Email domain

Is mailfirst.icu a disposable email?

Yes. mailfirst.icu 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

mailfirst.icu

  • Disposableyes
  • Free providerno
  • Receives mailyes
  • Mail servers1 found
  • SPFpublished
  • DMARCpublished
Risk score90
  • disposable_domainmailfirst.icu hands out throwaway inboxes.

DNS facts

Domain
mailfirst.icu
MX records
mail.mailfirst.icu
SPF
v=spf1 ip4:198.199.65.120 a mx ~all
DMARC
v=DMARC1; p=none; aspf=r; sp=none
Checked
2026-10-21

Check another address →

Block it in code

Stop mailfirst.icu signups.

Check each new address and refuse when disposable is true. One call covers mailfirst.icu, 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@mailfirst.icu"}'
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@mailfirst.icu"},
    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@mailfirst.icu"}),
});
const result = await res.json();
console.log(result.risk.verdict, result.risk.reasons);
Questions

About mailfirst.icu

Is mailfirst.icu a disposable email domain?

Yes. mailfirst.icu 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 mailfirst.icu 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 mailfirst.icu's sister domains and new ones.

Where does mailfirst.icu email go?

Its mail is handled by mail.mailfirst.icu.

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