In this instance you would need to check the server. However prefer to save important emails on Mobile as a PDF file (you should have a PDF Reader) For this method need to select Print, save as PDF,next tap PDF and select the desired Folder. I would suggest Documents or Downloads, now save and the emails shall be in My Files and in the Folder that was selected.
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
