WtsToolKit allows you to set a delay time between each message or after a specified number of messages have been sent.
You can set the time and the specified number of messages at the bottom of the sending dashboard.
It is advisable to increase the delay setting based on the size of your contact list. The current default delay settings are sufficient for almost 200 contacts, as the tool takes random delays from the configuration you provide.
We highly recommend that you do not send more than 600 messages per hour to avoid being banned by WhatsApp. For more details, please refer to Anti-Ban Tips – System Setting Page.