Buffer helps users manage multiple social media accounts at once as well as quickly schedule content from anywhere on the web, collaborate with team members, and analyze rich statistics on how posts perform.
Gmail is a free, advertising-supported email service offered as part of Google's G Suite, with 15GB of storage, color-coded inbox filters and unsend button.
Hootsuite is a social media marketing tool for businesses to manage, schedule & track the engagement of their social content across all social media profiles.