eCal
eCal operates a B2B calendar marketing platform that delivers publishers' and brands' events directly into end users' Google, Apple and Microsoft digital calendars via embeddable widgets, REST APIs and the Private Events API, serving 400-plus enterprise customers (predominantly sports leagues, ticketing and media/streaming brands) across seven global offices.
- Company typePrivate
- Founded1997
- HeadquartersPhiladelphia, United States
- Headcount251–500
- GTM typeB2B
- OfferingSoftware
What eCal does
eCal operates a calendar marketing platform that enables publishers and brands to deliver smart, dynamic, personalized events directly into end users' personal digital calendars on Google, Apple, Microsoft/Outlook and ICS — bypassing email inboxes and social feeds with a claimed 100% delivery rate. The platform is built around embeddable 'Sync to Calendar' widgets (current generation Button Code V2, released May 2025), four-mode Event Display widgets (calendar, page, carousel, column), and a REST API (v2) at api.ecal.com with webhook notifications, Private Events for subscriber-specific reminders, a Data Delivery Service to sFTP/S3, and ECAL Pay for in-calendar payments. Underlying technical assets include preferential API access to Google Calendar, 30+ language support, geo-localization, GDPR/CCPA/UK GDPR compliance and AWS-hosted infrastructure with 99.99% uptime.
The company sells primarily to enterprise publishers and brands through tiered product packages — ECAL Community, ECAL Business and ECAL Enterprise — alongside a self-serve API-first PLG motion with developer documentation and embedded widgets, plus a field-sales/enterprise demo motion for large accounts. The customer base spans more than 400 top-tier brands and 30 million end-user calendars, heavily weighted to professional sports leagues and governing bodies (Premier League, NBA, MLB, NHL, NASCAR, IndyCar, ICC, World Rugby, World Athletics, AFL, NRL, NBL, Cricket Australia, EuroLeague, Inter Miami CF, Betfred Super League, Stoiximan GBL, EFL) and media/streaming platforms (Disney+, Fox Sports, SiriusXM, The Skimm), with additional verticals in ticketing, venues, fitness, arts & culture, education, gaming and payment reminders.
Revenue is generated through quote-based recurring B2B platform subscriptions paid by publishers and brands; the service is free for end users. eCal is privately held and operated by HyperKu Pte Ltd (Singapore) with wholly-owned regional subsidiaries in Australia, the UK and the US, and operational offices in Melbourne (headquarters), London, Singapore, Los Angeles, Paris, Tokyo and Riyadh. No external institutional investors or recent disclosed funding rounds are referenced; capital history traces to ~$18.25M of cumulative venture funding in 1999-2000 (net2phone, Reuters, East West Capital) and the 2000 acquisition of iPing Inc.
eCal firmographics
Firmographics- Name
- eCal
- Legal name
- HyperKu Pte Ltd
- Website
- https://ecal.com
- Company type
- Private
- Founded year
- 1997
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- eCal operates a B2B calendar marketing platform that delivers publishers' and brands' events directly into end users' Google, Apple and Microsoft digital calendars via embeddable widgets, REST APIs and the Private Events API, serving 400-plus enterprise customers (predominantly sports leagues, ticketing and media/streaming brands) across seven global offices.
- Ownership category
- akta.pro rank
eCal industry classification
Industry- Product category
- Calendar Marketing Platform
- NAICS
- Spectator Sports (71121)
- SIC
- Services-Advertising (7310)
- akta.pro primary industry
- Fan Engagement & Onsite Technology (RFID, Cashless, Apps) (MPAGAAAL)
Keywords
Where eCal is headquartered
LocationHeadquarters
- HQ city
- Philadelphia
- HQ country
- United States
- HQ region
- North America
Offices7 records
Markets served
eCal business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Marketing or Sales, Infrastructure, Operations
Revenue model
- B2B Platform Services: ECAL provides its calendar marketing platform to publishers and brands (sports leagues, media companies, ticketing providers, etc.) who pay to deliver events to end users' calendars. The service is free for end users; revenue comes from the publishers/brands using the platform.
Go-to-market motion1 record
Distribution channels7 records
Marketing channels8 records
eCal product offering
Product offeringCore offering
eCal (ECAL) operates a calendar marketing platform that enables brands, publishers, sports leagues, media companies, and ticketing providers to deliver smart, dynamic, personalized events directly into end users' personal digital calendars (Google, Apple, Microsoft). The offering comprises embeddable Sync-to-Calendar buttons, configurable Event Display widgets, a Private Events API for subscriber-specific reminders (payments, bookings, itineraries), and a RESTful developer API with webhook and sFTP/S3 CRM data integrations. The service is free for end users and monetized via enterprise subscriptions to publishers and brands.
