Yes. You can verify any @Supabase.com address in real time with a direct SMTP handshake that provides 99.7% accuracy. Supabase.com is operated by Supabase Inc., runs 5 mail servers, enforces 3 of 3 authentication standards, and is currently 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.
supabase.com publishes 5 MX records. The primary mail exchanger is aspmx.l.google.com, hosted by Google Workspace, and it is currently reachable and answering SMTP. Mail is routed through these servers in priority order, lowest number first.
| Priority | Hostname | IP | Status |
|---|---|---|---|
| 1 | aspmx.l.google.com | 172.253.122.26 | Reachable |
| 5 | alt2.aspmx.l.google.com | 172.253.116.26 | Reachable |
| 5 | alt1.aspmx.l.google.com | 108.177.123.27 | Reachable |
| 10 | alt3.aspmx.l.google.com | 192.178.223.26 | Reachable |
| 10 | alt4.aspmx.l.google.com | 173.194.76.27 | Reachable |
220 mx.google.com ESMTP 6a1803df08f44-8ccea21f50bsi80100476d6.431 - gsmtpYes. supabase.com is a valid email domain, operated by Supabase Inc.. 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 Supabase.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 supabase.com mailboxes deactivated since you collected them.
Expired or full supabase.com inboxes hard-bounce. A live SMTP check catches them before you hit send.
Low bounce rates keep you trusted by supabase.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.
Supabase.com is Supabase Inc., registered through Amazon Registrar, Inc. and first seen Sep 24, 2017.
Supabase Inc. (supabase.com) is an open-source backend-as-a-service platform headquartered in San Francisco, California. Supabase provides an open-source alternative to Firebase, offering PostgreSQL databases, authentication, instant APIs, edge functions, real-time subscriptions, and storage for application developers.
Supabase implements email authentication on the supabase.com domain with SPF, DKIM, and DMARC enforcement. As a developer platform handling database credentials and authentication infrastructure, Supabase maintains strong email security to prevent phishing attacks targeting developer accounts and API keys.
SMTP verification of supabase.com addresses returns definitive responses for valid and invalid mailboxes. The domain does not function as catch-all. Supabase's mail infrastructure implements rate limiting on inbound SMTP connections.
For partners communicating with Supabase employees, proper sender authentication is important. Supabase's corporate email filters enforce SPF, DKIM, and DMARC validation. Authentication compliance ensures reliable inbox delivery to supabase.com addresses.
Upload a CSV or TXT list of Supabase.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 Supabase.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, supabase.com is the official corporate email domain for Supabase Inc.. It is used for internal business communications.
No, supabase.com is a corporate email domain belonging to Supabase Inc., used exclusively by employees and authorized personnel.
supabase.com uses enterprise-grade mail infrastructure. Check the MX records section for specific mail server details.
B2B marketing to supabase.com requires proper consent. Corporate domains may use catch-all configurations, so verify individual addresses before sending.
Corporate domains like supabase.com may use catch-all configurations that accept all addresses. Use BulkEmailChecker advanced verification to detect catch-all behavior and validate individual mailboxes.
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 supabase.com's mail servers, the same engine that has verified billions of addresses since 2012.
Other corporate email domains we have audited.