Awesome
This library allows you to quickly and easily use the Twilio SendGrid Web API v3 via Go.
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.
Table of Contents
- Installation
- Quick Start
- Processing Inbound Email
- Usage
- Use Cases
- Announcements
- How to Contribute
- Troubleshooting
- About
- License
<a name="installation"></a>
Installation
Supported Versions
This library supports the following Go implementations:
- Go 1.14
- Go 1.15
- Go 1.16
- Go 1.17
- Go 1.18
- Go 1.19
Prerequisites
- 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.
Setup Environment Variables
Update the development environment with your SENDGRID_API_KEY, for example:
echo "export SENDGRID_API_KEY='YOUR_API_KEY'" > sendgrid.env
echo "sendgrid.env" >> .gitignore
source ./sendgrid.env
Install Package
go get github.com/sendgrid/sendgrid-go
Dependencies
Setup Environment Variables
Initial Setup
cp .env_sample .env
Environment Variable
Update the development environment with your SENDGRID_API_KEY, for example:
echo "export SENDGRID_API_KEY='YOUR_API_KEY'" > sendgrid.env
echo "sendgrid.env" >> .gitignore
source ./sendgrid.env
<a name="quick-start"></a>
Quick Start
Hello Email
The following is the minimum needed code to send an email with the /mail/send Helper (here is a full example):
With Mail Helper Class
package main
import (
"fmt"
"log"
"os"
"github.com/sendgrid/sendgrid-go"
"github.com/sendgrid/sendgrid-go/helpers/mail"
)
func main() {
from := mail.NewEmail("Example User", "test@example.com")
subject := "Sending with Twilio SendGrid is Fun"
to := mail.NewEmail("Example User", "test@example.com")
plainTextContent := "and easy to do anywhere, even with Go"
htmlContent := "<strong>and easy to do anywhere, even with Go</strong>"
message := mail.NewSingleEmail(from, subject, to, plainTextContent, htmlContent)
client := sendgrid.NewSendClient(os.Getenv("SENDGRID_API_KEY"))
response, err := client.Send(message)
if err != nil {
log.Println(err)
} else {
fmt.Println(response.StatusCode)
fmt.Println(response.Body)
fmt.Println(response.Headers)
}
}
The NewEmail
constructor creates a personalization object for you. Here is an example of how to add to it.
Without Mail Helper Class
The following is the minimum needed code to send an email without the /mail/send Helper (here is a full example):
package main
import (
"fmt"
"github.com/sendgrid/sendgrid-go"
"log"
"os"
)
func main() {
request := sendgrid.GetRequest(os.Getenv("SENDGRID_API_KEY"), "/v3/mail/send", "https://api.sendgrid.com")
request.Method = "POST"
request.Body = []byte(` {
"personalizations": [
{
"to": [
{
"email": "test@example.com"
}
],
"subject": "Sending with Twilio SendGrid is Fun"
}
],
"from": {
"email": "test@example.com"
},
"content": [
{
"type": "text/plain",
"value": "and easy to do anywhere, even with Go"
}
]
}`)
response, err := sendgrid.API(request)
if err != nil {
log.Println(err)
} else {
fmt.Println(response.StatusCode)
fmt.Println(response.Body)
fmt.Println(response.Headers)
}
}
General v3 Web API Usage
package main
import (
"fmt"
"github.com/sendgrid/sendgrid-go"
"log"
"os"
)
func main() {
request := sendgrid.GetRequest(os.Getenv("SENDGRID_API_KEY"), "/v3/api_keys", "https://api.sendgrid.com")
request.Method = "GET"
response, err := sendgrid.API(request)
if err != nil {
log.Println(err)
} else {
fmt.Println(response.StatusCode)
fmt.Println(response.Body)
fmt.Println(response.Headers)
}
}
<a name="inbound"></a>
Processing Inbound Email
Please see our helper for utilizing our Inbound Parse webhook.
<a name="usage"></a>
Usage
- Twilio SendGrid Docs
- Library Usage Docs
- Example Code
- How-to: Migration from v2 to v3
- v3 Web API Mail Send Helper
<a name="use-cases"></a>
Use Cases
Examples of common API use cases, such as how to send an email with a transactional template.
<a name="announcements"></a>
Announcements
All updates to this library are documented in our CHANGELOG and releases.
<a name="contribute"></a>
How to Contribute
We encourage contribution to our libraries (you might even score some nifty swag), please see our CONTRIBUTING guide for details.
Quick links:
<a name="troubleshooting"></a>
Troubleshooting
Please see our troubleshooting guide for common library issues.
<a name="about"></a>
About
sendgrid-go is maintained and funded by Twilio SendGrid, Inc. The names and logos for sendgrid-go are trademarks of Twilio SendGrid, Inc.
<a name="support"><a>
Support
If you need help using SendGrid, please check the Twilio SendGrid Support Help Center.