Hi there, this is my first post on the forum and I'm hoping anyone has any good ideas about how to solve this issue.

The problem is that some of my email templates don't automatically open on iOS 8.1 on iPhone 6 and 6+.

So far we found out that it did not have this issue for: @gmail.com, @hotmail.com, @outlook.com

But it does have the issue on for instance @live.nl

In the images attached, you can see how the content of the e-mail is not being opened by the client straight away, but that you first have to download the content. This is a problem that only occurs for some of our emails in iOS 8.1 on an iPhone 6 or iphone 6+, as far as we can tell by testing with the devices available to us in the office.

Does anyone have an idea what might cause the problem and how to fix it?