Free deliverability tool
Inbox placement test
Authentication checks tell you whether your records are correct. They do not tell you whether Gmail put your message in the inbox. This sends one message to real seed accounts and reports placement per provider.
Worked example — Test message · seed run
Sample demonstration- PassGmail
InboxSPF pass · DKIM pass · DMARC aligned
- PassOutlook / Microsoft 365
Inbox - PassYahoo
Inbox - PassApple iCloud
Inbox - CheckProton
SpamCommonly caused by a new sending domain with no history.
Four of five providers delivered to the inbox. The outlier is consistent with a young sending domain.
SadaSend runs these checks continuously on your sending domains, and refuses to send until they pass — so mail Gmail would reject never leaves.
Start freeWhat this checks
- Placement per provider — inbox, promotions, spam, or missing
- Authentication results as each provider actually evaluated them
- The raw headers of the received message
- Content signals that commonly push mail to promotions
Questions
Other tools
- SPF checkerCheck an SPF record, resolve every include, and count DNS lookups against the limit of ten.
- DKIM validatorFetch a DKIM public key by selector, check the key length, and verify the record parses.
- DMARC checkerParse a DMARC record and explain what it actually does to mail that fails authentication.
- MX lookupResolve a domain's mail exchangers, check priorities, and flag common misconfigurations.
- Blocklist checkQuery major blocklists for an IP address or sending domain.