Yes. You can verify any @Crispr.com address in real time with a direct SMTP handshake that provides 99.7% accuracy. Crispr.com is operated by CRISPR Therapeutics, runs 1 mail server, enforces 1 of 3 authentication standards, and is currently not responding to SMTP.
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.
crispr.com publishes 1 MX record. The primary mail exchanger is , hosted by Self-hosted, and it is currently not responding to SMTP. Mail is routed through these servers in priority order, lowest number first.
| Priority | Hostname | IP | Status |
|---|---|---|---|
| 0 | No Response |
220 crispr.com ESMTP Service ReadyYes. crispr.com is a valid email domain, operated by CRISPR Therapeutics. Addresses are persistent and real mail reaches a genuine recipient. Individual mailboxes still go stale, so verify each one before you send.
A live SMTP handshake connects to Crispr.com's mail server and asks whether the mailbox exists using the RCPT TO command, without ever transmitting a message. The recipient never sees the check.
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.
People leave companies. Verification flags crispr.com mailboxes deactivated since you collected them.
Expired or full crispr.com inboxes hard-bounce. A live SMTP check catches them before you hit send.
Low bounce rates keep you trusted by crispr.com mail servers and the major mailbox providers.
Verified contacts mean your CRM, lead scoring, and routing all run on addresses that reach a person.
Crispr.com is CRISPR Therapeutics, registered through GoDaddy.com, LLC and first seen Mar 18, 2006.
CRISPR Therapeutics (crispr.com) is a gene-editing company headquartered in Zug, Switzerland with offices in Cambridge, Massachusetts. CRISPR Therapeutics develops gene-based medicines using the CRISPR/Cas9 technology for serious diseases including sickle cell disease, beta thalassemia, and various cancers. The company received the first FDA approval for a CRISPR gene therapy.
CRISPR Therapeutics implements strict email authentication on the crispr.com domain with SPF, DKIM, and DMARC enforcement. As a pioneering gene therapy company handling highly sensitive clinical and genetic data, CRISPR maintains rigorous email security to protect proprietary gene-editing research and patient trial information.
SMTP verification of crispr.com addresses returns definitive responses for valid and invalid mailboxes. The domain does not function as catch-all. CRISPR's enterprise mail infrastructure implements strict rate limiting on inbound SMTP connections.
For partners communicating with CRISPR Therapeutics employees, strong sender authentication is essential. Gene therapy companies enforce strict email filtering. Full SPF, DKIM, and DMARC compliance ensures reliable inbox delivery to crispr.com addresses.
Upload a CSV or TXT list of Crispr.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 Crispr.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.
Yes, crispr.com is the official corporate email domain for CRISPR Therapeutics. It is used for internal business communications and is not available for public registration.
No, crispr.com is a corporate email domain belonging to CRISPR Therapeutics, used exclusively by employees and authorized personnel.
crispr.com uses enterprise-grade mail infrastructure. Check the MX records section above for specific mail server details.
B2B marketing to crispr.com requires proper consent. Corporate domains may use catch-all configurations, so verify individual addresses before sending.
Corporate domains like crispr.com may use catch-all configurations. Use BulkEmailChecker's advanced verification to detect catch-all behavior.
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 crispr.com's mail servers, the same engine that has verified billions of addresses since 2012.
Other corporate email domains we have audited.