Email domain report
Brown University email format (brown.edu): verification & catch-all status
As of November 6, 2026, the most common brown.edu email format is [email protected], used by 80–84% of the at least 275 distinct brown.edu addresses mailfloss verified in the 90 days to November 6, 2026. brown.edu routes incoming mail through Google Workspace. In mailfloss's checks (latest November 5, 2026), brown.edu mostly rejected addresses that do not exist, so it is not a catch-all domain. 95% of mailfloss's brown.edu verifications in the 90 days to November 6, 2026 were accepted.
One address at a time, right on this page · counts rounded
- Most common format
first_last@- 80–84% of distinct addresses
- Catch-all
- No
- mostly rejects unknown mailboxes · checked November 5, 2026
- Accepted on verification
- 95%
- of verifications, 90 days to November 6, 2026
Verification results
How brown.edu responds to email verification
How brown.edu answered when mailfloss verified its addresses in the 90 days to November 6, 2026, most recently on November 5, 2026.
Where brown.edu stands among Google Workspace domains
Accepted on verificationshare of verifications accepted
95% brown.edu89% median of 6 Google Workspace domains
Leading listed formatshare of distinct addresses in the most common listed format
80–84% brown.edu80–89% median of 9 Google Workspace domains
Most common brown.edu email formats
| Format | What it means | Share | 95% range | Addresses |
|---|---|---|---|---|
[email protected] | First name, underscore, last name | 80–84% | 75–88% | 225+ |
| — | Other pattern | 5% | 3–11% | 15+ |
| — | One word, not a recognised name | 3–6% | 1–9% | 10+ |
| — | Contains digits | 1–4% | 0–7% | 5+ |
| — | Other formats, combined | 1–4% | — | 5+ |
Shares are of the 275+ distinct brown.edu addresses mailfloss verified in the 90 days to November 6, 2026. A range shows where a share can sit given the addresses behind it. Uncommon formats are combined, and the words in each format are placeholders, never real names.
SMTP responses from brown.edu
| Response | What it means | Share of listed responses |
|---|---|---|
250 | Mailbox accepted the addressDeliverable | 95% |
550 5.2.1 | Account disabled or inactiveUndeliverable | 3% |
550 5.1.1 | Mailbox does not existUndeliverable | 2% |
Only answers about the mailbox itself are listed.
Catch-all
No, mostly rejects unknown mailboxes
Last checked November 5, 2026
DNS, checked November 5, 2026
MX aspmx.l.google.com
SPF published · DMARC published
Free check
Verify an address at brown.edu
Type the part before the @. mailfloss asks the brown.edu mail server about that address and tells you in seconds what it answered: the same verification behind the results on this page.
Any other domain works too: type a full address. The result appears under the box; nothing you type is stored on this page.
Questions about brown.edu
Brown University email questions, answered from this data
Every answer comes from the numbers on this page, 90 days to November 6, 2026.
What email domain does Brown University use?
brown.edu. Its mail is routed through Google Workspace (aspmx.l.google.com), with SPF published and DMARC published, checked November 5, 2026.
What is the most common brown.edu email format?
[email protected]: 80–84% (95% range 75–88%) of the 275+ distinct brown.edu addresses mailfloss verified in the 90 days to November 6, 2026. Next: "other pattern" at 5% and "one word, not a recognised name" at 3–6%.
Is brown.edu a catch-all domain?
No. In mailfloss's checks (latest November 5, 2026), brown.edu mostly rejected addresses that do not exist, so it is not a catch-all domain. Because brown.edu mostly rejects mailboxes that do not exist, a permanent (5xx) "mailbox does not exist" or "account disabled" answer from it is reliable, and those addresses can come off your list; a 4xx answer is temporary, so retry it. An accepted answer is strong but not certain evidence that the mailbox exists. A full inbox or a busy mailbox is temporary, so recheck those later.
Do brown.edu addresses bounce?
Of mailfloss's brown.edu verifications in the 90 days to November 6, 2026, 95% were accepted, 5% were rejected and <1% got no clear answer.
How do I find or check an email address at brown.edu?
Build it from the person's name in the most common format, [email protected], then verify it before you send: mailfloss asks the brown.edu mail server about that exact address and reports what it answered. Because brown.edu is not a catch-all domain, a clear answer means what it says. Verify one now.
Does Brown University use Google Workspace or Microsoft 365?
Google Workspace, the mailbox provider on mailfloss's record. Its published MX record points there too, going by its public mail records as of November 5, 2026, with no security gateway in front of it.
Typo Fixer · company domains
A subscriber who typed bronw.edu is still a customer of Brown University.
Most verifiers mark bronw.edu invalid and delete the subscriber. mailfloss's Typo Fixer suggests brown.edu instead, checks whether that mailbox exists, and queues the fix for you to approve. Nothing changes behind your back.
On your signup form
Example: a subscriber types first_last@bronw.edu; Typo Fixer suggests first_last@brown.edu and queues it for your approval.
Other company domains on Google Workspace
All 9 Google Workspace domains| Domain | Most common format | Accepted on verification | Catch-all |
|---|---|---|---|
| compass.comCompass | [email protected]82–87% of addresses | 83% | catch-all: No |
| doordash.comDoorDash | [email protected]71–87% of addresses | — | catch-all: Yes |
| exprealty.comeXp Realty | [email protected]71–100% of addresses | 99% | catch-all: Yes |
| gfs.comGordon Food Service | [email protected]92–100% of addresses | 64–69% | catch-all: No |
| penfedrealty.comPenFed Realty | [email protected]85–89% of addresses | — | catch-all: No |
| revolut.comRevolut | [email protected]71–100% of addresses | 68–78% | catch-all: No |
One check is a start. Keep every address on your list deliverable.
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Every number here comes from verifications mailfloss ran for its customers in the 90 days to November 6, 2026. Pages show rounded aggregates only: no email addresses, names or single results. Read how mailfloss measures email formats and catch-all status.
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