How to find the SendSay subscription request address?

Question

API

Please tell me how to find a request to subscribe to the SendSay service. The specialist asks for a request code or addresses....
I will describe the situation:
How it worked before, when there was a Smartresponder mailing service:
(one of the options that was by default)
1. A person sent a form from the autowebinar subscription page and this data “flyed” both to the Autowebinar service and to Smartresponder
2. he received two letters at the same time (the first is from the autowebinar and the second, after ≈3-5 minutes from the smartresponder) asking him to confirm the subscription
Now we have SendSаy, and you need to implement this scheme of work.
And for this you need a code or a request address so that people subscribe to the SendSay service mailing lists

Answer 1

and the specialist is not made with a finger, you don’t pay him at all