With the Fax.Plus Microsoft add-in and Email to fax feature, you can send and receive fax securely and quickly from Microsoft Office applications. There is no need to install a driver, use a fax modem or have access to a landline phone service.

Microsoft does not offer a native online fax service. Windows Fax and Scan works only with an analog phone line and is not compatible with internet fax. Office 365 and Microsoft 365 do not include any built-in fax capabilities. To send faxes from Microsoft applications such as Outlook or Word, you need a dedicated fax service like Fax.Plus, which integrates directly into your Microsoft environment.




Fax.Plus integrates smoothly with Microsoft Office 365, enabling you to fax Word documents without leaving the Office suite.
The Email to fax feature of Fax.Plus allows users to receive and send fax online via Outlook on laptop, desktop computers, and mobile devices.
Available on Business and Enterprise plans. Requires Owner or Admin access.
Access all faxing needs directly from your desktop with the Fax.Plus app for Windows.
Cross-platform online fax service with the focus on security, compliance, and ease of use
Strong encryption for stored documents and secure data transfer between our apps and servers, ensuring data is safe.
Choose a local, toll-free or international number to send and receive faxes online. You can port your existing number to Fax.Plus.
Compose an email from your inbox, address it to the recipient's fax number, and hit send. You'll receive a confirmation report.
Save time and money with online faxing. No need for a fax machine, phone line, or the costs of paper, ink, and maintenance.
Our products are designed with top-tier security and privacy at their core. SOC 2, HIPAA, ISO 27001, GDPR, and CCPA certified
Microsoft does not offer a native fax service in Microsoft 365, Outlook, or Windows. Windows Fax and Scan requires an analog phone line and does not support internet fax. Office 365 and Microsoft 365 do not include built-in fax capabilities. Fax.Plus fills this gap with a dedicated Microsoft fax service that integrates directly with Outlook, Word, and your broader Microsoft 365 environment, with no fax machine, modem, or phone line required.
Yes, through the Fax.Plus add-in for Microsoft Word. Once installed from Microsoft AppSource, the add-in lets you fax any Word document directly from within Word Online or the desktop app, compatible with Word 2013+, Word 2016 for Mac, and Word Online. You can add a cover page, schedule transmission, set automatic retries, and send to any fax number worldwide, all without leaving Microsoft Word.
Yes. With Fax.Plus, you can send faxes directly from Outlook by composing an email to a fax number formatted as [faxnumber]@fax.plus (e.g., +16692001010@fax.plus). Attach your document, click Send, and a delivery confirmation is sent back to your inbox. The same email to fax method works from any Microsoft email client. No separate app or hardware is needed.
Fax.Plus delivers incoming faxes directly to your Outlook inbox as email attachments. You can also receive fax notifications in Microsoft Teams, or access all faxes from the Fax.Plus web app, mobile app, or desktop application on Windows. To start receiving faxes, get a dedicated fax number on the pricing page.
Microsoft does not have a dedicated fax app. The best option for faxing from Microsoft products is Fax.Plus, available directly on Microsoft AppSource. The Fax.Plus add-in is compatible with Word 2013+, Word 2016 for Mac, and Word Online, and enables faxing directly from Microsoft Office applications without leaving the suite. A standalone Windows fax app is also available for users who prefer faxing outside the browser.
Yes. Beyond Microsoft, Fax.Plus connects directly with Slack, Google Workspace, and Zapier for workflow automation. If you need to embed fax capabilities into your own software, a full fax API is also available for developers.
Yes. Fax.Plus is fully HIPAA compliant, making it a trusted solution for healthcare organizations that need to send and receive protected health information by fax. Fax.Plus implements AES-256 encryption, TLS in transit, audit trails, role-based access controls, and signs a Business Associate Agreement (BAA) for Enterprise accounts. Learn more about our HIPAA compliant fax offering.
Yes. When using Fax.Plus within your Microsoft environment, all fax transmissions are HIPAA compliant. The same security stack applies regardless of whether you send from Outlook, Word, or the Fax.Plus desktop app: AES-256 encryption, TLS in transit, audit trails, role-based access controls, and a signed BAA for Enterprise accounts.
Yes. Fax.Plus lets you import multiple fax contacts in bulk from an Excel file, directly from your account dashboard. This is useful for Microsoft 365 users managing large contact lists across teams.
No. With Fax.Plus you can send and receive faxes from your computer, phone, or tablet, from anywhere. Physical locations like FedEx or libraries charge high per-page rates and have limited hours. Faxing online is faster, cheaper, and available 24/7 with no hardware required.
Create an account to save time and money by sending free faxes from a computer or mobile to anywhere in the world.