lambda-ses

A simple email forwarder for static websites.

Overview

The application is partially an experiment on writing the smallest application that can serve the function of delivering SES emails from a HTTP POST.

Current approach is to leaverage the zappa toolkit to automate the creation of the AWS services, API Gateway and Lambda.

To manage the HTTP POST workflow flask was chosen as a simple web microframework.

Development

Local development is simple, check out the code and run the flask container.

Install requirements

pip install -r requirements.txt

Run Flask

python ses_forwarder.py

This should launch the flask container listening on port 5000 that you can access to simulate the connection to

Test Curl the endpoint

curl -H "Content-Type: application/json" -X POST -d '{"subject":"this is the subject","body":"and this is the body"}' http://localhost:5000/contact

Configuration

Configuration for the lambda is externalised into a JSON file config.json. This file contains the configurable options that need to be set for the lambda function to work for you.

Example content

Create a config.json file in the root folder of this project and customise the following example:

{
  "from_address": "aws-lambda@example.com",
  "to_address": "support@example.com"
}

Deployment

Deployment is managed by Zappa.

Zappa will be installed as part of the pip install -r requirements.txt command but still requires minimal configuration for your environment.

Example Content

Create a zappa_settings.json file that contains the s3 bucket you want to deploy your application to before it is deployed into AWS Lambda.

{
    "dev": {
        "app_function": "ses_forwarder.send_email",
        "s3_bucket": "lambda.ses_forwarder"
    }
}

See the Zappa documentation for further details for advanced configuration of the zappa_settings.json file.