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Get StartedWarming Up Numbers

Warming Up New Numbers

A brand-new WhatsApp number has no history and no trust. If it suddenly sends dozens or hundreds of messages, WhatsApp’s spam systems treat it as exactly what it looks like — a spam bot. Warming up is the practice of building that trust gradually so the number can handle real volume without being flagged.

The riskiest moment in a number’s life is its first week. Most avoidable bans happen because a fresh number was used for bulk outreach immediately. Be patient here and you protect the number for years.

Before you start

  • Use a real SIM/number you control and can keep active long-term.
  • Set up the WhatsApp profile properly: business name, photo, and description. A complete profile looks legitimate.
  • Have the number receive and reply to a few genuine conversations from people you know before any outreach.

A sensible 4-week ramp

  1. Week 1 — Conversations only

    Handle inbound chats and reply to people you know. Aim for mostly two-way conversations, not bulk sends. Keep total daily activity low (roughly 20–40 conversations). No broadcasts yet.

  2. Week 2 — Small, personalized sends

    Begin light outreach to opted-in contacts only. Personalize every message with {{name}}. Keep daily volume modest and watch for any blocks or no-replies.

  3. Week 3 — Gradual increase

    If block and report rates are near zero and people are replying, increase volume step by step. Use broadcasts for opted-in lists so pacing is enforced for you.

  4. Week 4 — Approach normal volume

    Continue ramping toward your target daily volume. Never jump — each increase should be incremental and justified by healthy engagement.

Signals to watch

Back off immediately if you see any of these:

  • A spike in blocks or reports.
  • Many messages going unanswered (low engagement looks like spam).
  • The number being logged out or repeatedly disconnected by WhatsApp.
  • Any in-app warning from WhatsApp.

Keep an eye on your analytics for outbound volume and reply rates as you ramp. Falling reply rates are an early warning to slow down.

Do and don’t

DoDon’t
Reply to inbound chats firstBlast a cold list on day one
Personalize with {{name}}Send identical text to everyone
Increase volume graduallyJump from 10 to 500 in a day
Message opted-in contactsBuy and message a list
Offer and honor opt-outsIgnore people who ask to stop
Use paced broadcastsScript raw bursts of sends

Use Loopwave’s pacing while you warm up

When you do start outreach, send through Loopwave’s broadcasts rather than ad-hoc bulk sends. The built-in random delays, daily cap, and pause-on-disconnect keep a young number inside safe limits automatically — which is exactly what a warming number needs.

Back to outreach best practices

The full playbook for safe messaging at scale.