Free Email Inbox Placement & Spam Tester
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 freePredefined Real-World Test Scenarios
Live verification vectorsInspects how plain transactional receipts land in Primary inbox across Gmail and Apple.
Evaluates single-purpose password resets and passkey confirmations.
Demonstrates content heuristics that trigger Gmail Promotions tab placement.
What 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
Ready for rock-solid transactional email?
Automated 2048-bit DKIM key rotation, domain-level SPF alignment, and suppression firewalls. Send 6,000 free emails every month with zero credit card required.
Questions
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