After the service has been connected, you can specify the subject of the captured data by clicking on Settings next to the name of the connected service. You may use the following variables as a subject:
{{email}} — email
{{phone}} — phone
{{date}} — date of lead
{{formname}} — name of the form
{{formid}} — form ID
{{domain}} — domain
{{referrer}} — page URL
{{amount}} — amount
{{orderid}} — order ID
{{requestid}} — request ID
The word in the curly brackets will be substituted with the provided value.