Quickly open WhatsApp and start a conversation without saving the number.
Choose your country code and enter the phone number.
Write the message you want to send.
Click send, and WhatsApp will open with the message ready.
Yes and no. You won’t find this app on the App Store or Google Play Store. However, it’s a web-based application that you can easily add to your phone or computer by just click Install Now button or following these instructions: