Email Marketing Platform (Node.js, SendGrid, Redis, PostgreSQL, React, S3) overview

An email marketing and campaign management platform combining React for a drag-and-drop template builder, SendGrid for high-volume email delivery with engagement tracking, and PostgreSQL for subscriber management, segmentation, and campaign analytics. Redis caches subscriber segments and rate-limits send operations to stay within provider quotas. S3 stores email template assets (images, attachments) and campaign archives. BullMQ orchestrates send jobs for campaigns targeting millions of recipients with staggered delivery. Designed for marketing teams that need white-labeled email infrastructure. The tradeoff is deliverability management — IP warming, SPF/DKIM setup, and bounce handling require ongoing attention.