FINDING and COMMENT_CODE Values

Finding "V"

A value of V in the FINDING field indicates that the submitted email address is valid, properly constructed, and legitimate.

COMMENT COMMENT_CODE Possible Suggestion? Description
valid V Yes The email address passed the majority of our SafeToDeliver process however it cannot be 100% confirmed as deliverable.
valid SafeToDeliver VS No The email address passed 100% of the SafeToDeliver process.
customer override CO Yes Comment applied to cases where a URL parameter has disabled a flagging feature that would have deemed the email address as blocked/invalid.

Finding "W"

A value of W in the Finding field indicates that the submitted address is flagged as a warning and should not be accepted.

COMMENT COMMENT_CODE Possible Suggestion? Description
bad domain DC Yes The email address is associated with a domain with inactive mail servers.
bogus XB No The email address has a restricted handle and/or domain which is a likely suspect for a fake or undesirable entry.
client restricted XC No The email address matches an entry on a user-provided suppression.
disposable XD Yes The email address originates from a website that provides temporary email addresses.
domain specific syntax error XH No The email address failed a domain specific rule. An example of a domain specific rule is gmail.com does not allow underscores in the address handle.
EMPS suppression XE No The email address is on the DMA’s "Do Not Email List" (Electronic Mail Preference Service). Those who have registered have requested to be removed from national marketing lists.
FCC wireless XW No The email address originates from an FCC wireless domain.
frequent complainer XF No The email address owner is known to submit spam/abuse complaints.
invalid email account B Yes The email address failed the deliverability check. Our proprietary algorithm utilizes our knowledge base of confirmed undeliverable email addresses and email-specific activity to determine if the email address is valid and available to accept email.
language XL No The email address contains derogatory words.
problematic XP Yes The email address is considered as problematic. This includes spamtraps and potentially toxic addresses.
role account XR No The email address has a non-personal handle such as sales@, info@ and webmaster@. For example, sales@example.com.

Finding "E"

A value of E in the Finding field indicates that the submitted address contains an error and is invalid.

COMMENT COMMENT_CODE Possible Suggestion? Description
missing@ A1 Yes The email address is missing the "@" sign. For example: "nemohotmail.com"
missing username A2 No The email address is missing the handle portion of the address. For example: "@hotmail.com"
missing domain A3 No The email address is missing the domain portion of the address. For example: "nemo@".
multiple @ A4 Yes The email address has multiple "@" signs. For example: "nemo@@hotmail.com".
bad character C1 Yes The email address has prohibited characters such as a bracket "["or other unusual characters.
double .com CC Yes The email address has multiple ‘.com’s at the end of the address. For example: "nemo@aol.com.com"
bad top level domain DT Yes The email address is missing the top domain, or the top level domain is invalid.
bad length LN No The email address has less than 6 characters or over 100 characters.
contains multiple typos ML Yes The email address does not meet RFC standards and/or has multiple errors.
ends with period P2 Yes The email address ends with a period. For example: "nemo@hotmail.com."
double period in domain P3 Yes The email address has multiple periods in the domain. For example: "nemo@hotmail..com"
period following @ P4 Yes The email address has a period after the '@' sign. For example: "nemo@.hotmail.com"
starts with a period P5 Yes The email address starts with a period. For example: ".nemo@hotmail.com"