Is heroku.com a valid email domain?
heroku.com has working mail routing: 1 MX record pointing to Google (Gmail or Google Workspace), led by smtp.google.com.
It is not a free provider and is not on our disposable list, so addresses here usually belong to a company, school or other organisation.
SPF is published and ends with ~all. DMARC is set to reject.
Check an email address at heroku.com
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MX records (Google (Gmail or Google Workspace))
| Priority | Mail server | Resolves to |
|---|---|---|
| 1 | smtp.google.com | 64.233.167.26, 74.125.206.26 |
SPF
Record published
v=spf1 ip4:167.89.4.18 include:_spf.google.com include:mailgun.org include:aspmx.pardot.com exists:%{i}._spf.corp.salesforce.com ~allDMARC
Policy: reject
v=DMARC1;p=reject;fo=1:d:s;pct=100;rua=mailto:dmarc_agg@vali.email,mailto:0e5a5c34@inbox.ondmarc.com;ruf=mailto:0e5a5c34@inbox.ondmarc.com
Disposable?
No, not on our disposable list.
Free provider?
No, not a known free provider.
What this means for your email list
What this means for addresses at this domain
The domain accepts mail, but whether a given person's mailbox exists depends on that organisation. Company domains often have staff who left, role mailboxes like info@ and sales@, and sometimes catch-all rules that accept everything. Verify the individual address before you send.
Sender authentication
heroku.com has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as heroku.com must have SPF and DKIM set up correctly.
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Sign up to get a report summary →Frequently asked questions
- Is heroku.com a valid email domain?
- Yes. heroku.com publishes 1 MX record and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is heroku.com a disposable email domain?
- No. heroku.com is not on our disposable list. The list is updated regularly, and new throwaway domains appear all the time.
- What are the MX records for heroku.com?
- smtp.google.com (priority 1).
- Does heroku.com have SPF and DMARC?
- SPF: yes, ending ~all. DMARC: yes, policy reject.