At first, select the profiles of people to whom you want to send emails by clicking on checkboxes/click on the Select-All checkbox to select all profiles displayed on a page (also, you can change the number of profiles displayed on a page - Choose the needed number from Individuals per page options). Choose the Email Individuals option from Bulk actions to send email to people in bulk. Please note that you can send emails only to people whose contact details you have previously revealed. In the opened window, you can choose type of emails to use (all emails, corporate emails or personal emails), set up text format, insert email variables etc.