github.com email format
The address template this company uses, inferred from what it publishes — with the addresses that prove it.
How github.com receives mail
github.com receives mail through Microsoft 365. These are public DNS records, read directly from the domain — not inferences, and not claims about any individual.
| Record | What the domain publishes |
|---|---|
| Mail provider | Microsoft 365, identified from the MX hostnames below |
| MX records | 0 github-com.mail.protection.outlook.com |
| SPF | Published · ~all — soft fail — anything not listed is suspicious but may still be accepted |
| DMARC | p=quarantine — treat failing mail as suspicious, usually the spam folder |
MX and authentication records checked 11 September 2026. Run the checks yourself with the MX record lookup and the SPF and DMARC checker.
Why this matters for an address at this domain: the MX records name the servers a verification probe talks to, and different mail platforms answer a probe differently — some confirm a mailbox, some defer first, some accept everything. SPF and DMARC describe the opposite direction, how this domain’s outbound mail is authenticated, and have no bearing on whether a mailbox here exists.
How an email format is worked out
A company that uses {first}.{last} uses it for almost everybody. That is what makes an unpublished address findable: one known address plus a name is often enough to derive another.
The pattern is inferred from addresses where the person's name is also known — jane.doe@github.com belonging to Jane Doe is one vote for {first}.{last}. Confidence comes from agreement and sample size, and a local part that matches several templates splits its vote, so one ambiguous sample cannot outweigh an unambiguous one.
A pattern is still a prior, not a guarantee. Executives and long-tenured staff often predate a format change, which is why any generated address is verified before it is returned — and why an address on a catch-all domain can never be fully confirmed.
Questions
- What is the email format at github.com?
- VerifyInbox infers it from the addresses github.com publishes on its own website. Most organisations use one template — {first}.{last} is the most common — and the tool above reports which one, along with the published addresses it was inferred from.
- How do I find someone's email address at github.com?
- Once you know the format, apply it to the person's name — then verify the result, because a pattern is a strong prior rather than a guarantee. The email finder does both in one step.
- Is this github.com email data accurate?
- It is inferred from addresses the company publishes about itself, and every one carries the page it came from. Pattern confidence reflects agreement and sample size: three addresses that agree is evidence, one is a hint. The DNS facts below are separate — those are read directly from the domain and carry the date they were read.
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