Bulk check of Whatsapp and non-Whatsapp phone numbers ( numbers filter feature).Create and send Whatsapp messages with viral photos and videos.Grab all member of a Whatsapp group to contact them via WhatSender.Possibility to schedule the sending and set a delay between the messages to avoid to be banned (read also this tips).Ability to see the report of the campaign (from LOG section).Automatically create multiple variations of the message to send to all contacts and avoid spam or ban.Send Whatsapp messages to contacts even if they are not saved in your address book.Import contacts either manually or from file (CSV or TXT).