This app automates bulk email sending to multiple recipients using variable email subjects and bodies. It was initially developed for contacting authors of scientific papers but can be used for any other purposes (please use it wisely).
The application uses the SMTP protocol and allows configuring a wide range of parameters.
It also lets you preview emails before sending them.
The program is free for personal use. If you intend to use this software for professional/enterprise purposes, please contact me to request a professional license.