Why did my email open rate drop in La Growth Machine?
The La Growth Machine help pages give 4 common reasons. The first to rule out: Opens are counted with a tracking pixel, and some inboxes block it, so some real opens can go uncounted.
What causes it?
Opens are counted with a tracking pixel, and some inboxes block it, so some real opens can go uncounted.
In the La Growth Machine help:
Some inboxes block it, which is why reaching 100% open rate is practically impossible.
How can I improve my email open rate?, read 2026-11-12.Without your own tracking domain, links are tracked through a shared domain, which La Growth Machine says can be marked as spam and lower your open rate.
In the La Growth Machine help:
Without Custom Domain Tracking, links are tracked through a shared domain → identified as spam → low open rate.
How can I improve my email open rate?, read 2026-11-12.When the same email goes to several people at one company, Outlook can spot it and send it to spam, so fewer of those emails can be opened.
In the La Growth Machine help:
Outlook identifies when identical emails are sent to multiple employees → spam.
How can I improve my email open rate?, read 2026-11-12.If your tracking domain and your sending domain do not match, mail providers can flag the emails as spam or phishing.
In the La Growth Machine help:
If your tracking domain doesn’t match your email domain, mail providers may flag your emails as spam or phishing.
Why, and how to set up a custom tracking domain?, read 2026-11-12.
How do I check it myself?
Check that open tracking is switched on for the campaign, since opens are not counted without it.
In the La Growth Machine help:
Make sure that email open tracking is enabled in your campaign:
How can I improve my email open rate?, read 2026-11-12.If you use your own tracking domain, check its DNS records for typos or extra spaces.
In the La Growth Machine help:
Double-check your CNAME and TXT entries for typos or extra spaces.
Why, and how to set up a custom tracking domain?, read 2026-11-12.
How does La Growth Machine work with Feder?
- Connect La Growth Machine to Feder and it joins your Interest apps.
- When you connect La Growth Machine, Feder checks the connection straight away and shows Connected only when that check passes. If a reading cannot be taken later, Feder shows it as not read, never as zero.
Some numbers are too quiet to judge daily, such as a form filled in a few times a week. Until there is enough of your own history to judge a change, Feder says it is still learning and scores nothing, rather than guessing.
See whether you can trust the numbers in La Growth Machine, one of your Interest apps. Feder only reads. It never changes anything in La Growth Machine.
What else goes wrong with these numbers?
- Why did La Growth Machine contact fewer leads this week?La Growth Machine
- Why did my LinkedIn acceptance rate drop in La Growth Machine?La Growth Machine
- Why did Google Analytics stop collecting data?Google Analytics
- Why aren't my key events showing in Google Analytics?Google Analytics
- Why does Google Analytics show (not set)?Google Analytics
See every question.
Where do these answers come from?
Every cause and check on this page comes from the La Growth Machine help pages, quoted above with the date we read them. Last reviewed 2026-11-12. We read them again by 2027-11-12. If one changes, this page changes or comes down.