Sail Internet
Sail Internet is a regional Bay Area ISP delivering gigabit fixed wireless and fiber-backed internet to residential, business, and MDU customers with flat-rate, no-contract pricing and 99.99% reliability.
- Company typePrivate
- Founded2015
- HeadquartersPalo Alto, United States
- Headcount1–10
- GTM typeB2B and B2C
- OfferingServices
What Sail Internet does
Sail Internet is a regional internet service provider founded in 2015 and headquartered in Santa Clara, California, delivering high-speed internet to residential and business customers across the San Francisco Bay Area and Silicon Valley. The company operates a hybrid fiber-optic backbone (100 Gbps) combined with next-generation fixed wireless technology from Tarana Wireless, enabling rapid metro-wide gigabit deployment that avoids the cost and time burden of trenching fiber or cable. Residential service offers up to 1 Gbps symmetrical speeds at flat monthly rates ($55-$65) with no contracts, no data caps, and free installation; business customers receive dedicated symmetrical service from 100 Mbps to 10 Gbps with 99.99% SLA-backed reliability, direct cloud peering, static IPs, and 24x7 monitoring. The product portfolio has expanded into managed WiFi, SD-WAN (via Bigleaf Networks), and POTS line replacement (via Granite EPIK), with distribution through direct sales, the Twist Broadband sub-brand, and a Channel Partners program targeting MDU property owners. Sail has executed strategic acquisitions (Paxio Residential in September 2024, adding 1,400 subscribers), launched new sub-brands (Twist Broadband in October 2024), and professionalized leadership with CEO Cardi Prinzi (February 2024).
Sail Internet firmographics
Firmographics- Name
- Sail Internet
- Legal name
- Sail Internet Inc.
- Website
- https://sailinternet.com
- Company type
- Private
- Founded year
- 2015
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Sail Internet is a regional Bay Area ISP delivering gigabit fixed wireless and fiber-backed internet to residential, business, and MDU customers with flat-rate, no-contract pricing and 99.99% reliability.
- Ownership category
- akta.pro rank
Sail Internet industry classification
Industry- Product category
- Fixed Wireless and Fiber Internet Service Provider
- NAICS
- Wired and Wireless Telecommunications Carriers (except Satellite) (51711)
- akta.pro primary industry
- Fiber ISPs (FTTH/FTTP Retail Providers) (HDAIADAE)
- akta.pro secondary industry
- Fiber-to-the-Premises (FTTP/FTTH) Broadband Providers (HDAIABAC)
Keywords
Where Sail Internet is headquartered
LocationHeadquarters
- HQ city
- Palo Alto
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Sail Internet business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Infrastructure, Operations, Personnel, Technology or R&D, Marketing or Sales
Revenue model
- Residential Internet Service: Monthly subscription internet service for single-family homes, condominiums, and apartments. Residential plans offer speeds up to 1 Gbps with no contracts, no data caps, and flat monthly rates. Revenue is recurring on a monthly billing cycle with automated payment methods.
- Business Internet Service: Business-class internet service ranging from 100 Mbps to 10 Gbps dedicated symmetrical connections, with optional SLA-backed reliability, static IP addresses, managed WiFi, and SD-WAN support. Billed monthly with customizable plans for enterprise, mid-market, and SMB customers.
- Managed WiFi Services: Customizable managed WiFi solutions for businesses and MDU properties, including property-wide infrastructure monitoring, 24x7 IoT connectivity, and multi-floor/small office coverage. Revenue generated as a recurring managed service component.
- Granite EPIK POTS Replacement: Analog phone line replacement service using Managed Facilities Voice Network (MFVN) technology, supporting legacy devices including fire alarms, POS systems, elevator phones, and building access systems. Sail installs and monitors Granite EPIK lines as a managed service for business customers.
