Yes. Guerrillamail.com is a known disposable email service, so block it at signup. Mailboxes expire within minutes and any existing Guerrillamail.com account should be treated as a fraud signal.
Every check returns one of three clear outcomes so you know exactly what to do with the address.
The mailbox exists and accepts mail. Send with confidence, the address is deliverable.
The mailbox does not exist, is disposable, or will hard-bounce. Remove it to protect your sender reputation.
The server is catch-all or greylisting, so existence cannot be confirmed. Send selectively and watch engagement.
guerrillamail.com publishes 1 MX record. The primary mail exchanger is mail.guerrillamail.com, hosted by guerrillamail.com, and it is currently reachable and answering SMTP. Mail is routed through these servers in priority order, lowest number first.
| Priority | Hostname | IP | Status |
|---|---|---|---|
| 0 | mail.guerrillamail.com | 178.162.170.166 | Reachable |
220 mail.guerrillamail.com SMTP Guerrilla(v1.6.1) #115999974 (128) 2026-06-05T16:10:36ZNo. guerrillamail.com 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 guerrillamail.com accounts as a fraud signal.
Addresses on Guerrillamail.com are throwaway inboxes that expire within minutes. Accepting them inflates your user count, wastes onboarding spend, and damages sender reputation when the mailboxes bounce.
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.
Every unverified address is a gamble. Here is what happens when you skip verification and mail a list that has not been cleaned.
Disposable signups skew your activation rate, growth metrics, and analytics with users who never come back.
Welcome series and drip campaigns all fire at a guerrillamail.com inbox that has already been discarded.
Throwaway addresses are the standard tool for free-trial farming, multi-accounting, and bot signups.
Mail to expired guerrillamail.com inboxes bounces, and bounce rate is one of the first signals mailbox providers punish.
Guerrillamail.com is disposable email, registered through Cloudflare, Inc. and first seen Nov 29, 2006.
Guerrilla Mail is a well-established disposable email service that has been operating since 2006. Unlike many disposable services, Guerrilla Mail offers several advanced features including the ability to compose and send emails (not just receive), email encryption via OpenPGP, and a self-destructing email feature where messages are automatically deleted after one hour. The service is operated as a free tool and has gained a reputation in the privacy community.
One of the distinguishing characteristics of Guerrilla Mail is its extensive network of alias domains. In addition to guerrillamail.com, the service operates guerrillamail.net, guerrillamail.org, sharklasers.com, grr.la, guerrillamailblock.com, pokemail.net, and spam4.me — all of which route to the same infrastructure. This proliferation of domains is specifically designed to make blocking more difficult, requiring verification systems to maintain comprehensive lists of all associated domains.
Guerrilla Mail provides users with a scrambled email address by default, generating random addresses to reduce the chance of inbox collision. The service supports attachments up to 150MB, making it more full-featured than many disposable alternatives. Guerrilla Mail's MX records point to its own infrastructure, and the service accepts all incoming mail regardless of the specific address used.
For email list hygiene and signup protection, all Guerrilla Mail domains should be blocked. BulkEmailChecker maintains an up-to-date database of all known Guerrilla Mail alias domains and automatically flags them during verification. The presence of any Guerrilla Mail domain in your email list indicates fraudulent signups that should be removed to protect your sender reputation and deliverability metrics.
Upload a CSV or TXT list of Guerrillamail.com 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.
CSV or TXT with one email per line. No formatting needed.
Each Guerrillamail.com address is checked with a live server handshake.
Get a verified list with status codes, risk flags, and catch-all detection.
Pay as you go. No subscriptions, and credits never expire.
Everything about verifying email at this domain.
While guerrillamail.com is a functioning email domain, it is classified as a disposable or temporary email service. Emails sent to guerrillamail.com addresses are automatically deleted after one hour.
Yes, guerrillamail.com is a known disposable email provider with multiple alias domains including sharklasers.com, grr.la, and pokemail.net. All should be blocked to prevent fake signups.
Guerrilla Mail operates its own mail infrastructure that accepts all incoming email. The same servers handle mail for all Guerrilla Mail alias domains.
No, you should not send marketing emails to guerrillamail.com addresses. Messages are deleted after one hour, making these addresses useless for any ongoing communication.
Guerrillamail.com addresses will pass SMTP verification as it is a catch-all domain. Use BulkEmailChecker's disposable detection to flag guerrillamail.com and all its alias domains.
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 guerrillamail.com's mail servers, the same engine that has verified billions of addresses since 2012.
Other disposable email domains we have audited.