GoodSender とは？
GoodSender is an email API that earns deliverability instead of fighting for it. Permission is enforced at the API: recipients confirm before you can send marketing email. Engagement is monitored automatically — unsubscribes and complaints are suppressed instantly. Transactional templates (OTP, Login, MFA, Order Completed, New Device) ship without consent. Pass markdown, HTML, or plain text in one HTTP call. 100,000 emails/month free, $1 per 100K beyond. Built by the SendGrid co-founder.
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