> ## Documentation Index
> Fetch the complete documentation index at: https://help.messagesync.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction to WhatsApp Number Warm-Up

## Why Warm-Up Matters[​](#why-warm-up-matters "Direct link to Why Warm-Up Matters")

WhatsApp has sophisticated algorithms to detect and ban numbers that exhibit suspicious or spam-like behavior. When you connect a new WhatsApp number to any automation platform, you need to establish a reputation with WhatsApp's systems before sending bulk messages.

### What Happens Without Warm-Up[​](#what-happens-without-warm-up "Direct link to What Happens Without Warm-Up")

Without proper warm-up, your number can be:

* Temporarily banned (24-48 hours)
* Permanently banned
* Messages stuck in "pending" status
* Severely reduced delivery rates
* Marked as spam by recipients

<Warning>
  Delay connecting new WhatsApp accounts with any integrations or WhatsApp web for the first 7-14 days. Every new WhatsApp number needs warm-up.
</Warning>

### The Warm-Up Process[​](#the-warm-up-process "Direct link to The Warm-Up Process")

The warm-up process involves gradually increasing your sending volume over 7-14 days while maintaining natural, engaging conversations. This helps WhatsApp's algorithms recognize your number as legitimate business communication rather than spam.

<Check>
  Getting replies during warm-up is one of the most important factor in building your number's reputation.
</Check>

## Who Needs to Warm Up?[​](#who-needs-to-warm-up "Direct link to Who Needs to Warm Up?")

You should warm up:

* **Every new WhatsApp number** - Every new WhatsApp signup needs warmup
* **Business numbers** - Even established business numbers connecting to automation
* **Numbers that have been inactive** - If a number hasn't been used in 30+ days
* **After any ban** - If your number was previously banned, warm it up again

## Timeline Overview[​](#timeline-overview "Direct link to Timeline Overview")

* **Days 1-2:** Initial setup with 10-15 messages/day
* **Days 3-5:** Gradual increase to 20-30 messages/day
* **Days 6-10:** Building reputation with 50-100 messages/day
* **Days 11-14:** Scaling up to 200-300 messages/day
* **Day 15+:** Full operation with 500-1000+ messages/day

***

## Support[​](#support "Direct link to Support")

If you need help with the setup or onboarding:

* Email: [**support@messagesync.ai**](mailto:support@messagesync.ai)