Event Webhook Go Code Example

Parse Webhook

This example shows how to parse inbound emails with Go and the Twilio SendGrid Inbound Parse Webhook.

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Info

We recommend using our official Go SDK, our client library with full documentation, when integrating with SendGrid's Inbound Parse Webhook.

In this example, we want to parse all emails at address@email.sendgrid.biz and post the parsed email to http://sendgrid.biz/upload

Given this scenario, the following are the parameters you would set at the Parse API settings page:

Hostname: email.sendgrid.biz

URL: http://sendgrid.biz/upload

To test this scenario, we sent an email to example@example.com and created the following code:

1
2package main
3
4import (
5        "fmt"
6        "net/http"
7        "io/ioutil"
8        "log"
9        "github.com/sendgrid/sendgrid-go"
10
11)
12
13func Parse (w http.ResponseWriter, req *http.Request) {
14        //Get Email Values
15        to := req.FormValue("from")
16        subject := req.FormValue("subject")
17        body:= req.FormValue("text")
18
19        //Get Uploaded File
20        file, handler, err := req.FormFile("attachment1")
21        if err != nil {
22                fmt.Println(err)
23        }
24        data, err := ioutil.ReadAll(file)
25        if err != nil {
26                fmt.Println(err)
27        }
28        err = ioutil.WriteFile(handler.Filename, data, 0777)
29        if err != nil {
30                fmt.Println(err)
31        }
32}
33
34func main() {
35        http.HandleFunc("/upload", Parse)
36        err := http.ListenAndServe(":3000", nil)
37        if err != nil {
38                log.Fatal("ListenAndServe: ", err)
39        }
40}
41