How can I send email and notifications to the active (unlocked) users of the site? What modules do I need for that? Could you explain it clearly?
Already I'm using messaging, notifications and the Mass contact module. If I send mail through the Mass contact module, the blocked users also receive mails.
Add a category in Mass Contact
http://localhost/sitename/admin/config/system/mass_contact/add
and "Roles to receive e-mail" , just check "authenticated user" and save configuration.
And "authenticated user" are active user not the blocked user.
You could use hook_mail_alter to check the emails before they go out and filter the users on your conditions before they actually send to anyone.
You can use the Rules and VBO modules.
