SendRecurring - SendRecurring allows you to setup, send, and maintain scheduled email reminders.
AirDroid - Access Android phone/tablet from computer remotely and securely. Manage SMS, files, photos and videos, WhatsApp, Line, WeChat and more on computer.
Recurrr - Send recurring emails
Droid Explorer - A tool to manage your rooted Android device with the simplicity of Windows Explorer.
Followup.cc - FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.
Wondershare MobileGo - Wondershare MobileGo is a dependable and convenient application that can help you to reinforcement or exchange information from your Android mobile phone to the PC and access particular applications to deal with your records effortlessly.