Contacts
Create or update contact
Create a new contact or update existing (upsert by email)
POST
Documentation Index
Fetch the complete documentation index at: https://docs.mailglyph.com/llms.txt
Use this file to discover all available pages before exploring further.
Authorizations
API Key authentication. Secret keys (sk_*) are required for all endpoints except /v1/track. Public keys (pk_*) only work with the /v1/track endpoint for client-side event tracking. Workspaces can have multiple active keys, and sender-domain operations enforce per-key domain scope when configured.
Body
application/json
Response
Contact updated
Unique contact identifier
Contact email address
Subscription status
Custom contact data fields
Available options:
ACTIVE, PENDING 
