Stopping bad accounts is important, but it only solves part of the problem. It doesn’t address why these accounts keep appearing in the first place. If new accounts that can send emails are created easily across different regions, the abuse just continues under new names.
The best solution is to prevent these accounts from gaining access to production in the first place. Email services like SES should make approval processes more strict and include thorough reviews for each account. Until then, honest users will keep facing issues with their email delivery. Making it harder for bad actors to get approval will help protect everyone and improve overall email deliverability.