RadarPricesOrderE-mail address check
Check if an e-mail address can receive mail: we test the address format and whether its domain has working mail servers (MX), plus SPF and DMARC. Free, no sign-up. We never send a message to the address.
| Domain | stripe.com |
|---|---|
| Mail servers (MX) |
|
| SPF | v=spf1 ip4:198.2.180.60/32 ip4:13.111.2.227/32 include:spf1.stripe.com include:greenhouse-outbound-mail.stripe.com include:_spf.qualtrics.com ~all |
| DMARC policy | reject |
| Grade | A |
| Issues |
|
💡 Simple guide · no technical skills needed
When do I need this?
You are not sure an e-mail address is real before you write to it or accept it in a form.
How to do it
- Type the address.
- Press Check.
- See whether it looks valid and whether its domain can receive mail.
Good to know
- A whole list? Use the e-mail list cleaner.
Words explained
- domain
- Your website name, e.g. mybakery.com. It is also the part of an e-mail address after the @.
- MX
- The domain setting that says where your e-mail is delivered.
- SPF
- A domain setting that lists who may send e-mail in your name. Helps your mail avoid spam.
- DMARC
- A domain setting that stops other people sending fake e-mails in your name.
Stuck? Press Help in the bottom corner and write your question in any language. You get an answer in seconds, or a real person answers you.
Need this in bulk or inside your app?
The same data as an API: JSON, lists of hundreds of items, history and "only new" monitoring. Pay per use, free trial on the markets.
Example API request
curl -X POST https://radarbg.com/x402/email-dns-dmarc-spf-check \
-H "Content-Type: application/json" \
-d '{"domains": ["stripe.com"]}'
# answers 402 with the price; any x402 client pays per call in USDC on BaseQuestions
Does it check if the mailbox exists?
No. It checks the format and that the domain can receive mail. Checking a single mailbox would mean contacting the mail server, which we do not do.
Why would mail bounce?
If the domain has no MX records, or does not exist, every message to it bounces.
Can you clean my whole list?
Yes, see our e-mail list cleaning service, or use the API on thousands of domains.