[ecosystem platform] Add information pertaining to bounceType

[data-sync-user]

In the Email Bounces section within Admin Panel, there is a bounce type field. It would be helpful to add any details and/or definitions of what the different bounceTypes mean, what can/can't be done and/or should/shouldn't be done (e.g., see attachment - what does Permanent mean? Is there something I should tell the user?). This should be included within the Admin Panel docs on the Ecosystem Platform and there should be a link to the section in the Triage Owner Duties docs as well.

For reference, bounceType, bounceSubType, and descriptions can be found here: https://docs.aws.amazon.com/ses/latest/dg/notification-contents.html#bounce-types

Also note -

if a bounce type is suppressed, clearing it isn’t going to help and will hurt deliverability score if we keep trying to send it.

If a user’s email address is globally suppressed, we are not able to clear it from the list as Amazon SES owns this list. The email address should drop off of the list in 14 days.

There are also per-account suppression lists which we can clear, either through their panel or their support system - though we are not sure if we’ve ever done one of these.

Once their email address is cleared off the Amazon suppression list(s), the email address will still be blocked within our database. We will have wait the 14 days, then unblock in our database and have them retry.

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