End-users & identifiers

Tie clicks and conversions to your own user IDs — privately.

1. 1
   Optionally register your end-users (POST /v1/end-users or via the End-users page) to tie clicks and conversions to your own user IDs.

   Useful if you run an app or a cashback product and need to know which of your users generated which sale.
2. 2
   Attach identifiers (email/phone) — we hash them immediately and store only the hash.

   Hashing is deterministic and salted, so the same identifier always matches without us ever holding the raw value.
3. 3
   Use the Identifiers page to look up which of your users an identifier resolves to.