Short answer: for marketplace password recovery, choose the delivery setup that can prove what happened to every message, then keep the suppression decision in your own system. Inbox placement matters, but an evidence trail is the decision axis. A custom sending domain with aligned DKIM and SPF...
Source: [Dev.to](https://dev.to/ethanbrooks1486/password-reset-email-deliverability-for-custom-domain-provider-and-bounce-evidence-limits-dm8)