> ## Documentation Index
> Fetch the complete documentation index at: https://resend.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Send emails with Java

> Learn how to send your first email using the Resend Java SDK.

## Prerequisites

Before you start, you'll need:

* A Resend [API key](/create-an-api-key)
* A [verified domain](/add-a-domain)

## 1. Install

<CodeGroup>
  ```bash Gradle theme={"theme":{"light":"github-light","dark":"vesper"}}
  implementation 'com.resend:resend-java:+'
  ```

  ```xml Maven theme={"theme":{"light":"github-light","dark":"vesper"}}
  <dependency>
      <groupId>com.resend</groupId>
      <artifactId>resend-java</artifactId>
      <version>LATEST</version>
  </dependency>
  ```
</CodeGroup>

## 2. Send emails using HTML

```java Main.java theme={"theme":{"light":"github-light","dark":"vesper"}}
import com.resend.*;

public class Main {
    public static void main(String[] args) {
        Resend resend = new Resend("re_xxxxxxxxx");

        CreateEmailOptions params = CreateEmailOptions.builder()
                .from("Acme <onboarding@resend.dev>")
                .to("delivered@resend.dev")
                .subject("it works!")
                .html("<strong>hello world</strong>")
                .build();

         try {
            CreateEmailResponse data = resend.emails().send(params);
            System.out.println(data.getId());
        } catch (ResendException e) {
            e.printStackTrace();
        }
    }
}
```

## 3. Try it yourself

<CardGroup cols={3}>
  <Card title="Basic Send" icon="arrow-up-right-from-square" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/BasicSend.java">
    Basic email sending
  </Card>

  <Card title="Attachments" icon="arrow-up-right-from-square" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/WithAttachments.java">
    Send emails with file attachments
  </Card>

  <Card title="Templates" icon="arrow-up-right-from-square" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/WithTemplate.java">
    Send emails using Resend hosted templates
  </Card>

  <Card title="Scheduling" icon="arrow-up-right-from-square" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/ScheduledSend.java">
    Schedule emails for future delivery
  </Card>

  <Card title="Audiences" icon="arrow-up-right-from-square" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/Audiences.java">
    Manage contacts and audiences
  </Card>

  <Card title="Domains" icon="arrow-up-right-from-square" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/Domains.java">
    Create and manage sending domains
  </Card>

  <Card title="Inbound Webhooks" icon="arrow-up-right-from-square" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/Inbound.java">
    Receive and process inbound emails
  </Card>

  <Card title="Double Opt-in" icon="arrow-up-right-from-square" href="https://github.com/resend/resend-examples/blob/main/java-resend-examples/src/main/java/com/resend/examples/DoubleOptinSubscribe.java">
    Double opt-in subscription flow
  </Card>

  <Card title="Javalin App" icon="arrow-up-right-from-square" href="https://github.com/resend/resend-examples/tree/main/java-resend-examples/javalin_app">
    Full Javalin web framework application
  </Card>

  <Card title="Spring Boot App" icon="arrow-up-right-from-square" href="https://github.com/resend/resend-examples/tree/main/java-resend-examples/spring_boot_app">
    Full Spring Boot application
  </Card>
</CardGroup>