Custom Field Support in Zapier?
Saw this previous thread from last year about custom fields being supported in Zapier:
Has there been any progress on making this possible?
This discussion has been closed.
Alternatively, you can use Zapier's 'Webhooks' zap to do a POST to Sendy's 'subscribe' API. Doing so, you can pass in any of the supported parameters (eg. custom fields) into the API call.
Create a Zap, then choose the app you want to connect to Sendy. Then instead of connecting the app to Sendy, connect to the 'Webhook Zap' instead.
Choose 'POST' for the Webhook Zap.
Then setup the Webhook Zap (see screenshot below):