Send bulk, personalized messages on WhatsApp

Send personalized campaigns, schedule messages and follow up with your contacts from one place.

No credit card required
Sender Studio web app

Sender Studio in action

Appointment campaign · Clinic

127

Sent

31

Follow-ups

18

Replies

Campaign sent

127 messages sent

Waiting for reply

3 hours with no reply

Automatic follow-up sent

Follow-up sent automatically

Reply detected

AI ready to reply

Recent activity

  • Anareplied
  • Carlosreplied
  • Maríano reply
  • Pedroreplied

Conversation with Ana

Appointment campaign · Clinic

Hi Ana. I saw you're interested in scheduling an appointment at our clinic. Is that right?

9:00 AM

3 hours with no reply

Hi Ana, would you like me to send you the available times?

12:00 PM

Ana · 12:04 PM

I’m interested. What times do you have available?

AI suggestion

Of course, Ana. We have availability this week. Which day works best for you?

Send
Automation

Don't lose customers to missed follow-up

Anti-block

Adapts the pace for each campaign and contact so sending feels more natural and less repetitive.

  1. 1Per-contact pacing
  2. 2Adaptive intervals
  3. 3Less repetitive sending

Auto-pause on reply

When someone replies, their pending messages stop automatically.

  1. 1Reply detected
  2. 2Pause that contact
  3. 3Campaign continues

Automatic follow-up

If a contact stays quiet, send the next message after the delay you choose.

  1. 1No reply
  2. 2Wait 24 hours
  3. 3Send follow-up
Use cases

Useful for teams that follow up by WhatsApp

Sales

Follow up leads, quotes and old opportunities.

Clinics

Send appointment reminders and patient reactivation.

Real estate

Send listings, visit reminders and lead reactivation.

Schools

Move admissions, reminders and course updates.

Services

Keep customers informed without manual messages.

Plans

Free

$0forever

For testing a real WhatsApp follow-up campaign with a small list before you scale it.

Unlimited messages
Preview and control from the web app
Simple setup for basic campaigns
Standard speed
Most popular

Pro

US$19/ month

For sending campaigns, automating follow-up, and continuing replies with AI assistance from one place.

Send attachments and voice notes
Use multi-message sequences
Avoid over-messaging with auto-pause
Send at higher speed
Better for follow-up, sales and outreach
Automatic follow-up for contacts who do not reply
Campaign reply Inbox with AI-assisted suggestions
FAQ

Quick answers before you start

It helps you create, schedule and follow up on WhatsApp campaigns from one place.

Start sending WhatsApp campaigns today

Create your free account and start without a credit card.