I want to send mail on webform submission to selected users. Suppose I'm user and admin must select users from my account that if I submit webform, then how many user's can get that notifications of my webform submission via mail?
Use simplenews module
Simplenews publishes and sends newsletters to lists of subscribers. Both anonymous and authenticated users can opt-in to different mailing lists. HTML email can be sent by adding Mime Mail module.
Simplenews 7.x-1.0 has finally been released which includes a number of other important bugfixes, especially in the upgrade path.
Features Sending nodes as newsletters to subscribers Multiple newsletter categories with separate settings Per category and multi-signup Blocks and Pages Subscriber management including mass-subscription and export Optional E-mail confirmations for anonymous users Customizable newsletter templates Support for HTML (including text alternative) newsletter when used in combination with a supported mail system module Views and Rules integration Support for multi-language newsletters