Disposable ยท Do Not Send

Block Disposable Emails from Mailcat.biz

Mailcat.biz is a disposable email service. Stop fake signups and protect your platform with real-time detection.

SMTP Responsive MX 1 Auth 1/3 Disposable
Mailcat.biz
BLOCKED
Disposable Email Service

Addresses expire within minutes. Block these signups before they reach your database.

Expires in minutes
No real recipient
Inflates metrics
Fraud signal
Primary tool for trial abuse
Linked to multi-accounting
Block with the API
Military-Grade Encryption
ISO 27001
SOC 2 Type II
GDPR
CCPA
HIPAA

Deliverability

4 signals
Deliverability5/100
Risk Score95
Blacklists3/8
Domain Age1 years

Infrastructure

5 signals
SMTP StatusResponsive
MX Records1
Authentication1/3
Accepts MailYes
Catch-AllNot detected

Classification

4 signals
Domain TypeDisposable Email
DisposableYes
Free ProviderNo
Mail Providergeneric-isp.com

Disposable Email Check

May 29, 2026

Yes. Mailcat.biz is a known disposable email service, so block it at signup. Mailboxes expire within minutes and any existing Mailcat.biz account should be treated as a fraud signal.

Valid providerNoNo
Mail Providergeneric-isp.com
MX Records1Active
Authentication1/3Partial

Mailcat.biz Key Facts

Email Domain
Mail Providergeneric-isp.com
Domain TypeDisposable Email
MX Records1 mx.generic-isp.com
SMTP StatusResponsiveResponsive
SPF / DKIM / DMARCPass / Missing / Missing
Catch-AllNot detected
DisposableYesYes
Domain Age1 years (since 2024)
Registrar101domain GRS Limited
Last VerifiedMay 29, 2026

How to read your Mailcat.biz verification result

Every check returns one of three clear outcomes so you know exactly what to do with the address.

Passed - Safe to Send

The mailbox exists and accepts mail. Send with confidence, the address is deliverable.

Failed - Do Not Send

The mailbox does not exist, is disposable, or will hard-bounce. Remove it to protect your sender reputation.

Unknown - Use Caution

The server is catch-all or greylisting, so existence cannot be confirmed. Send selectively and watch engagement.

What are Mailcat.biz's MX records?

mailcat.biz publishes 1 MX record. The primary mail exchanger is mx.generic-isp.com, hosted by generic-isp.com, and it is currently reachable and answering SMTP. Mail is routed through these servers in priority order, lowest number first.

MX Records

1 record
PriorityHostnameIPStatus
10 mx.generic-isp.com 142.93.237.125 Reachable

Infrastructure

Responsive
SMTP StatusResponsiveResponsive
Primary MXmx.generic-isp.com
Mail Providergeneric-isp.com
Accepts MailYes
Catch-AllNot detected
220 mx.generic-isp.com ESMTP Welcome

Can you verify Mailcat.biz email addresses?

No. mailcat.biz is a disposable email service. Its mailboxes are throwaway and expire within minutes, so addresses on this domain are not safe to accept or send to. Block it at signup and treat existing mailcat.biz accounts as a fraud signal.

Why block Mailcat.biz

Disposable

Addresses on Mailcat.biz are throwaway inboxes that expire within minutes. Accepting them inflates your user count, wastes onboarding spend, and damages sender reputation when the mailboxes bounce.

Accuracy

99.7%

Each address runs through 30+ checks including SMTP existence, catch-all detection, role-account filtering, and disposable matching. The same engine has verified billions of addresses since 2012.

Why verify Mailcat.biz emails before you send?

Every unverified address is a gamble. Here is what happens when you skip verification and mail a list that has not been cleaned.

Inflated user counts

Disposable signups skew your activation rate, growth metrics, and analytics with users who never come back.

Wasted onboarding

Welcome series and drip campaigns all fire at a mailcat.biz inbox that has already been discarded.

Fraud and trial abuse

Throwaway addresses are the standard tool for free-trial farming, multi-accounting, and bot signups.

Damaged sender reputation

Mail to expired mailcat.biz inboxes bounces, and bounce rate is one of the first signals mailbox providers punish.

Who operates Mailcat.biz?

Mailcat.biz is disposable email, registered through 101domain GRS Limited and first seen Oct 15, 2024.

Registration (WHOIS)

.biz
Registrar101domain GRS Limited / IANA 1011
RegisteredOct 15, 2024 / 1 years old
UpdatedOct 24, 2025
ExpiresOct 15, 2026
RegistrantUNITED STATES
Tech ContactUNITED STATES
ns2.101domain.comns1.101domain.com

Domain Profile

Disposable Email
Domainmailcat.biz
TypeDisposable Email
Mail Providergeneric-isp.com
SPFPassPass
DKIMMissingMissing
DMARCMissingMissing

Mailcat.biz is disposable email, classified as disposable email running on generic-isp.com. It operates 1 mail server and currently accepts SMTP connections.

Because mailcat.biz is disposable, every address should be blocked at signup. Mailboxes expire within minutes, so any existing mailcat.biz account in your database is a strong fraud signal worth removing.

How do you verify Mailcat.biz emails in bulk?

Upload a CSV or TXT list of Mailcat.biz addresses to the bulk email verifier. Every address runs through a live SMTP handshake plus catch-all, role-account and disposable detection, and you download a clean list when processing completes. For real-time checks at signup, use the real-time email verification API.

1

Upload your list

CSV or TXT with one email per line. No formatting needed.

2

SMTP verification runs

Each Mailcat.biz address is checked with a live server handshake.

3

Download clean results

Get a verified list with status codes, risk flags, and catch-all detection.

Verify Mailcat.biz emails from $0.0001 each

Pay as you go. No subscriptions, and credits never expire.

10,000 Verifications
$9.95
$0.00099 per email
One-time payment. No contracts.
Get Started
25,000 Verifications
$23.95
$0.00095 per email
One-time payment. No contracts.
Get Started
Popular
50,000 Verifications
$44.95
$0.00089 per email
One-time payment. No contracts.
Get Started
100,000 Verifications
$74.95
$0.00075 per email
One-time payment. No contracts.
Get Started

Frequently asked questions about Mailcat.biz

Everything about verifying email at this domain.

While mailcat.biz functions as an email domain, it is classified as a disposable or temporary email service. Emails sent to mailcat.biz addresses are short-lived and should not be trusted.

Yes, mailcat.biz is a known disposable email provider. Addresses on this domain are temporary and should be blocked in registration forms to prevent fake signups.

mailcat.biz operates its own temporary mail infrastructure designed for disposable email addresses. Check the MX records section for details.

No, you should not send marketing emails to mailcat.biz addresses. Disposable addresses are temporary and will stop functioning. Sending to these domains wastes resources.

While mailcat.biz addresses may pass SMTP verification, they should be flagged and rejected. Use BulkEmailChecker disposable domain detection to block mailcat.biz automatically.

Upload a CSV or TXT list to the bulk email verifier. Every address runs through 30+ checks including SMTP existence, catch-all detection, role-account, and disposable matching. Processing time depends on list size.

99.7% accurate using a direct SMTP handshake with mailcat.biz's mail servers, the same engine that has verified billions of addresses since 2012.