Add or update a subscriber (upsert)

Add or update a subscriber (upsert)

Use Mailchimp: its Mailchimp Marketing Lists API lets you add or update a subscriber (upsert) in a single step (PUT /lists/{list_id}/members/{subscriber_hash}). capabilities.work can help you get signed up and connected.

• Can I add a contact if they are new but just update them if they already exist?
• What status is used for a contact who doesn't exist yet when I upsert them?

Say it to your AI assistant

• Upsert {email_address} on audience {list_id} as {subscriber_hash}, subscribing them as {status_if_new} if new.
• Create or update member {subscriber_hash} in list {list_id} with merge fields {merge_fields}.

For your developer

PUT /lists/{list_id}/members/{subscriber_hash} in Mailchimp Marketing Lists API. Full spec on APIs.io.