How to send bulk WhatsApp messages without losing your number
Sending at volume on WhatsApp is straightforward once the account is set up. The work is almost entirely in what happens before the send and immediately after it.
Published
Before you can send
Get the number onto the Business API: business verification with Meta, display-name approval, and templates submitted for review. Submit templates while verification is still processing, because that is the step that usually delays launches.
- Verify the business with Meta
- Get the display name approved
- Build a genuinely opted-in list
- Submit templates in the correct category
Sending
Segment first. Meta bills per conversation, so a narrower, more relevant send is both cheaper and better received.
Send to a small slice first and watch delivery and reply rates before committing the whole list. New numbers also start on lower messaging tiers, so a large first send may queue.
Never import a list you did not collect. Purchased lists produce block and report rates that damage the account within hours.
The part that decides the outcome
Replies arrive within seconds and keep coming for hours. A campaign to ten thousand people can produce several hundred conversations, and those replies open a 24-hour window where you can talk freely.
If nobody answers them the campaign has cost money and produced irritation. Automating the reply is more important than automating the send.
Frequently asked questions
How long does setup take?
Verification usually takes a few days depending on your documents. Template approval is often within a day. Sending itself takes minutes once both clear.
Can I send to numbers from a purchased database?
No. It breaches WhatsApp's terms and is the most reliable way to lose the number permanently.
What is a good reply rate?
Far higher than email, which is why the reply side needs planning. Assume a meaningful percentage of any list will write back within the hour.
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