I'm one of those people happily using Windows Live Mail for years who now has to switch to the Mail app in Win 10. I have two email accounts, and a large number of off-line storage folders for email. I have encountered problems with sorting both of these, grateful for advice.

Firstly, one of my email accounts (a non-MS account), I am told that I must specify specific ports for outgoing and incoming email. the Win 8 app apparently allows you to specify these, but the Win 10 app doesn't (see this guidance: . How do I tell the app which ports to use ?

Secondly, I understand I must transfer all my off-line data back into Outlook.com so I'm doing this folder-by-folder. Each folder relates to a specific topic and can contain mail from either or both email accounts. But the new folders must be in specific accounts and if (say) I get an email in one account I can't put it into the topic folder in another account. I don't want duplicate topic folders in each account, I want one set into which I can put emails irrespective of which account received the email. How do I set this up please ?