Choose whichever platform you use for reading/sending your work emails. Related: Signing up with RiffleCM in 5 minutes or lessRelated ArticlesSigning up with RiffleCM in 5 minutes or lessMy company receives ITBs to an email address that’s different from my own—how do I sign up?Signing up with Google: a step-by-step guideSigning up with Outlook—what to do when Microsoft asks for admin accessUnderstanding Contacts & How They Power Your Workflow