CompleteSMS Unveils Outlook Add-In for Microsoft 365

New tool allows customers to manage SMS from their email inbox

Published on Feb. 24, 2026

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CompleteSMS, a leading SMS solutions provider, has announced a new add-in for Outlook on Microsoft 365 and Outlook.com. The add-in enables customers to easily send, receive, and reply to text messages directly from their email inbox, without having to switch between apps.

Why it matters

The new CompleteSMS add-in aims to streamline SMS communication for businesses by allowing them to manage text messages within the email platform they already use regularly. This integration can improve efficiency and productivity for companies that rely on SMS for various purposes like appointment reminders, security codes, and staff updates.

The details

The CompleteSMS for Outlook add-in is a web-based tool that integrates with the existing Outlook framework. Users can leverage their existing Outlook contacts and lists, schedule messages, create and store message templates and signatures, and more. The add-in is compatible with the Outlook mobile app as well. Installation requires no developer assistance, and the add-in is available in the Microsoft Marketplace for both new and existing CompleteSMS customers.

  • CompleteSMS announced the new Outlook add-in on February 24, 2026.
  • The add-in comes shortly after CompleteSMS launched a new Gmail add-on.

The players

CompleteSMS

A leading short message service (SMS) solutions provider that enables businesses to send various types of messages easily online, through email, or from a spreadsheet.

Tom Sheahan

CEO and co-founder of CompleteSMS.

Microsoft 365

A suite of productivity and collaboration tools, including the Outlook email client.

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What they’re saying

“Many of our customers like the idea of receiving and sending messages without leaving the place they are spending most of their time—their inbox.”

— Tom Sheahan, CEO and co-founder (PRNewswire)

What’s next

The CompleteSMS for Outlook add-in is available now in the Microsoft Marketplace for both new and existing CompleteSMS customers.

The takeaway

The new CompleteSMS Outlook add-in demonstrates the company's commitment to providing seamless SMS integration within the tools and platforms that businesses already use, helping to improve productivity and efficiency for their SMS communication needs.