[AWS][SES] SES で S3 に受信したメールを Slack に通知 ref: http://qiita.com/wokamoto/items/d740a19ad7ee0d48b2c3

index.js

/*
Name: Email Forwarder
*/
exports.handler = function(event, context) {
    var slackConfig = {
        hostname:   "hooks.slack.com",
        path:       "/services/XXXXXXXXX/XXXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXX",
        channel:    "#channel",
        icon_emoji: ":ses:",
        color:      "good"
    };

    var aws = require('aws-sdk');
    var async = require('async');

    var bucket = event.Records[0].s3.bucket.name;
    var key = event.Records[0].s3.object.key;

    async.waterfall([
        function(nextProcess) {
            var s3 = new aws.S3({apiVersion: '2006-03-01'});
            s3.getObject({Bucket:bucket, Key:key}, nextProcess);
        },
        function(data, nextProcess) {
            var MailParser = require("mailparser").MailParser;
            var mailparser = new MailParser();

            // setup an event listener when the parsing finishes
            mailparser.on("end", function(result){
                console.log("Receive Mail: %j", result);
                nextProcess(null, result);
            });

            // send the email source to the parser
            mailparser.write(data.Body.toString());
            mailparser.end();
        },
        function(mail_object, nextProcess) {
            var https = require('https');
            var util = require('util');

            var options = {
                method:     'POST',
                hostname:   slackConfig.hostname,
                port:       443,
                path:       slackConfig.path
            };
            var postData = {
                "channel":      slackConfig.channel,
                "username":     mail_object.from[0].name + "(" + mail_object.from[0].address + ")",
                "text":         "Subject: " + mail_object.subject + "\n" +
                                "From: " + mail_object.from[0].name + "(" + mail_object.from[0].address + ")" + "\n" +
                                "To: " + mail_object.to[0].address,
                "icon_emoji":   slackConfig.icon_emoji
            };
            postData.attachments = [{
                "color":    slackConfig.color,
                "text":     mail_object.text
            }];

            var req = https.request(options, function(res) {
                nextProcess(null, res);
            });
            req.on('error', function(err) {
                console.log('problem with request: ' + err.message);
                nextProcess(err);
            });
            req.write(util.format("%j", postData));
            req.end();
        }],
        function(err, res) {
            if (err) {
                console.log('err: %j', err);
                context.fail(err);
            } else {
                console.log('result: %j', res);
                context.succeed('Success!');
            }
        }
    );
};