eBirdMail is a console application and it only interacts with the user while it is being configured. Once configured and tested, it can run unattended as described in the documentation.

Create emails in minutes. eBirdMail can compose emails in a few clicks. You can automate email delivery for such items as quotes, invoices, order and product information right from your system.
Simply select the real time data from spreadsheets to merge with your email. No third-party, no data transfers, no hassle: you control freely your emails.

Configuration of eBirdMail starts automatically. A wizard interface will walk you through the configuration process. Once configured, eBirdMail can be setup to run automatically and unattended as a console application.

eBirdMail is designed to support multiple configurations and allow for composing email based on different data sources, email templates and delivery ways. The Free edition supports only spreadsheets and csv files as data sources.

The license of this software is Freeware, you can free download and free use this email tool software.