This library allows you to quickly and easily use the Twilio SendGrid Web API v3 via Java.
Version 3.X.X of this library provides full support for all Twilio SendGrid Web API v3 endpoints, including the new v3 /mail/send.
This library represents the beginning of a new path for Twilio SendGrid. We want this library to be community driven and Twilio SendGrid led. We need your help to realize this goal. To help make sure we are building the right things in the right order, we ask that you create issues and pull requests or simply upvote or comment on existing issues or pull requests.
If you need help using SendGrid, please check the Twilio SendGrid Support Help Center.
- Installation
- Quick Start
- Usage
- Use Cases
- Announcements
- How to Contribute
- Troubleshooting
- About
- Support
- License
- Java 8 or 11
- The Twilio SendGrid service, starting at the free level to send up to 40,000 emails for the first 30 days, then send 100 emails/day free forever or check out our pricing.
Update the development environment with your SENDGRID_API_KEY, for example:
- Copy the sample environment file to a new file
cp .env_sample .env
- Edit the new
.envto add your API key - Source the
.envfile to set the variable in the current session
source .envChoose your installation method - Maven w/ Gradle (recommended), Maven or Jar file.
Add the following to your build.gradle file in the root of your project.
... dependencies { ... implementation 'com.sendgrid:sendgrid-java:4.10.3' } repositories { mavenCentral() } ...
mvn install
You can just drop the jar file in. It's a fat jar - it has all the dependencies built in.
The following is the minimum needed code to send an email with the /mail/send Helper (here is a full example):
import com.sendgrid.*; import java.io.IOException; public class Example { public static void main(String[] args) throws IOException { Email from = new Email("[email protected]"); String subject = "Sending with Twilio SendGrid is Fun"; Email to = new Email("[email protected]"); Content content = new Content("text/plain", "and easy to do anywhere, even with Java"); Mail mail = new Mail(from, subject, to, content); SendGrid sg = new SendGrid(System.getenv("SENDGRID_API_KEY")); Request request = new Request(); try { request.setMethod(Method.POST); request.setEndpoint("mail/send"); request.setBody(mail.build()); Response response = sg.api(request); System.out.println(response.getStatusCode()); System.out.println(response.getBody()); System.out.println(response.getHeaders()); } catch (IOException ex) { throw ex; } } }
The Mail constructor creates a personalization object for you. Here is an example of how to add to it.
The following is the minimum needed code to send an email without the /mail/send Helper (here is a full example):
import com.sendgrid.*; import java.io.IOException; public class Example { public static void main(String[] args) throws IOException { try { SendGrid sg = new SendGrid(System.getenv("SENDGRID_API_KEY")); Request request = new Request(); request.setMethod(Method.POST); request.setEndpoint("mail/send"); request.setBody("{\"personalizations\":[{\"to\":[{\"email\":\"[email protected]\"}],\"subject\":\"Sending with Twilio SendGrid is Fun\"}],\"from\":{\"email\":\"[email protected]\"},\"content\":[{\"type\":\"text/plain\",\"value\": \"and easy to do anywhere, even with Java\"}]}"); Response response = sg.api(request); System.out.println(response.getStatusCode()); System.out.println(response.getBody()); System.out.println(response.getHeaders()); } catch (IOException ex) { throw ex; } } }
import com.sendgrid.*; import java.io.IOException; public class Example { public static void main(String[] args) throws IOException { SendGrid sg = new SendGrid(System.getenv("SENDGRID_API_KEY")); try { Request request = new Request(); request.setMethod(Method.GET); request.setEndpoint("api_keys"); Response response = sg.api(request); System.out.println(response.getStatusCode()); System.out.println(response.getBody()); System.out.println(response.getHeaders()); } catch (IOException ex) { throw ex; } } }
- Twilio SendGrid Docs
- Library Usage Docs
- Example Code
- How-to: Migration from v2 to v3
- v3 Web API Mail Send Helper - build a request object payload for a v3 /mail/send API call.
Examples of common API use cases, such as how to send an email with a transactional template.
All updates to this library are documented in our CHANGELOG and releases.
We encourage contribution to our libraries (you might even score some nifty swag), please see our CONTRIBUTING guide for details.
Quick links:
Please see our troubleshooting guide for common library issues.
sendgrid-java is maintained and funded by Twilio SendGrid, Inc. The names and logos for sendgrid-java are trademarks of Twilio SendGrid, Inc.
If you need help installing or using the library, please check the Twilio SendGrid Support Help Center.