Power Automate can send free text messages using an email to text gateway. Each mobile phone company has its own gateway domain, and by sending an email to a 10-digit phone number at the gateway domain, the message can be received as a text. This method is best for internal company use-cases where the phone company is known. To send a text message using Power Automate, create a new flow with an instant trigger and add the "Outlook - Send An Email (V2)" action. Use the 10-digit phone number at the gateway domain as the sender and leave the subject line blank. To send messages to multiple numbers, create a SharePoint list of subscribers and use Power Automate to send emails to each subscriber.
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