Xitroo API

import java.net.URI;
import java.net.URLEncoder;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.nio.charset.StandardCharsets;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class WaitForMail {
    static final String API = "https://api.xitroo.com/v1";
    static final HttpClient HTTP = HttpClient.newHttpClient();

    static String get(String pathAndQuery) throws Exception {
        HttpRequest req = HttpRequest.newBuilder(URI.create(API + pathAndQuery))
            .header("X-Api-Key", System.getenv("XITROO_API_KEY")).build();
        return HTTP.send(req, HttpResponse.BodyHandlers.ofString()).body();
    }

    public static void main(String[] args) throws Exception {
        String address = URLEncoder.encode("my-test-42@xitroo.com", StandardCharsets.UTF_8);
        long since = System.currentTimeMillis() / 1000;
        // ... sign up with the address in your app ...
        Matcher id;
        do {
            Thread.sleep(2000);
            long until = System.currentTimeMillis() / 1000 + 60;
            String list = get("/mails?mailAddress=" + address + "&mailsPerPage=10&locale=en"
                + "&minTimestamp=" + since + "&maxTimestamp=" + until);
            id = Pattern.compile("\"_id\":\"([0-9a-f]{24})\"").matcher(list);
        } while (!id.find());

        // JSON with subject, bodyText, bodyHtml, ... (parse it with your JSON library)
        System.out.println(get("/mail?id=" + id.group(1) + "&locale=en"));
    }
}

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class SendMail {
    public static void main(String[] args) throws Exception {
        String json = """
            {"from": "my-test-42@xitroo.com", "recipient": "you@example.com",
             "subject": "Hello", "bodyText": "Sent with the Xitroo API"}""";
        HttpRequest req = HttpRequest.newBuilder(URI.create("https://api.xitroo.com/v1/mail/send/premium"))
            .header("Content-Type", "application/json")
            .header("X-Api-Key", System.getenv("XITROO_API_KEY"))
            .POST(HttpRequest.BodyPublishers.ofString(json))
            .build();
        HttpResponse<String> res = HttpClient.newHttpClient().send(req, HttpResponse.BodyHandlers.ofString());
        System.out.println(res.statusCode() + " " + res.body());
    }
}