Previewing now marks emails as read correctly if the setting is enabled. It was just a simple race condiction. I simply relocated the mark-as-read call to be done once the email is fully loaded.
I also added some translations for spanish that were missing.
Fix issue #7.
Previewing now marks emails as read correctly if the setting is enabled.
Add missing translations for spanish
Awesome, thank you for your contribution to this project. I'm merging this now, will test in a bit and if all goes well I'll close the issue.