A ThunderBird add-on that enhances Thunderbird's ability to stay tidy with new techniques.
Some potential users may worry that this software is somehow trying to "harvest" email addresses, but I found that to be unfounded. ThunderPlunger's web component does not retain any information whatsoever. Moreover, the web component is composed in standard PHP, and the code can be scrutinized here, so anyone with doubts can perform an independent review for content and purpose.
Overall, while ThunderPlunger's email verification function may not be 100% accurate, it is still a useful tool for discerning if an email address is potentially valid or not. Additionally, the software's transparency regarding privacy concerns deserves commendation.
Version 1.2: N/A