How to Schedule a Message on WhatsApp for Android

1. WhatsApp Business

Once you have started up this application, you need to set it up similarly to how you set up your original WhatsApp account.
You need to fill out the requested profile sheet indicating your business name, company opening and closing hours and contact methods.
To schedule a message, click on the (…) icon in the upper right corner of the home screen of the app, click on Settings in the menu that pops up.
From here, click Task Settings > Welcome Message when that new screen appears.
Toggle the switch to ON under Send Welcome Message and press on the pencil icon to customize the text of this message that will get sent to your customers.
The message will be sent when they write to you for the first time, or after 14 days without activity.
Next, indicate the recipients of the message and confirm these changes by clicking the Save button located in the upper right.
Alternatively, tap the Away Message option to set a scheduled message to get sent automatically at a time you specify.
Move the toggle again to ON, under the Send Away Message heading. Use the pencil icon to designate the text of the message and then set a time and recipients of the message getting sent.
Confirm your selections and message by clicking the Save button in the upper right corner.