package main

import (
    "context"
    "fmt"
    sendpulse "github.com/dimuska139/sendpulse-sdk-go/v7"
    "net/http"
)

func main() {
    config := &sendpulse.Config{
        UserID: "",
        Secret: "",
    }
    client := sendpulse.NewClient(http.DefaultClient, config)

    emails := []*sendpulse.EmailToAdd {
        &sendpulse.EmailToAdd{
            Email:     "[email protected]",
            Variables: map[string]interface{}{"age": 21, "weight": 99},
        },
    }
    
    ctx := context.Background()
    if err := client.Emails.MailingLists.SingleOptIn(ctx, 1266208, emails); err != nil {
        fmt.Println(err)
    }
    fmt.Println(*emails[0])
}