	The email address was last seen within the last month.
`LAST_YEAR_1`	Email address last seen within the last year	The email address was last seen within the last year.
`LAST_YEAR_2`	Email address last seen within the last two years	The email address was last seen within the last two years.
`LAST_YEAR_3`	Email address last seen within the last three years	The email address was last seen within the last three years.
`LAST_YEAR_4`	Email address last seen within the last four years	The email address was last seen within the last four years.
`BEYOND_YEAR_5`	Email address last seen more than four years ago	The email address was last seen more than five years ago.
`NONE`	No email address available	No email address available.

EMAIL_INVALID

Validity of email format.

Value	Name	Description
`TRUE`	Invalid email address	The email address is invalid, which could indicate a potential fraud attempt.
`FALSE`	Valid email address	The email address is valid and appears to be legitimate.
`NONE`	No email address provided	No email address provided.