Is 1-8.biz a disposable email domain?
Yes: it is on the open disposable-domain list.
try:
Accepts mail
- mail hosts
- mail.protonmail.ch, mailsec.protonmail.ch
- provider
- proton
- spf record
- no
- dmarc policy
- none published
- disposable domain
- yes
- free consumer provider
- yes
Is 1-8.biz disposable?
1-8.biz appears on the open list of disposable providers, the burner services that give out throwaway inboxes on demand.
About the domain
Its mail is handled by Proton Mail.
How Spaw treats addresses at 1-8.biz
Addresses at 1-8.biz are reported risky with reason disposable and their mailbox is never probed, because the answer would be meaningless by the time you send. Most signup flows should ask for a different address.
More checks for 1-8.biz
checked 2026-09-03 · sources: live-dns 2026-09-03 · disposable-domains 2026-09-02 · free-provider-domains 2026-09-02 · mx-provider-patterns 2026-09-03
Need this at scale?
The Spaw API runs the same checks plus mailbox-level SMTP verification, batch and bulk endpoints, and list monitoring — 10 free lookups a month, no card required.