Roadrunner is an email service provided by Time Warner Cable. Roadrunner email is provided to Time Warner Cable Internet users only. It is also known as Spectrum Webmail worldwide. It serves as an effective mode of email communication. You can roadrunner email login through webmail.spectrum.net. It also provides great services like unlimited storage space for attachments, spam protection, parental control, and an online book for all your addresses. To enjoy these services, you must create an account at Roadrunner email.