Receive and store emails

[frankolson]

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Describe the solution you'd like

• Utilize SES to receive emails
• emails should only be processed if there is a matching and unexpired inbox in the DynamoDB inboxes table.
• emails should be stored using AWS services
  • I am unsure on the most effective data store for this. S3 and DynamoDB both seem like viable options. More research should be done and reported here on the pros and cons of each.