AirDroid - Access Android phone/tablet from computer remotely and securely. Manage SMS, files, photos and videos, WhatsApp, Line, WeChat and more on computer.
SendRecurring - SendRecurring allows you to setup, send, and maintain scheduled email reminders.
Pushbullet - Pushbullet - Your devices working better together
Recurrr - Send recurring emails
Unified Remote - Unified Remote is a software app available for iPhone, Android, and Windows Phone mobile operating systems. It's designed to turn your smartphone into a universal remote. Read more about Unified Remote.
FollowUpThen - The simplest way to schedule an email reminder