Lambda Mailer

app.js

var aws = require('aws-sdk');
var ses = new aws.SES();

exports.mailHandler = (event, context, callback) => {
    console.log("subject" + event.subject);
     var params = {
        Destination: {
            ToAddresses: event.to
        },
        Message: {
            Body: {
                Text: { Data: event.body }
            },
            Subject: { Data: event.subject }
        },
        Source: event.sender
    };

     ses.sendEmail(params, function (err, data) {
        callback(null, {err: err, data: data});
        if (err) {
            console.log(err);
            context.fail(err);
        } else {
            
            console.log(data);
            context.succeed(event);
        }
    });
};

template.yaml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
  lambda function smtp mailer on static schedule
  
Globals:
  Function:
    Timeout: 3

Resources:
  SendMailFunction:
    Type: AWS::Serverless::Function
    Properties:
      Policies:
        - Version: '2012-10-17'
          Statement:
            - Effect: Allow
              Action:
                - 'ses:SendEmail'
                - 'ses:SendRawEmail'
              Resource: '*'
      CodeUri: .
      Handler: app.mailHandler
      Runtime: nodejs10.x
      Events:
        SendMail:
          Type: Schedule
          Properties:
            Schedule: cron(0 0 1 1 ? *)
            Name: annual-billing-reminder
            Description: Sends and email once per year
            Enabled: True
            Input: | 
              {
                "subject": "Annual AWS billing reminder",
                "to": [
                  "rich@org.local"
                ],
                "sender": "rich@org.local",
                "body": "This is a reminder to prepare for annual billing statement."
              }