Reloop Java SDK

Official Java client for the Reloop API.

Before you send

1. API key — create one in your Reloop account
2. Verified domain — add and verify a sending domain; use it in the from address

Full API reference: reloop.sh/docs

Install

<dependency>
  <groupId>sh.reloop</groupId>
  <artifactId>reloop-java</artifactId>
  <version>2.0.0</version>
</dependency>

Quick start

import sh.reloop.ReloopClient;
import sh.reloop.exceptions.ReloopApiException;
import sh.reloop.exceptions.ReloopValidationException;
import sh.reloop.models.MailModels.SendMailParams;
import sh.reloop.models.MailModels.SendMailResponse;

public class Example {
    public static void main(String[] args) {
        ReloopClient client = new ReloopClient("rl_your_api_key_here");

        SendMailParams params = new SendMailParams();
        params.from = "Reloop <hello@your-verified-domain.com>";
        params.to = "user@example.com";
        params.subject = "Welcome to Reloop";
        params.html = "<p>Thanks for signing up.</p>";
        params.text = "Thanks for signing up.";

        try {
            SendMailResponse result = client.mail.send(params);
            System.out.println(result.messageId + " " + result.id);
        } catch (ReloopValidationException e) {
            System.err.println("invalid request (" + e.getField() + "): " + e.getMessage());
        } catch (ReloopApiException e) {
            System.err.println("API error " + e.getStatus() + ": " + e.getMessage());
        }
    }
}

Services

client.apiKey;    // create, list, get, update, delete, rotate, enable, disable
client.mail;      // send
client.domain;    // create, list, get, update, delete, verify
client.contacts;  // CRUD + .properties, .groups, .channels
client.webhook;   // CRUD, pause/enable/disable, trigger, deliveries + verify
client.inbox;     // .mailboxes, .messages, .threads

Errors

Kind	Type	When
Bad client args	ReloopValidationException	Invalid params — no HTTP call
HTTP / network	ReloopApiException	Non-2xx response or transport failure
Webhook HMAC	WebhookSignatureException	Local signature verification failed

Idiomatic Java exceptions — the Java equivalent of Node/Python Result objects and Go (T, error).

Webhook verification

import sh.reloop.services.WebhookVerify;

var event = WebhookVerify.constructEvent(payload, signature, secret, 300);
// or client.webhook.verify(params)

License

Licensed under the Apache License 2.0 with additional use restrictions from Reloop Labs (same as the Reloop project).