You can send a WhatsApp message without saving the contact’s number using a simple link. Open your web browser and type "wa.me/" followed by the full phone number, including the country code wa.me. Press enter, and it will open a chat window on WhatsApp with that number. From there, you can type your message and send it, without needing to save the number in your contacts. This method is perfect for quick, one-time messages or reaching out to someone temporarily. It’s a hassle-free way to communicate without cluttering your contact list. WhatsApp offers this feature to make messaging more convenient and efficient.