If you could message only 250 people tomorrow, who would you pick?
Most businesses never answer that question. They assume the whole list goes out at once. Then the daily limit shows up, and they send it to whoever sits first in the spreadsheet. That is usually the oldest, coldest contact.
This guide shows how to send bulk messages on WhatsApp to thousands of contacts in waves. Your best contacts go first, and your daily limit works for you.
Why you can’t send bulk WhatsApp messages to your whole list in one day
On the WhatsApp Business API, Meta caps how many different people you can message in 24 hours outside an open chat. New accounts start at 250 and can grow from there. This guide is about the limit you have today and how to use it well.
How many days to message 5,000, 10,000 or 20,000 contacts
Your List | At 250 a day | At 2,000 a day | At 10,000 a day |
5,000 contacts | 20 days | 3 days | 1 day |
10,000 contacts | 40 days | 5 days | 1 day |
20,000 contacts | 80 days | 10 days | 2 days |
How to split your WhatsApp contact list into Phases
Sorting your list is what decides who hears from you first. Use these four waves:
Wave 1: Customers who bought or replied in the last 30 to 60 days
Wave 2: Older customers
Wave 3: Leads who enquired but never bought
Wave 4: Old or imported contacts you know the least about
Why this order? Engaged people reply. Cold contacts ignore or block. And Meta looks at message quality before it lets your limit grow, so a strong start helps every later wave.
One rule for every wave: if you can’t say why someone is on your list, leave them out. Start with a consent-based broadcast list.
How to send WhatsApp bulk messages in batches with Emovur
Here is how a daily batch runs in Emovur’s WhatsApp broadcast tool.
Prepare the batch: Make one CSV per day, or one segment per wave.
Create a Broadcast: Pick your approved message template.
Add recipients: Upload the CSV or select the segment. Use Enter Numbers for a quick test.
Set up the message: Add text, media, dynamic variables or a dynamic URL. Map each variable to a column.
Handle duplicate: If a number appears twice, choose to send once only.
Set retries and schedule: Send at the same time each day.
Check results before the next batch: Look at delivery and replies. If people are blocking or ignoring you, fix the message before the next wave.
Keep some of your daily limit for order updates and reminders
Campaigns are not the only messages that use your limit. Order updates, payment reminders and appointment alerts sent outside an open chat can draw from the same daily number.
Do not plan to use all of it on a campaign. Keep a buffer, around 20%, so your important messages still go out.
Mistakes to avoid when sending WhatsApp bulk messages to thousands
Mistake | What goes wrong | Fix |
Sending in file order | Your oldest contacts go first | Sort by engagement before you batch |
Using the full limit on a campaign | Nothing left for order updates | Keep a buffer |
Messaging Wave 1 again every day | Same people get tired, blocks rise | Track who got which batch |
Same number twice in one CSV | One person gets two messages | Choose send once only |
Changing everything between batches | You can’t tell what worked | Change one thing at a time |
Your list is ready. Is your plan?
Having 10,000 contacts does not mean you can message 10,000 people tomorrow. The limit sets how many you can reach each day, and your plan decides who those people are. Send in waves, start with the contacts most likely to reply, keep a buffer for order updates, and check each wave before the next one goes out.
Emovur’s broadcast tool handles the work around it. You can upload a CSV, pick a segment or enter numbers, map your template variables, send once to repeated numbers, and schedule each wave for the same time every day.
Before you plan your first wave, see what running it will cost. Check Emovur’s pricing and see how it fits the size of your list.
Frequently Asked Questions?
Can I add more WhatsApp numbers to message more people each day?
No. Meta sets one limit for your whole business portfolio, and every number in it shares that pool. A second number does not add capacity.
Should I wait for my limit to go up before I start sending?
No. Your limit grows because of how you send, not because time passes. Start now with your best contacts and let your sending history build.
What if my offer expires before the last wave gets the message?
Match the offer to the waves you can reach in time. Send a time-bound offer to the first waves only, and give later waves a different message that still makes sense.
How do I know a wave worked before I send the next one?
Check delivery, replies and blocks the next morning. If replies are low or blocks are rising, pause and fix the message before you send more.
Should I include my old, cold contacts at all?
Only if they agreed to hear from you. If they did, put them in the last wave and test with a small batch first. If they did not, leave them out and collect fresh opt-ins instead.
