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Head-to-head · Online Fax Services

Esker Cloud Fax Services vs InterFAX

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Esker Cloud Fax Services #6 in Online Fax Services 8.5/10 Pricing on request ✓ 3 of 4 features Visit Esker
InterFAX #7 in Online Fax Services 8.4/10 Pricing on request · 30-day trial Free trial✓ 2 of 4 features Visit InterFAX

Esker Cloud Fax Services leads on 0 checks, InterFAX on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreEsker Cloud Fax Services · 8.5/10
  • Free trialonly InterFAX
  • Most featuresEsker Cloud Fax Services · 3 of 4

Esker Cloud Fax Services scores higher on our rubric for online fax services: 8.5 against 8.4 out of 10; our editors rank them #6 and #7.

Esker Cloud Fax Services is the better fit for ERP-centric enterprises needing global routing. InterFAX is the better fit for teams needing fax automation and delivery records.

  • Esker Cloud Fax Services fits best

    ERP-centric enterprises needing global routing

  • InterFAX fits best

    Teams needing fax automation and delivery records

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Esker Cloud Fax Services 8.5/10 Visit ↗ InterFAX 8.4/10 Visit ↗
At a glance
Editor score 8.5 8.4
Ranking #6 in Online Fax Services #7 in Online Fax Services
Best for ERP-centric enterprises needing global routing Teams needing fax automation and delivery records
Pricing model Paid Paid
Starting price — Pricing on request · 30-day trial
Free plan — —
Free trial — 30 days
Deployment Cloud Cloud, Browser extension
Platforms Web Web, Android, iOS
Compliance HIPAA HIPAA, PCI DSS, ISO 27001
Integrations 7 integrations 5 integrations
Built for Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Esker Cloud Fax Services 3/4 · InterFAX 2/4
Virtual fax number ✓ (best) Not checked yet
Inbound faxing ✓ ✓
Mobile apps Not checked yet —
International faxing ✓ ✓
Specs
Monthly page allowance Not checked yet Not checked yet
Compliance support Hipaa Hipaa
Users included Not checked yet Not checked yet
Our review
Pros
  • Inbound and outbound faxing with virtual fax numbers
  • ERP integrations, workflow routing, archiving, and search
  • Global least-cost routing with encrypted transmission
  • Send and receive faxes via web, email or mobile web
  • REST and SOAP APIs support workflow automation and routing
  • Delivery confirmations, transmission records and OCR indexing
Cons
  • Pricing uses a contact-sales model
  • No free plan is available
  • Fax-focused scope may not suit broader communications needs
  • Pricing is tailored through sales rather than published as a standard plan
  • Mobile access is through the web, not native iOS or Android apps
  • No free plan is offered
Our verdict

Esker Cloud Fax Services is a business-oriented SaaS fax service for sending and receiving faxes through ERP systems, desktop tools, and business applications. It supports inbound and outbound faxing, international delivery, virtual fax…

Read the review →

InterFAX is Upland Software’s cloud fax service for organizations that need inbound and outbound faxing without maintaining fax hardware or phone lines. Teams can send and receive through a web interface, email, mobile web access or a…

Read the review →
  1. Esker Cloud Fax ServicesOnline Fax Services 8.5Pricing on request
  2. InterFAXOnline Fax Services 8.4Pricing on request · 30-day trial

Strengths and trade-offs

  • Esker Cloud Fax Services — where it wins

    • Inbound and outbound faxing with virtual fax numbers
    • ERP integrations, workflow routing, archiving, and search
    • Global least-cost routing with encrypted transmission

    Where it doesn't

    • Pricing uses a contact-sales model
    • No free plan is available
    • Fax-focused scope may not suit broader communications needs

  • InterFAX — where it wins

    • Send and receive faxes via web, email or mobile web
    • REST and SOAP APIs support workflow automation and routing
    • Delivery confirmations, transmission records and OCR indexing

    Where it doesn't

    • Pricing is tailored through sales rather than published as a standard plan
    • Mobile access is through the web, not native iOS or Android apps
    • No free plan is offered
  • Esker Cloud Fax Services8.5/10 · Pricing on request

    A pay-per-use fax service built for ERP-connected, globally distributed operations.

    Visit EskerFull verdict →
  • InterFAX8.4/10 · Pricing on request · 30-day trial

    A cloud fax service with automation, delivery records and REST/SOAP APIs.

    Visit InterFAXFull verdict →

More comparisons

All online fax services comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update