How to send schedule messages on Whatsapp
First of all download the Skedit Application from Play Store.
After downloading, open it on your phone.
Now you will have the page show Sign In in front of you, you have to click on Sign In With Facebook.
After signing in, the Add Services page will open, you have to select WhatsApp there and click on Done.
Select the contact or group on which you want to schedule the message on WhatsApp.
After that, the date has to be selected next to the schedule, on which date you want to send that message.
After selecting the date and time, write the message in the message box that you want to schedule, after that you will see the right sign above, and click on it.