List Verification
You can find the same tutorial in the Your First Upload quickstart guide.
List verification is the most common ApexVerify workflow. You upload a .txt file of emails or phone numbers, configure parameters, trigger parsing, and launch — the platform processes every record and returns detailed per-row results.
Cost optimization tips
Use caching to reduce costs. When use_account_cache and use_global_cache are enabled (both default to true), you get a 50% credit refund for any record that hits the cache. For lists with significant overlap across campaigns, this can cut your verification costs substantially.
Configure max_account_cache_backoff and max_global_cache_backoff (1–180 days) to control how far back the system looks. A lower backoff means fresher results; a higher backoff means more cache hits and lower cost.