How to fax from Outlook and Microsoft 365
FaxScout independently compares online fax services, pricing, security, integrations and business fit to help you choose with confidence.
Outlook can be the front end for a fax workflow when your fax provider supports email-to-fax. Microsoft 365 users should also compare user administration and document handling rather than choosing only on the email feature.
FaxScout verdict
Fax.Plus
Best balanced choice for many small-business and team workflows.
From $6.99/mo; Business $27.99/mo; Enterprise $79.99/mo
- Clear 200 / 500 / 1,000+ page ladder
- Email-to-fax and mobile apps
- Business team/admin controls
- Enterprise API, SSO, BAA and data residency
Avoid if: Not the economical HIPAA choice for a small practice because Fax.Plus lists BAA/HIPAA on Enterprise only.
What matters for this decision
Side-by-side shortlist
| Provider | Starting price | Allowance | HIPAA / BAA | Number | Porting | Email fax | API | Score |
|---|---|---|---|---|---|---|---|---|
| Fax.PlusBest balanced choice for many small-business and team workflows | From $6.99/mo; Business $27.99/mo; Enterprise $79.99/mo | 200 (combined) | Enterprise only / Yes | Yes | Premium+ | Yes | Enterprise | 9.1/10 |
| eFaxEstablished brand with broad consumer, business and regulated-industry options | Plus $18.99/mo monthly; Pro $24.99/mo; Protect from $49.99/mo monthly | 340 (split) | Protect / eligible business offerings / Yes | Yes | Yes | Yes | Corporate | 8.5/10 |
Published plan facts verified August 19, 2026. “Verify” means the provider does not expose a sufficiently clear public answer for FaxScout to state it as fact.
Practical workflow
- Choose a compatible service.Confirm the exact workflow and plan before uploading sensitive documents.
- Prepare the document.PDF is the safest common format for predictable rendering.
- Verify the destination number.Avoid preventable misroutes before transmission.
- Send and retain status.Keep the delivery record when the document matters.
How FaxScout would make the decision
Start with non-negotiables: BAA eligibility, monthly volume, existing-number continuity, team size and API/integration requirements. Then compare total expected cost. Cosmetic features are tiebreakers, not reasons to ignore a major constraint.
We use primary provider documentation for plan facts and label every untested performance dimension. See who creates FaxScout research →
Frequently asked questions
Does Outlook have built-in online fax?
Outlook itself is an email client. A fax provider handles the fax transmission and can let Outlook act as the sending interface.
Sources & verification
Material plan facts were checked against primary provider documentation at the verification date shown above.