Link copied to clipboard # InterFAX vs eFax Online Fax Service Comparison - What are their main differences? Share [ Export ](/compare/interfax/efax-online-fax-service/export.csv) Upland InterFAXeFax Online Fax Service[+ Add Product](#) Pricing **InterFAX** Free Trial **$9.95** Per Month · Fax + 200 **eFax Online Fax Service** Free Trial **$4.99** 1 Users Per Month · Personal **Pricing Insights** from reviews Time to Implement **InterFAX** 1 month Based on 29 responses **eFax Online Fax Service** 1 month Based on 45 responses Return on Investment **InterFAX** 5 months5 months sooner Based on 29 responses **eFax Online Fax Service** 10 months Based on 43 responses Perceived Cost **InterFAX** $$$$$ **eFax Online Fax Service** $$$$$ Average Discount **InterFAX** 8%1% more **eFax Online Fax Service** 7% **Pros & Cons** from reviews **InterFAX** [ Ease of Use (35) ](https://www.g2.com/products/interfax/reviews?filters%5Bsentiment_snippet%5D=1137567&qs=pros-and-cons#reviews)[ Faxing Services (33) ](https://www.g2.com/products/interfax/reviews?filters%5Bsentiment_snippet%5D=1137594&qs=pros-and-cons#reviews)[ Fax Issues (10) ](https://www.g2.com/products/interfax/reviews?filters%5Bsentiment_snippet%5D=1138350&qs=pros-and-cons#reviews)[ Limitations (2) ](https://www.g2.com/products/interfax/reviews?filters%5Bsentiment_snippet%5D=1137184&qs=pros-and-cons#reviews) **eFax Online Fax Service** [ Ease of Use (53) ](https://www.g2.com/products/efax-online-fax-service/reviews?filters%5Bsentiment_snippet%5D=1929630&qs=pros-and-cons#reviews)[ Faxing Services (43) ](https://www.g2.com/products/efax-online-fax-service/reviews?filters%5Bsentiment_snippet%5D=1929698&qs=pros-and-cons#reviews)[ Fax Issues (37) ](https://www.g2.com/products/efax-online-fax-service/reviews?filters%5Bsentiment_snippet%5D=1929717&qs=pros-and-cons#reviews)[ Slow Performance (5) ](https://www.g2.com/products/efax-online-fax-service/reviews?filters%5Bsentiment_snippet%5D=1928871&qs=pros-and-cons#reviews) Integrations **InterFAX** [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_1d691480aa3fba0192c2518d27b928f0/epic.jpeg "Product Avatar Image") Epic ](https://www.g2.com/products/epic/reviews)[ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_2cf4544d987ff36354b70378964111dd/ghl.jpg "Product Avatar Image") GHL ](https://www.g2.com/products/ghl/reviews)[ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_69054bc7d40597b06fc3905720ccc914/microsoft-outlook.png "Product Avatar Image") Outlook ](https://www.g2.com/products/microsoft-outlook/reviews)[ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_0da799ffb5961100815502aef44c6523/oncoemr.jpg "Product Avatar Image") OncoEMR ](https://www.g2.com/products/oncoemr/reviews)[ View all ](https://www.g2.com/products/interfax/integrations) **eFax Online Fax Service** [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_47fcc2069b1fb943548bd60c79684b6e/healthcloud.jpg "Product Avatar Image") HealthCloud ](https://www.g2.com/products/healthcloud/reviews)[ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_c65522c8f7bacfdc0684fc8d26bba00d/mozilla-firefox.png "Product Avatar Image") Firefox ](https://www.g2.com/products/mozilla-firefox/reviews)[ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_c7667c650c352acba4bfca38ee89457b/agentforce-sales-formerly-salesforce-sales-cloud.png "Product Avatar Image") Salesforce Sales Cloud ](https://www.g2.com/products/agentforce-sales-formerly-salesforce-sales-cloud/reviews)[ View all ](https://www.g2.com/products/efax-online-fax-service/integrations) Screenshots **InterFAX** ![InterFAX screenshot](https://images.g2crowd.com/cdn-cgi/image/width=600,height=600,fit=scale-down,format=auto,onerror=redirect,/https://images.g2crowd.com/uploads/attachment/file/145534/MicrosoftTeams-image-_74_.png) **eFax