How to mass email

[jamsiejay]

Hi i am trying to mass email but i cant do it.

I click users, send email to users

I wrote my email clicked submit but i got error.

no users matched your query.

I want to send to all users so how do i do this i have checked the boxes for registered users but no luck i think i need to add something in the username bow but i want to send to all how do i do this advice greatly appreciated.