[Mailer] [Amazon] Add support for X-SES-LIST-MANAGEMENT-OPTIONS header

[sebschaefer]

Q	A
Branch?	7.1
Bug fix?	no
New feature?	yes
Deprecations?	no
License	MIT

Add Support for AWS SES List Management Feature
SES will provide the following features:

• adds Unsubscribe-Headers
• replaces {{amazonSESUnsubscribeUrl}} placeholder with an one-click unsubscribe link in mail body
• prevent sending mails to unsubscribed contacts (optional for a specific topic only)
• ref: https://docs.aws.amazon.com/ses/latest/dg/sending-email-subscription-management.html

Use:

• follow the AWS instructions to create a contact list
• optional: add a topic to the list
• RawMessage->addTextHeader('X-SES-LIST-MANAGEMENT-OPTIONS','contactListName=MyListName;topicName=MyNewsletter')

[carsonbot]

It looks like you unchecked the "Allow edits from maintainer" box. That is fine, but please note that if you have multiple commits, you'll need to squash your commits into one before this can be merged. Or, you can check the "Allow edits from maintainers" box and the maintainer can squash for you.

Cheers!

Carsonbot

[Nyholm]

Lovely. Thank you. This is indeed a good feature.

Could you add some tests too?

[sebschaefer]

I've added two tests. Thank you.

[fabpot]

Thank you @sebschaefer.