Action, original source of data (file, ipfs, s3, ...).

optional field, only present if the message was a bounce TODO!: https://docs.aws.amazon.com/ses/latest/dg/notification-contents.html#bounce-types.

optional field, only present if the message was a complaint.

optional field, only present if the message was delivered (not necessary to use really).

Mail is a mail.

main object.

Receipt is a receipt of a message.

VerdictStatus (e.g.