Apple Mail pre-loads your tracking pixel before anyone actually opens your email — so a chunk of your "open rate" is fake. TrueOpen takes your campaign CSV (Substack, Mailchimp, Buttondown, Kit — any ESP) and shows you the real number next to the reported one. No signup needed to see how it works. Free tier covers 5 analyses/month.
Customer.ioAutomate Messaging Everywhere — Startups Get 12 Months Free
Promoted
Maker
📌
Hey everyone! I'm not a newsletter writer myself — I was researching pain points for a tool idea and kept running into this Apple MPP problem. Built TrueOpen to fix it.
Upload a CSV, get an Adjusted Engagement Score next to your raw open rate — like the screenshot above, where 81% reported opens turned out to be 37% real ones.
Would love feedback, especially from people who actually run newsletters — am I missing anything important?