What http server to use on outlook express?

Outlook Express primarily uses the internet Message Access Protocol (IMAP) or Post Office Protocol (POP3) for retrieving emails, and Simple Mail Transfer Protocol (SMTP) for sending emails. You can use any standard HTTP server for web-based email access, but for traditional email clients like Outlook Express, set up your email provider's IMAP or POP3 server settings along with the corresponding SMTP server for sending messages. Popular email providers include Gmail, Yahoo, and Outlook.com, each offering specific server settings for configuration.