With business account, it is easy to apply for many affiliate program and looks more professional in business, when we create WA email and want to set in outllok,I get some error and issue,wrong with we couldn't connect with outgoing server (smtp),I had tried may times, and then successful with this method, and share to someone need it.I had successfully solve it. follow this several steps to solve.1.Log in to your mailbox in Outlook,2.click file-account setting 3. Select your email-Change 4.Fill in word pf Inbox in the Root folder path box, and click next, confirm and complete. wait for a minutes, you will find there is copy mail is showing up in your send file on outlook.