Online Fax Service** ![eFax Online Fax Service screenshot](https://images.g2crowd.com/cdn-cgi/image/width=600,height=600,fit=scale-down,format=auto,onerror=redirect,/https://images.g2crowd.com/uploads/attachment/file/1281555/Andriod-Screen-1.png) **Ratings** from reviews Meets Requirements **InterFAX** 9.3 9.3150 **eFax Online Fax Service** 9.2 9.2185 Ease of Use **InterFAX** 9.3 9.3154 **eFax Online Fax Service** 8.8 8.8194 Ease of Setup **InterFAX** 9.3 9.3127 **eFax Online Fax Service** 9.1 9.1150 Ease of Admin **InterFAX** 9.2 9.264 **eFax Online Fax Service** 8.8 8.879 Quality of Support **InterFAX** 9.2 9.2137 **eFax Online Fax Service** 8.4 8.4148 Has the product been a good partner in doing business? **InterFAX** 9.2 9.260 **eFax Online Fax Service** 8.7 8.778 Product Direction (% positive) **InterFAX** 8.8 8.8141 **eFax Online Fax Service** 7.9 7.9188 **Features** ratings from reviews Online Fax 8.5 144 7.9 166 HIPAA Compliant Messaging Not enough data 8.9 36 User Insights **Reviewers' Company Size** Small-Business(50 or fewer emp.) 53.3% Mid-Market(51-1000 emp.) 34.5% Enterprise(\> 1000 emp.) 12.1% Small-Business(50 or fewer emp.) 53.3% Mid-Market(51-1000 emp.) 34.5% Enterprise(\> 1000 emp.) 12.1% Small-Business(50 or fewer emp.) 80.4% Mid-Market(51-1000 emp.) 18.3% Enterprise(\> 1000 emp.) 1.3% Small-Business(50 or fewer emp.) 80.4% Mid-Market(51-1000 emp.) 18.3% Enterprise(\> 1000 emp.) 1.3% **Reviewers' Industry** [![InterFAX](https://images.g2crowd.com/uploads/product/hd_favicon/86dd55276e3da321c4e859f6b15f5e49/upland-interfax.svg "InterFAX")](https://www.g2.com/products/interfax/reviews) InterFAX Hospital & Health Care 23.1% Medical Practice 10.3% Health, Wellness and Fitness 8.3% Accounting 5.8% Information Technology and Services 5.1% Other 47.4% [![eFax Online Fax Service](https://images.g2crowd.com/uploads/product/hd_favicon/2ef40491a74bd436698af529b0857f95/efax-online-fax-service.svg "eFax Online Fax Service")](https://www.g2.com/products/efax-online-fax-service/reviews) eFax Online Fax Service Hospital & Health Care 13.7% Health, Wellness and Fitness 9.1% Law Practice 7.1% Accounting 7.1% Insurance 6.1% Other 56.9% Alternatives **InterFAX Alternatives** ![Amplify Ventures](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_28ad0ea059a00eacf4b949663a5f5360/amplify-ventures.png "Amplify Ventures") [ iFax ](/products/amplify-ventures/reviews) ![RingEX](https://images.g2crowd.com/uploads/product/hd_favicon/7fda7f2577052a09d5896be010850215/ringex.svg "RingEX") [ RingEX ](/products/ringex/reviews) ![GoTo Connect](https://images.g2crowd.com/uploads/product/hd_favicon/00b3f9d992d71d88395014c459797575/goto-connect.svg "GoTo Connect") [ GoTo Connect ](/products/goto-connect/reviews) ![Documo](https://images.g2crowd.com/uploads/product/hd_favicon/6fdf283368023f62320038f096816c9c/documo.svg "Documo") [ Documo ](/products/documo/reviews) **eFax Online Fax Service Alternatives** ![Amplify Ventures](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_28ad0ea059a00eacf4b949663a5f5360/amplify-ventures.png "Amplify Ventures") [ iFax ](/products/amplify-ventures/reviews) ![Documo](https://images.g2crowd.com/uploads/product/hd_favicon/6fdf283368023f62320038f096816c9c/documo.svg "Documo") [ Documo ](/products/documo/reviews) ![RingEX](https://images.g2crowd.com/uploads/product/hd_favicon/7fda7f2577052a09d5896be010850215/ringex.svg "RingEX") [ RingEX ](/products/ringex/reviews) ![GoTo Connect](https://images.g2crowd.com/uploads/product/hd_favicon/00b3f9d992d71d88395014c459797575/goto-connect.svg "GoTo Connect") [ GoTo Connect ](/products/goto-connect/reviews)