The brand Roadrunner (roadrunner.com) was used by Time Warner Cable when it offered internet and email services. When Time Warner Cable merged (or was acquired) and the business transitioned to Spectrum, the email services (including @rr.com, @twc.com, @roadrunner.com, etc.) were moved under Spectrum’s umbrella. Hence, many users still hold “rr.com email” addresses, and they often n... https://rrcom.email/