WordPress plugins are pieces of code which extend WordPress functionality. Following plugins are created by myself and the team.
WP Change Default Email
This plugin allows you to change default WordPress from email address and name. You can download it from here
Better Email Validation
Provides better email validations to protect your blog from spam comments and bots creating accounts. It does deep validation to make sure the email account exists on the server. It requires fsockopen to be available and ability to connect to port 25. You can download it from here