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Buy Amazon SES Accountsfrom $750Buy Google Workspace Accountfrom $30Port 25, SPF, DKIM, DMARC, deliverability, and SMTP versus API sending.
Why cloud providers restrict outbound port 25 on new accounts, what ports 587 and 465 are for, how authenticated relays and Amazon SES replace direct delivery, and how providers handle lift requests.
How SPF, DKIM, and DMARC work, what alignment means, how to configure them for Amazon SES and Google Workspace, and a safe rollout order from p=none to p=reject.
How transactional and marketing email differ in triggers, consent, volume, and reputation, why they need separate sending identities, and how to run both on Amazon SES.
How sender reputation is built and lost, why new IPs and domains need warm-up, how to handle bounces and complaints automatically, and the list hygiene that keeps mail in the inbox.
SMTP interface or HTTPS API for application email: how each works on Amazon SES, a side by side comparison of effort, portability, features, and errors, and when to use which.