Free tool
WhatsApp number warm-up checklist
A roadmap to print or save as PDF and tick by hand. It lays out what to do before using a new number to sell: prepare the profile, talk to real people, grow slowly and know when to stop.
Why warm up
WhatsApp reacts to behavior patterns. A brand-new number with no history that sends many messages to people who never spoke to it looks like spam. Warming up means building a natural usage history before the first send in volume.
WhatsApp has no official warm-up policy: what follows is market practice, not a platform rule, and nothing here guarantees a number will not be restricted.
1. Preparation
- SIM with an active plan, in the name of whoever will run it, receiving SMS.
- Complete profile: photo, business name and about text.
- Number connected in a stable way, without switching devices all the time.
- Five or more real contacts who agreed to talk to this number.
2. Real conversations
- Exchange back-and-forth messages with people who reply.
- Receive messages, not only send.
- Vary the format: text, audio, image.
- Avoid links, bulk media and identical messages to several contacts.
- Log what you did each day in the table below.
3. Gradual growth
- Raise the volume slowly, only if the previous day went well.
- Reply fast to whoever writes.
- Join real groups without posting ads.
- Keep send times within what a human would do.
4. Before the first broadcast
- List of people who agreed to receive (consent on record).
- Personalized message, not identical text for everyone.
- A clear way to leave the list (for example, reply STOP).
- Pauses between sends, starting with a small part of the list.
- A plan to stop if blocks, reports or disconnections go up.
Daily log
| Day | Sent | Received | Notes |
|---|---|---|---|
| Day ____ | |||
| Day ____ | |||
| Day ____ | |||
| Day ____ | |||
| Day ____ | |||
| Day ____ | |||
| Day ____ | |||
| Day ____ | |||
| Day ____ | |||
| Day ____ |
Warning signs: stop and reassess
- Contacts blocking or reporting the number.
- Messages that stop being delivered.
- Repeated disconnections.
- App notices about the number.
This checklist is a good-practice guide. WhatsApp can restrict numbers that send unwanted messages, and warming up lowers risk signals but does not remove the possibility.
Full warm-up guideAnti-banBulk sendingNumber validator
Frequently asked questions
How long does it take to warm up a number?
There is no official timeline. It depends on how natural the number's use is and on how contacts respond. That is why the checklist uses a daily log instead of a fixed number of days.
Does warming up guarantee the number will not be blocked?
No. Warming up lowers spam-like signals, but WhatsApp decides on its own, and consent and relevant messages weigh more than warm-up.
Does ZapZap warm the number up for me?
ZapZap offers community warm-up, where numbers exchange messages with each other. See the full guide on the warm-up page.
Warm up with the routine ready
ZapZap has community warm-up and anti-ban features. R$ 15 per active number per month. When you create your account and verify your phone, you get a welcome credit with no deposit needed (one per phone, subject to the current campaign).