I have a WordPress (WooCommerce) e-commerce site, so I send transactional emails from my server (like user signup notifications, order receipts, etc.), so it's crucial that my emails arrive in my customer's inboxes.
Lately I've been pretty much obsessed with improving my email deliverability.
I've setup feedback loops (using this list: List of current Feedback Loops offered at ISPs) with most of the popular email providers, and I’m automatically handling the spam reports (unsubscribing the complainants).
I also used Winning Email - Email Deliverability Service, which was helpful for analyzing things in my email header, DNS records, or server config, and telling me how to fix the problems.
What other suggestions do you guys have for improving your email delivery rates?
