See where your email actually lands, not just whether it was delivered
A server accepting your mail does not mean it reached the inbox. SpamCipher sends your campaign to a set of seed inboxes across the major providers and records inbox, spam, or missing placement, so you know where your message really goes.
Test inbox placement
Delivered is not the same as in the inbox
When a provider accepts your mail, it can still file it in spam, drop it in the Promotions tab, or quietly discard it. Seed testing shows you which one actually happens, per provider.
- Send to the seed list. Add our seed addresses to your audience and send your campaign exactly as your real subscribers receive it.
- We record where it lands. Each seed inbox is checked for inbox, spam, or missing placement, plus the tab it lands in at Gmail.
- Fix and retest. Adjust authentication, content, or reputation, run the test again, and watch the placement move.
- Inbox, spam, or missing: where the message actually arrives
- Per-provider placement: how Gmail, Outlook, and Yahoo treat you
- Gmail tab placement: whether you land in Primary or Promotions
- Authentication results: how SPF, DKIM, and DMARC checked out
- Directional read: seed inboxes are test mailboxes, not real recipients
From sent to seen
Send to the seed list, see where it lands, and fix what is holding you back.
Send to the seed list
Drop our seed addresses into your send so the test campaign travels the same path as your real subscribers.
See where it lands
We check each seed inbox and report inbox, spam, or missing placement for every provider in the set.
Fix and retest
Tune authentication, content, or sender reputation, then run the test again to confirm the placement improved.
Find out where you really land
Run your first placement test free, no credit card required.
Every provider filters differently
Gmail, Outlook, and Yahoo each weigh authentication, content, and reputation in their own way. A campaign that sails into the Gmail inbox can sit in the Outlook spam folder, and one provider can change its mind as your reputation shifts.
Per-provider placement shows you exactly who trusts you and who does not, so you can target the fix instead of guessing. Treat the results as directional, since seed accounts are test mailboxes rather than engaged recipients.
Want to run placement tests automatically? Use the API
Trigger a placement test from your own tools whenever it matters: before a big send, after an authentication change, or once your sender reputation has shifted.
The SpamCipher API kicks off a test and returns per-provider results you can read in your dashboard or pipe into your reporting.
Build placement into your sending routine so a quiet drop in the inbox never goes unnoticed.
Explore the APIHow to read your placement results
A high inbox rate is a good sign, but the spam and missing results are where the work is. Spam placement usually points at content or reputation, missing often points at authentication or a provider that dropped the message, and a Promotions tab placement at Gmail is its own conversation. Read each provider on its own.
Make placement testing a habit, not a one-off. Test before major sends and after any change to your authentication or sending domain, and remember the numbers are directional. Seed inboxes show you the trend, not a guaranteed result for every real subscriber.
