VouchleyDisposable email database
Is inboxkitten.com a disposable email?
Quick answer
inboxkitten.com is operated by InboxKitten, a disposable / temporary email service. Signups using this domain are almost always throwaway. Block at signup if your product depends on long-term email reachability.
About InboxKitten
InboxKitten is an open-source disposable inbox project — the code is public and the hosted instance offers free, registration-less throwaway inboxes. Because it's open source, the same software also runs on domains beyond the original.
What it’s typically used for
Throwaway confirmations, plus self-hosted clones used by more technical users to create disposable inboxes on domains no blocklist has seen.
Should you block inboxkitten.com in your signup form?
Block the known domain, but the open-source angle is the real lesson: static lists can't track self-hosted clones, which is why MX patterns, domain age, and behavioral signals have to carry part of the detection.
How to detect inboxkitten.com in code
You don’t need to maintain a hand-rolled list. Vouchley returns a disposable flag (and the rest of the signup score) on every check:
curl -X POST https://api.vouchley.getrevlio.com/v1/verify \
-H "Authorization: Bearer vch_live_..." \
-H "Content-Type: application/json" \
-d '{
"email": "anyone@inboxkitten.com",
"ip_address": "203.0.113.10"
}'
# Response:
# {
# "score": 12,
# "recommendation": "block",
# "email": { "disposable": true, "valid": true },
# ...
# }Block disposable signups in one API call.
Vouchley keeps the disposable list current — including alias domains and new providers — so you never have to maintain it yourself.