- Professional Installation: Free standard installation is offered for all residential orders. Custom wiring requests may result in additional fees communicated prior to installation. Business installations are handled by experienced technicians.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Sail GIG Residential (Multifamily) - Up to 1 Gbps symmetrical |
| Subscription | Monthly | Sail Residential Plans - Starting price |
| Subscription | Monthly | Sail Dedicated Internet - 100 Mbps to 10+ Gbps dedicated symmetrical |
| Subscription | Monthly | Sail Broadband - Small business optimum service |
| Subscription | Monthly | Managed WiFi - Business property-wide wireless |
| Other | Pay-as-you-go | Termination Fee Relief - Switcher incentive |
Go-to-market motion3 records
Distribution channels5 records
Marketing channels7 records
Sail Internet product offering
Product offeringCore offering
Sail Internet delivers high-speed fixed wireless and fiber-optic internet services to residential and business customers in the San Francisco Bay Area and Silicon Valley. The company offers gigabit-speed connectivity for homes (up to 1 Gbps) and dedicated symmetrical service for businesses (100 Mbps to 10 Gbps+) over a 100 Gbps fiber backbone, supported by 99.99% uptime SLAs, no contracts, no data caps, and flat-rate pricing. It also provides managed WiFi, MDU community solutions, and POTS line replacement via the Granite EPIK partnership.
Product overview
Sail Internet is a regional internet service provider offering a unified suite of fixed wireless and fiber-optic internet services for residential and business customers in the San Francisco Bay Area and Silicon Valley. The core product portfolio includes Sail Residential (for single family and multifamily homes up to 1 Gbps), Sail Dedicated Internet (business-class dedicated service from 100 Mbps to 10 Gbps with SLA-backed 99.99% reliability), Sail Broadband (small business service), and Sail Managed WiFi (enterprise wireless solutions). Add-on services include Phone Line Replacement/Copper Replacement (Granite EPIK-powered POTS replacement), referral programs, channel partner program, and MDU solutions under 'Sail For Communities'. The company operates subsidiary brand Twist Broadband and acquired Paxio Residential in September 2024, all unified under the company's flat-rate, no-contract service model.
Differentiator
Problem solved
Functional benefit
Products and services
- Sail Residential
- Sail Dedicated Internet
- Sail Broadband
- Sail Managed WiFi
- Copper Replacement (Granite EPIK POTS Replacement)
- Twist Broadband
- Sail For Communities (MDU Solutions)
Quantifiable outcome
- 99.99% uptime guarantee for business-class service backed by 100 Gbps fiber-optic backbone
- +3 more outcomes
Companies that use Sail Internet
Customer profileNamed customers3 records
Segments4 records
Ideal customer profiles4 records
Sail Internet technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Sail Internet partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core.
- Bigleaf NetworkscoreSail Internet partnered with Bigleaf Networks to provide Bay Area businesses with always-on connectivity and enhanced network reliability. The partnership enables Sail to offer SD-WAN services with diverse multi-circuit internet connections backed by Bigleaf's intelligent routing technology.
- Granite EPIKcoreSail Internet partners with Granite EPIK to deliver Managed Facilities Voice Network (MFVN) as a POTS line replacement solution for business customers. Sail installs and monitors the Granite EPIK lines, offering a triple-redundant voice solution (hardline + dual 4G LTE) with battery backup up to 24 hours. Granite EPIK is approved by FDNY and California State Fire Marshall for life safety applications.
- Tarana WirelesscoreTarana Wireless provides the next-generation fixed wireless technology that enables Sail to rapidly deploy gigabit-speed internet across metro areas. Sail leveraged Tarana's platform to deploy its San Jose metro-wide network in weeks rather than the months required for fiber or cable deployment.
- Twist BroadbandcoreTwist Broadband is a new ISP brand powered by Sail Internet's infrastructure and technology, launched in San Jose, Santa Clara, and Milpitas targeting 50,000+ households. Sail provides infrastructure and resources enabling Twist to rapidly stand up a metro-wide network using next-generation fixed wireless technology.
Scale indicators8 records
Recent moves6 records
Expansion highlights6 records
Sail Internet competitors and assessment
Company assessmentDirect peers
- Sonic (Sonic.net): Long-standing Berkeley-based independent ISP offering fiber and DSL broadband to residential and business customers across the Bay Area. Highly comparable as a regional fixed-line ISP competing against the same Comcast/AT&T incumbents, with a similar customer-experience and privacy-focused value proposition.
- Monkey Brains: San Francisco-based fixed wireless and fiber ISP serving residential and business customers, particularly in dense SF neighborhoods. Directly comparable to Sail's Bay Area fixed wireless + fiber model and SMB/business focus.
