Record Email with AWS Lambda (they don't seem to include the body, in the end I got it by saving to an S3 bucket)

log_email_with_aws_lambda.js

'use strict';
// When selecting the fn, you have two ways to call it:
// "Event"           - asynchronous invocation
// "RequestResponse" - Logs the return value (maybe does more, but it cares about the return value, at the very least)
exports.handler = (event, context, callback) => {
  /* 
     event:
       { Records: [{eventSource: 'aws:ses', eventVersion: '1.0', ses: <EMAIL>}]}
       
     https://docs.aws.amazon.com/lambda/latest/dg/nodejs-prog-model-context.html
     context:
       { callbackWaitsForEmptyEventLoop: [Getter/Setter], 
         done:                           [Function],
         succeed:                        [Function],
         fail:                           [Function],
         logGroupName:                   '/aws/lambda/test',
         logStreamName:                  '2016/06/12/[$LATEST]36232f56df424ab5bcb67524024bbc2d',
         functionName:                   'test',
         memoryLimitInMB:                '128',
         functionVersion:                '$LATEST',
         getRemainingTimeInMillis:       [Function],
         invokeid:                       'b24fc991-30c6-11e6-8af8-efdeb5bde635',
         awsRequestId:                   'b24fc991-30c6-11e6-8af8-efdeb5bde635',
         invokedFunctionArn:             'arn:aws:lambda:us-west-2:737363147724:function:test'
       }

    <EMAIL>:
      { "eventVersion": "1.0",
        "eventSource": "aws:ses",
        "ses": {
          "mail": {
            "commonHeaders": {
              "from":       ["Jane Doe <janedoe@example.com>"],
              "to":         ["[email protected]"],
              "returnPath": "[email protected]",
              "messageId":  "<0123456789example.com>",
              "date":       "Wed, 7 Oct 2015 12:34:56 -0700",
              "subject":    "Test Subject"
            },
            "source":           "[email protected]",
            "timestamp":        "1970-01-01T00:00:00.000Z",
            "destination":      ["[email protected]"],
            "messageId":        "o3vrnil0e2ic28trm7dfhrc2v0clambda4nbp0g1",
            "headersTruncated": false,
            "headers": [
              { "name": "Return-Path",    "value": "<janedoe@example.com>" },
              { "name": "Received",       "value": "from mailer.example.com (mailer.example.com [203.0.113.1]) by inbound-smtp.us-west-2.amazonaws.com with SMTP id o3vrnil0e2ic28trm7dfhrc2v0cnbeccl4nbp0g1 for johndoe@example.com; Wed, 07 Oct 2015 12:34:56 +0000 (UTC)" },
              { "name": "DKIM-Signature", "value": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=example.com; s=example; h=mime-version:from:date:message-id:subject:to:content-type; bh=jX3F0bCAI7sIbkHyy3mLYO28ieDQz2R0P8HwQkklFj4=; b=sQwJ+LMe9RjkesGu+vqU56asvMhrLRRYrWCbVt6WJulueecwfEwRf9JVWgkBTKiL6m2hr70xDbPWDhtLdLO+jB3hzjVnXwK3pYIOHw3vxG6NtJ6o61XSUwjEsp9tdyxQjZf2HNYee873832l3K1EeSXKzxYk9Pwqcpi3dMC74ct9GukjIevf1H46hm1L2d9VYTL0LGZGHOAyMnHmEGB8ZExWbI+k6khpurTQQ4sp4PZPRlgHtnj3Zzv7nmpTo7dtPG5z5S9J+L+Ba7dixT0jn3HuhaJ9b+VThboo4YfsX9PMNhWWxGjVksSFOcGluPO7QutCPyoY4gbxtwkN9W69HA==" },
              { "name": "MIME-Version",   "value": "1.0" },
              { "name": "From",           "value": "Jane Doe <janedoe@example.com>" },
              { "name": "Date",           "value": "Wed, 7 Oct 2015 12:34:56 -0700" },
              { "name": "Message-ID",     "value": "<0123456789example.com>" },
              { "name": "Subject",        "value": "Test Subject" },
              { "name": "To",             "value": "johndoe@example.com" },
              { "name": "Content-Type",   "value": "text/plain; charset=UTF-8" }
            ]
          },
          "receipt": {
            "recipients":           ["johndoe@example.com"],
            "processingTimeMillis": 574,
            "timestamp":            "1970-01-01T00:00:00.000Z",
            "spamVerdict":          {"status": "PASS"},
            "dkimVerdict":          {"status": "PASS"},
            "action":               {"type": "Lambda", "invocationType": "Event", "functionArn": "arn:aws:lambda:us-west-2:012345678912:function:Example"},
            "spfVerdict":           {"status": "PASS"},
            "virusVerdict":         {"status": "PASS"}
          }
        }
      }
  */
  const records = event.Records
  console.log('Num Records:', records.length)  // 1 for my purposes, at least

  const notification = records[0].ses
  console.log("Mail to " + notification.mail.destination.join(", ") + ":", notification.mail)         // the above structure, doesn't seem to include body, so IDK how to follow the link :(

  callback(null)
};