You can send SMS messages from your Gmail account using the Google Voice service. Here's how to do it:
1. Sign in to your Gmail account.
2. Click on the "Compose" button to create a new email.
3. In the "To" field, enter the recipient's phone number in the format of "+1 XXX-XXX-XXXX". The "+1" is the country code for the United States, so replace it with the appropriate country code if you're sending the message to a phone number in a different country.
4. After entering the phone number, you will notice that a "Text Message" option will appear next to the phone number.
5. Compose your message as you would normally compose an email.
6.
Click on the "Send" button.
7. Your SMS message will be sent to the recipient's phone number, and they will receive it as a text message.