ZS Sender: personalized WhatsApp messages, sent your way.
A Chrome extension that helps you send personalized WhatsApp messages straight from WhatsApp Web: import a CSV, pick contacts or groups, set your own pace, and everything runs locally in your browser.
Everything you need, nothing you don't.
Flexible recipient lists
Build your list from numbers, saved contacts, groups, or ready made lists like Unread and Favourites.
Personalize with variables
Import a CSV and drop in variables like {name} or {city} so every message reads like it was written by hand.
Natural sending pace
Random delays and batching keep sends looking human, with a live report as each message goes out.
Create groups & invite members
Spin up a WhatsApp group and add members straight from your recipient list, in the same panel.
Export your own data
Download saved contacts, unsaved contacts, or group members to CSV whenever you need them.
Private by design
No servers, no analytics, no tracking. ZS Sender only talks to the WhatsApp Web tab that's already open.
Up and running in four steps.
Install the extension
Add ZS Sender from the Chrome Web Store and pin it to your toolbar.
Open WhatsApp Web
Log in as usual. ZS Sender connects to the tab you already have open.
Build your list
Import a CSV, or pick straight from contacts, groups, or lists.
Write & send
Add variables, set your pace, and hit start. Watch the live report as it runs.
See it in action.
Step by step walkthroughs, in English and Indonesian.
Try ZS Sender today.
Free to install, runs entirely in your browser, and works with the WhatsApp Web you already use.