HomeGuidesAPI Reference
ChangelogHelp CenterCommunityContact Us
These docs are for v1-2. Click to read the latest docs for v2024-02-15.

Checks if one or more emails, phone numbers, or push tokens are in a given list. No distinction is made between a person not being in a given list, and not being present in Klaviyo at all. Can check up to a maximum of 100 emails at a time.