Sending 10,000 messages on WhatsApp is a daunting task, but it is possible.
Unfortunately, there is no official way to send WhatsApp messages to up to 10,000 contacts. However, you can send to a maximum of 5000 people, which is only via a community. To do this, you will need to use third-party software, such as DelightChat, Sendwo, etc.
Using DelightChat, for example, you can easily send bulk messages to your contacts. All you need to do is create a group, add your contacts to the group, and then send the messages. You can also customize the messages to make them more personal.
Sendwo is another great option for sending bulk messages on WhatsApp. With Sendwo, you can create a list of contacts, compose a message, and then send it to all of them at once. You can also schedule messages to be sent at a later time.
Finally, you can also use WhatsApp Broadcast Lists to send messages to up to 256 contacts at once. This is a great option if you want to send messages to a smaller group of people.
In conclusion, while there is no official way to send WhatsApp messages to up to 10,000 contacts, you can use third-party software, such as DelightChat and Sendwo, to send bulk messages. You can also use WhatsApp Broadcast Lists to send messages to up to 256 contacts at once.