- Add support for `complaint` to the SES bounce processor.
- Add support for `hard/soft` to Sendgrid bounce processor.
- Add new bounce actions `None` and `Unsubscribe`.
- Add per type (`soft/hard/complaint`) bounce rule configuration to
admin settings UI.
- Refactor Cypress bounce tests.
- Blocklist or unsubscribe subscribers based on a bounce threshold
- Add /bounces UI for viewing bounces and in the subscriber view
- Add settings UI for managing bounce settings
- Add support for scanning POP3 bounce mailboxes
- Add a generic webhook for posting custom bounces at /webhooks/bounce
- Add SES bounce webhook support at /webhooks/services/ses
- Add Sendgrid bounce webhook support at /webhooks/services/sendgrid
