Email domain

Is 5semail.com a disposable email?

Yes. 5semail.com appears in our disposable-email domain list. This is a domain-level signal, not proof that a particular person or mailbox is fraudulent.

Domain check Listed

5semail.com

  • Disposableyes
  • Free providerno
  • Receives mailyes
  • Mail servers1 found
  • SPFnone
  • DMARCnone
Risk score90
  • disposable_domain5semail.com hands out throwaway inboxes.

DNS facts

Domain
5semail.com
MX records
smtp.oneb.net
SPF
Not published
DMARC
Not published
Checked
2026-10-21

Check another address →

Throwaway domains on the same mail servers

These listed domains share mail infrastructure with 5semail.com. Shared hosting does not establish common ownership.

Block it in code

Stop 5semail.com signups.

Check each new address and refuse when disposable is true. One call covers 5semail.com, its sister domains and new throwaway brands.

curl https://veqen-app.com/v1/email/check \
  -H "Authorization: Bearer $VEQEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"email": "someone@5semail.com"}'
import os, requests

r = requests.post(
    "https://veqen-app.com/v1/email/check",
    headers={"Authorization": f"Bearer {os.environ['VEQEN_API_KEY']}"},
    json={"email": "someone@5semail.com"},
    timeout=10,
)
result = r.json()
print(result["risk"]["verdict"], result["risk"]["reasons"])
const res = await fetch("https://veqen-app.com/v1/email/check", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.VEQEN_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({"email": "someone@5semail.com"}),
});
const result = await res.json();
console.log(result.risk.verdict, result.risk.reasons);
Questions

About 5semail.com

Is 5semail.com a disposable email domain?

Yes. 5semail.com appears in our disposable-email domain list. This is a domain-level signal, not proof that a particular person or mailbox is fraudulent.

How do I block 5semail.com at signup?

Check the domain of each new address. With the Veqen API, call /v1/email/check and refuse when disposable is true; that also covers 5semail.com's sister domains and new ones.

Where does 5semail.com email go?

Its mail is handled by smtp.oneb.net. 30 other throwaway domains use the same mail servers.

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