Best Transactional Email Services for Microsoft 365

Compare the Top Transactional Email Services that integrate with Microsoft 365 as of July 2026

This a list of Transactional Email services that integrate with Microsoft 365. Use the filters on the left to add additional filters for products that have integrations with Microsoft 365. View the products that work with Microsoft 365 in the table below.

What are Transactional Email Services for Microsoft 365?

Transactional email services provide a way to send automated emails triggered by specific events like customer signups, purchases or password resets. They are used as a means of communication for companies and organizations to quickly send personalized messages to customers. Customers can receive emails such as receipts, invoices, shipping notifications, order cancellations and other updates through transactional email services. Transactional emails often offer an efficient way to let customers know about their account activities without manual intervention from the company. Compare and read user reviews of the best Transactional Email services for Microsoft 365 currently available using the table below. This list is updated regularly.

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    Retarus

    Retarus

    Retarus

    As a leader in information logistics, we drive communication for companies worldwide. With intelligent infrastructures, patented technology and excellent service. Because the faster and more securely your information flows, the better your business runs. Are you ready for Retarus? Successful business depends on agile and secure communication processes for their digitized and automated workflows. From newsletters and order confirmations to password resets and status notifications – fast delivery of transactional emails plays an essential role in the customer journey. Retarus helps you reach 99% of all mobile networks. That means almost everyone in the world. Quickly and reliably. Read our use cases to learn how you can make your customer dialogue more profitable with enterprise SMS services. Send your personalized content reliably, even to large distribution lists. By email, fax or SMS—it’s easy with a standardized and intuitive platform. Communicate directly from your web browser.
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