mailbox_disabled
The mailbox exists but its provider has disabled it
The server recognised the address but reported the account as disabled, suspended or deactivated. Mail to it is rejected.
- appears in
- reason
- verdict
- undeliverable
- credits
- Free. Undeliverable verdicts never cost a credit.
What it means
Unlike a mailbox that was never created, a disabled mailbox was real once: a closed account, a suspended user, a deprovisioned employee. The provider still rejects mail for it, so the verdict is undeliverable.
smtp_reason is disabled. Like mailbox_not_found, the address joins your suppression list.
What to do
Remove the address. Disabled accounts rarely come back, and when they do the owner will typically subscribe again.
Example response
{
"email": "[email protected]",
"deliverable": "undeliverable",
"reason": "mailbox_disabled",
"smtp_reason": "disabled",
"mailbox_exists": false
}Abbreviated: a real answer carries all 27 fields, listed in the verify-email reference.
Related
- invalid_syntax · the input does not parse as an email address
- invalid_local_part · the username breaks the rules its own provider enforces
- no_mx_records · the domain has no mail servers at all
- null_mx · the domain declares that it never accepts mail
- mx_unresolvable · the mail servers the domain points at do not exist
- mailbox_not_found · the mail server rejected the mailbox during the handshake
- suppressed · the address is on your account's suppression list
- All verdict reasons
- Verdicts and the risk score
- API reference
markdown version: /docs/reasons/mailbox_disabled.md