I send out a newsletter for a community sports club - using Mailerlite. It gets to all recipients immediately… unless they’re iCloud users (which is me and the club coach). We get ours eventually (typically four days). Why? And what can Apple do about it? (And please don’t give us platitudes and links to irrelevant info… I’ve read similar strings and the advice demonstrates that the user complaint hasn’t been read properly).
Hey there Jon-in-Chi,
Thanks for using Apple Support Communities!
Based on what you're experiencing, these steps can help.
"Things to check first
3.Make sure you that haven't exceeded your iCloud storage limit. If you exceed your iCloud storage limit, learn how to make more space available in iCloud.
4.Make sure that you're using the latest version of software on your device."
This information can be found in If iCloud Mail isn't working. You'd want to work these steps first then move through the rest of the guide.
You've also mentioned using a third-party service to send the emails. We'd also suggest checking their site to see if there is a setting they can suggest since you've narrowed this down to iCloud mail: Mailerlite. The way to narrow this down would be sending the email outside the service to see if it arrives quickly. By doing this it will resolve whether it's the service itself or using iCloud Mail.
Kind regards.
Mail delivery delayed four days - why?
