I've been using Quick Sender for automating promotion on VKontakte for over six months now. The program is very functional: it has mass mailing, auto-friend requests, and a publication scheduler. The developers regularly release updates, and new features keep appearing. The license is perpetual, which is convenient—you pay once. On the downside, there are occasional issues with launching the program, requiring a restart. Tech support doesn't always respond quickly—I had to wait a few days for a reply. Overall, it's one of the best tools for working with VK if you're into SMM.