- Etheric Networks: Bay Area fixed wireless internet provider delivering business and residential broadband, including to underserved and multi-tenant properties. Closely comparable in technology stack (fixed wireless with fiber backhaul) and regional Bay Area market overlap.
- Common Networks: Alameda-based fixed wireless ISP serving Bay Area residential customers as a competitive alternative to cable. Directly comparable fixed wireless + gigabit consumer offering; same incumbents and similar MDU/HOA go-to-market.
- Starry: Fixed wireless broadband ISP using millimeter-wave technology to deliver gigabit service to multi-family and urban residential properties. Highly comparable business model (MDU-led, fixed wireless, no-contract flat pricing) though national in scope.
- Google Fiber Webpass: Google Fiber's fixed wireless service delivering gigabit to multi-tenant buildings in the Bay Area and other metros. Comparable as a fixed wireless ISP in the same Bay Area MDU market that Sail targets, with greater scale and brand.
Broad incumbents
- AT&T Internet (AT&T Fiber): Major incumbent ISP offering fiber and IPBB across Sail's entire Bay Area footprint, including the AT&T U-verse platform co-founded by Sail CTO Kevin Fisher. Largest direct competitor by footprint, pricing power, and capital.
- Comcast Xfinity: Dominant cable broadband incumbent across the Bay Area, repeatedly cited in Sail's own marketing as the provider customers are switching from. Sets the price/speed baseline Sail competes against and has effectively unlimited capital for competitive response.
- Frontier Communications: National fiber and copper broadband provider expanding fiber-to-the-home in parts of the Bay Area and surrounding California markets. Comparable as a multi-market wireline broadband competitor, with overlapping enterprise/dedicated internet offerings.
Emerging players
- T-Mobile Home Internet: 5G fixed wireless home internet service from a national mobile carrier using excess network capacity. Comparable as a no-contract, no-data-cap alternative to cable in Bay Area suburbs; represents a meaningful emerging substitute for Sail's residential fixed wireless product.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Sail Internet social profiles
Digital presenceSail Internet financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sail Internet leadership team
Management profileNumber of profiles
Profiles5 records
Sail Internet subsidiaries and ownership
Company hierarchySubsidiaries1 record
Sail Internet funding detail
Funding detailFunding overview
Funding rounds4 records
Investors10 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sail Internet M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sail Internet
What does Sail Internet do?
Sail Internet delivers high-speed fixed wireless and fiber-optic internet services to residential and business customers in the San Francisco Bay Area and Silicon Valley. The company offers gigabit-speed connectivity for homes (up to 1 Gbps) and dedicated symmetrical service for businesses (100 Mbps to 10 Gbps+) over a 100 Gbps fiber backbone, supported by 99.99% uptime SLAs, no contracts, no data caps, and flat-rate pricing. It also provides managed WiFi, MDU community solutions, and POTS line replacement via the Granite EPIK partnership.
Is Sail Internet a public or private company?
Sail Internet is a private company. It is classified as venture growth investor backed and is currently operating.
When was Sail Internet founded?
Sail Internet was founded in 2015. It employs 1 to 10 people.
Where is Sail Internet based?
Sail Internet is headquartered in Palo Alto, United States, in the North America region.
How does Sail Internet make money?
Five revenue lines are on record. Residential Internet Service is the primary driver. The others are business Internet Service, managed WiFi Services, granite EPIK POTS Replacement and professional Installation.
Who are Sail Internet's main competitors?
Direct peers on record are Sonic (Sonic.net), Monkey Brains, Etheric Networks, Common Networks, Starry and Google Fiber Webpass. Broad incumbents are AT&T Internet (AT&T Fiber), Comcast Xfinity and Frontier Communications. T-Mobile Home Internet is listed as an emerging player.
Does Sail Internet have an API?
No public API is recorded for Sail Internet.
What industry is Sail Internet in?
Sail Internet's product category is Fixed Wireless and Fiber Internet Service Provider. Its primary akta.pro industry code is HDAIADAE, Fiber ISPs (FTTH/FTTP Retail Providers), with a secondary code of HDAIABAC, Fiber-to-the-Premises (FTTP/FTTH) Broadband Providers. Its NAICS code is 51711.