How to find the address of the subscription request SendSay?

Hello! Please tell me how to find the subscription request of the service SendSay. Specialist asks for code or address request....
Describe the situation:
As it worked before, when there was a mailing list service Smartresponder:
(one of the options, which was the default)
1. People sent the form with the sign-up page on autoobile and the data "flying", as in service Autovainera and Smartresponder
2. he received simultaneously two letters (the first is from autovainera and second, after ≈3-5 minutes from smartrecorder) that he confirmed the subscription

Now we have SendSаy, and you have to implement this scheme of work.
And this requires code or address of the request that people sign up for mailing service SendSay
July 2nd 19 at 17:10
1 answer
July 2nd 19 at 17:12
and specialist not a finger to do, really, is that if he does not pay

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