EF Mailbox Manager (64-bit) can manage as many POP3 Accounts as you like. For periodical checking, polling time can be set individually for each account. You may check for new messages on a server and or delete messages on the server or download messages to a local computer for further use.
Downloaded E-Mails will be saved in ascii text files and stored in mail boxes. Should you use Outlook Express or any other E-Mail program which open attachments automatically, you are strongly advised to open the message first in a text editor such as Notepad or the integrated Viewer of EF Commander.
With EF Mailbox Manager you may remove annoying Spam E-Mails on the server without downloading them first.