Engineering blog
Practical writing for senior developers, engineering managers and technical founders — performance, data, SaaS architecture, applied AI, payments and mobile.
How DEV3 AI Helpdesk reads a mailbox with its own IMAP client, normalises Mailgun, SendGrid and Postmark webhooks, threads replies safely by ticket token and Message-ID, strips quoted history and stops auto-reply loops.
How DEV3 AI Abandoned Cart & Win-back moves each WooCommerce reminder to the shopper's best hour: browser timezone offsets, weighted hour scores, quiet hours that wrap midnight, and a rule that a send never moves earlier.
