twilio.com
Live email deliverability and anti-spoofing audit. Every value below was read from public DNS at the moment this page was generated.
88/100 — Solid configuration with a few gaps worth closing. Accepts mail · Protected against spoofing · Hosted by Google Workspace
Findings
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mx redundancy
Only one mail exchanger is published, so there is no failover.
smtp.google.com
Fix: Add a secondary MX at a higher priority number.
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spf
SPF ends in ~all (softfail); unauthorised mail is marked rather than rejected.
v=spf1 include:twilio.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~allFix: Move to -all once you have confirmed all senders are listed.
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mta sts
No MTA-STS policy, so inbound mail can be downgraded to an unencrypted connection.
Fix: Publish _mta-sts.twilio.com and host a policy at https://mta-sts.twilio.com/.well-known/mta-sts.txt.
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mx
Mail is handled by Google Workspace.
0 smtp.google.com
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dmarc
DMARC is enforcing with p=reject.
v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email; ruf=mailto:dmarc@twilio.com
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dkim
DKIM keys found for 4 selectors.
k1._domainkey, k2._domainkey, s1._domainkey, s2._domainkey
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bimi
BIMI is published; supporting clients can show your logo.
v=BIMI1; l=https://amplify.valimail.com/bimi/twilio/hDLC4_4C3fd-twilio_inc_1386496589.svg; a=https://amplify.valimail.com/bimi/twilio/hDLC4_4C3fd-twilio_inc_1386496589.pem
Records
| MX | 0 smtp.google.com |
|---|---|
| SPF | v=spf1 include:twilio.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all |
| DMARC | v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email; ruf=mailto:dmarc@twilio.com |
| DKIM selectors | k1, k2, s1, s2 |
| MTA-STS | not published |
| TLS-RPT | not published |
| BIMI | published |
| DNSSEC | not validating |
Same data, as JSON, in one request. No SMTP probing, no stored recipient data, 250 free calls a month.
curl "https://mailgrade.dev/v1/domain?domain=twilio.com"
Also available: /v1/verify?email=… for individual addresses, and
/v1/verify/batch for lists.