WB Bulk Sender WhatsBulk is a utility tool for Android that enables users to send bulk messages to customers without the limitations of broadcast messaging. Key features include the ability to attach files, send messages without saving contact numbers, and extract contact numbers from groups. The app offers a one-time purchase fee for lifetime validity with free upgrades. It does not require API approval, allows promotional messages, and supports personalized bulk messaging. Additionally, it ensures user privacy by not storing data on any server and provides an image editor for customization.

Sending messages with just a few clicks, importing contacts directly, sending named messages, grouping contacts into campaigns, and sending messages without approvals are some of the core functionalities. Users can also extract contact numbers from groups, customize images before sending, and receive active support for issue resolution within 12 hours.