Short answer: for a small SaaS sending fintech password-reset email, start with a standards-based sending setup and a local suppression gate; use a polling API only when the delay between a bounce or complaint and the next decision fits the SLO. A short token expiry does not compensate for sendi...
Source: [Dev.to](https://dev.to/nyxenl29/fintech-reset-mail-small-saas-custom-domain-deliverability-bounce-lists-and-polling-api-777)