Windows 10: My mail does not show the message. How do I get my messages back?

My mail does not show the message. How do I get my messages back?

:)

 

Does Edge copy the messages on my drive?

In the mail application of Windows 10 (Edge, I think it's called), do the messages shown get copied and stored on my drive?
- Because, If this is the case, if the messages I see have been downloaded and are taking precious disk space on my drive, I'll prefer to access my mail boxes through the webmail link in the server's site as I do now.
- But if Edge just lets me see the messages in the server, leaving them there and not clogging my drive with copies, then I will use Edge.
Thanks for any help

 

Message previews in mails from forums

Some forums have the option to enable message previews in mail notifications. Not only do you get a notification, but in that email you will see the text posted. This way you know if you should visit the topic or not.

 

how often does the mail app check for new messages?


right you are.
now, to get it to show desktop notifications.
I configured it so in mail options, but it doesnt work