@Stephan @Bob
I use Klammer to open my mail files.
https://itunes.apple.com/us/app/klammer/id386777877?mt=8
It is a paid app, so if you don't think .99¢ is worth it, you may wish to look elsewhere. It can also open various Windows email file types according to the app store. I however cannot speak to that as I have not used it for that purpose.
It has some lower reviews as of late, on the app store, but I personally have no issue opening mail files with it from Dropbox. Some of the reviews say it only supports open via url. Yes you will see that if working directly within Klammer. The trick is to start in Dropbox first.
To open them, locate the email in the Dropbox app.
Try to open it, it will fail.
Tap the sharing sheet icon.
Tap open in other app icon.
Tap copy to Klammer
Klammer opens with the email displayed.
If you wish to remove that email from Klammer, tap documents, top left corner, tap inbox, tap edit, select the message, tap delete selected. * I often remove them from Klammer as it has no security settings of it own and I don't want emails just sitting it its inbox with no protection.
I am in no way affiliated with the developer, just a user like yourself whom grew tired of not being able to open mail files on my iOS device.
Best of luck,
Tom
ps. It has a Mac counter part in the Mac App Store if you also need to open Windows mail files from there. I have never used the Mac version.
pps. There may be other's out there but Klammer has never let me down and it does what I need.
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