Email outreach is one of the most frequent tasks carried out by business professionals. That might be for sending cold emails, follow-up reminders, or relationship building. Gmass and Mailshake have been popular among its users for carrying out these outreach activities in an efficient manner.
Both Gmass and Mailshake started in 2015. Gmass and Mailshake are two email campaign tools with different approaches. Gmass is more focussed on email productivity whereas Mailshake is focussed on sales productivity.