aws-lambda-ses-contact-form's Introduction

aws-lambda-ses-contact-form

AWS Lambda function for contact forms with Amazon Simple Email Service (SES)

Setup

SES

Add and verify your sender email address on SES.
Setting Up Easy DKIM for a Domain to avoid the "via amazon.com" alert in the mail client.

Lambda

Create a new IAM role with the JSON below:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "logs:CreateLogGroup",
        "logs:CreateLogStream",
        "logs:PutLogEvents"
      ],
      "Resource": "arn:aws:logs:*:*:*"
    }
    ,{
       "Effect": "Allow",
       "Action": ["ses:Send*"],
       "Resource":"*"
     }
  ]
}

Create a new Lambda function with the IAM role.
Update index.js.

API Gateway

Create a new API.
Add a new resource /send.
Add a POST method to it applying the Lambda function above.
Add a application/json request mapping template to the POST method:

{
    "form": $input.json('$')
}

Add Access-Control-Allow-Origin: "*" to the response header mapping of the POST method.
Deploy the API Gateway.

Web Client

Call the API Gateway endpoint from the web client like:

function submitContact(url, to, subject, body) {
  const jsonData = JSON.stringify({
    'to':      to,
    'subject': subject,
    'body':    body
  })

  $.ajax({
    type: "POST",
    url:   url,
    async: true,
    contentType: 'application/json',
    dataType: 'json',
    data: jsonData,
    error: function(data)　{ 
      console.log(data)
    },
    success: function(data)　{
      console.log(data)
    }
  })
}

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