If you are using on any third-party application like outlook or windows mail then you need to set up your roadrunner email over there. Over there you need to set up roadrunner email on IMAP or POP3 server, there are different server settings for IMAP and POP3 server but first, you need to set up and try roadrunner email in your browser to check if your password is correct or not. Once you confirm your password is working then you have to set up a roadrunner email on the third-party email client.
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