Mass E-Mail Inbox like Outlook (pop3)

Hey Guys,

i've a rising Problem. I need to manage (receive and send) emails from many email accounts for new emails. All the Accounts have enabled pop3.

Does anyone know of a program where I can easily insert many email accounts and actively manage them? Ideally via a web software where I can also use proxies.

Currently, I realize it with firebird, but the insert, as well as check, is tedious.

Thanks for your recommendation.

Do you want to use Outlook specifically or any other provider like Gmail can be useful for you?

I have different email accounts (gmail, web,yahoo, mail.com) etc. and want to check incoming emails on alle Accounts at a large scale.