Send no more than 5-10 messages per minute, i.e. send messages in portions rather than all at once; Connect a number registered in WhatsApp older than 90 days. If you have just registered the number, then wait 24 hours before connecting it to the service and for 24 hours, keep correspondence on whatsapp. Consider user response to message. It usually takes 3 clicks on the client’s "Spam" button to block the number; Having links in messages increases the likelihood of ban; WhatsApp’s physical limit on the number of messages is not present, but there is a recommendation not to exceed 5,000 messages per day. If the number is higher, it is better to scatter them on several different accounts. Or, if the number of incoming and outgoing messages is about the same, you can send a little more than 5000;Use a device with no previous bans; Receive incoming messages. The more incoming messages, the better. Incoming messages are not counted in a recommendation not to exceed 5000 messages. Do not write the same messages. Use the masks that are in amoCRM and Birik24 to substitute automatically the name or data from the fields. It is also recommended in construtkor to use random answers and occasional delays before response. If you connect a WhatsApp number to a CRM or any designer, be prepared to have your number BANNED for violating the license agreement! If banned Write to WhatsApp technical support with the question of why the ban and whether it can be unblocked. The first lock is likely to unlock the number. Responds TP quickly, within 2-3 hours.