Product overview
ECAL is a calendar marketing platform — not a single app but a multi-tiered platform ecosystem. The core ECAL Calendar Marketing Platform serves as the foundation, with three commercial product tiers: Community (for community groups), Business (for businesses), and Enterprise (for secure private events use cases). The platform is built around two primary widgets: the ECAL Sync Button (enabling users to subscribe to events via a 'sync to calendar' button) and the ECAL Event Display (an embeddable event listing widget available in calendar, page, carousel, and column modes). Supporting modules include Private Events (for subscriber-specific personalized event reminders such as payments, bookings, and itineraries via a dedicated API), ECAL Pay (instant in-calendar payments), and Manage My ECAL (a self-service subscriber portal). Developer access is provided through the ECAL REST API v2, Webhook Notifications (for real-time subscriber data), and the Data Delivery Service (for periodic CSV-based CRM data exports). The platform connects to major calendar programs including Google Calendar, Outlook.com, Apple Calendar, and ICS.
Differentiator
Problem solved
Functional benefit
Products and services
- ECAL Calendar Marketing Platform A calendar marketing platform that enables brands and publishers to deliver smart, dynamic, personalized, and actionable events directly into end users' personal digital calendars (Google, Apple, Microsoft). The platform provides Sync-to-Calendar widgets, embeddable Event Displays, Private Events for personalized reminders, and integrations with major calendars via REST API and webhooks. Targeted at enterprise publishers and brands across sports, media, ticketing, and subscription verticals.
- ECAL Developer API (REST API v2, Webhooks, Data Delivery Service, Private Events) A RESTful developer API (API v2) enabling programmatic management of calendars, events, and subscribers, plus a Private Events API for subscriber-specific events, Webhook Notifications for real-time subscriber data delivery (with optional AES-GCM encryption), and a Data Delivery Service for periodic CSV exports via sFTP or AWS S3. Authentication uses apiKey and apiSign (MD5). Rate limits: max 1,000 records per batch, 1 request per 2 seconds ingress. Targeted at developers and engineering teams at publisher and brand customers.
Quantifiable outcome
- In 2025, the average organization using the ECAL platform generated a 34.5x ROI on their calendar marketing investment
- +3 more outcomes
Companies that use eCal
Customer profileNamed customers22 records
Segments9 records
Ideal customer profiles4 records
eCal technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration4 records
AI capability4 records
Feature9 records
eCal partnerships and signals
Strategic signalScale indicators7 records
Recent moves6 records
Expansion highlights6 records
eCal competitors and assessment
Company assessmentDirect peers
- AddEvent: AddEvent provides 'Add to Calendar' buttons, event widgets, and calendar sync services for publishers, directly overlapping with ECAL's core Sync Button and Event Display offerings to similar B2B marketing and event customers.
- Mixmax: Mixmax is a calendar-driven sales engagement and meeting scheduling platform that embeds calendar interactions directly into sales workflows. It overlaps with ECAL's calendar-sync and event notification approach, particularly in B2B sales and event-driven use cases.
Broad incumbents
- Mailchimp: Mailchimp is a dominant email-first marketing platform serving SMB and mid-market brands, including many sports, ticketing, and venue customers. As a broad incumbent in marketing communications, it competes for the same enterprise budgets ECAL targets.
- Salesforce Marketing Cloud: Salesforce Marketing Cloud is a large enterprise marketing suite (email, mobile, social, advertising, data) sold to the same global brand and media customers ECAL serves. It represents the most likely broad incumbent to bundle a competing calendar notification capability.
- HubSpot: HubSpot is a broad marketing automation, CRM and content platform used by mid-market and enterprise marketers. It competes with ECAL for marketing budget allocation and could easily extend its workflow tools to include calendar-based notifications.
- Iterable: Iterable is a cross-channel marketing automation platform (email, push, SMS, in-app) used by enterprise brands. It competes with ECAL for enterprise marketing budgets and could add calendar sync as a native channel, making it a broader incumbent competitor.
- Braze: Braze is a customer engagement platform spanning email, push, in-app and SMS messaging for large consumer brands. It targets the same enterprise marketer buyers as ECAL and could bundle calendar notifications as an additional channel within its orchestration suite.
Emerging players
- Calendly: Calendly is a widely adopted scheduling and calendar automation platform for meetings and appointments. While focused on 1:1 scheduling rather than broadcast event marketing, it shares ECAL's calendar-API integration depth and developer-first positioning.
- OneSignal: OneSignal is a leading push notification, email, SMS and in-app messaging platform used by product and marketing teams. It competes with ECAL for the attention-capture and engagement use cases that ECAL's calendar channel addresses, especially for sports and media apps.
Others
- Eventbrite: Eventbrite is a leading ticketing and event-marketing platform serving concerts, festivals, and live experiences. It sits adjacent to ECAL as both serve event organizers and ticketing customers, and could integrate calendar sync natively to disintermediate ECAL in that vertical.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
eCal social profiles
Digital presenceeCal compliance and trust
Trust signalCompliance5 records
eCal financial estimates
Financial estimateRevenue estimate
Valuation estimate
eCal leadership team
Management profileNumber of profiles
eCal subsidiaries and ownership
Company hierarchySubsidiaries3 records
eCal funding detail
Funding detailFunding overview
Funding rounds2 records
Investors3 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
eCal M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about eCal
What does eCal do?
eCal (ECAL) operates a calendar marketing platform that enables brands, publishers, sports leagues, media companies, and ticketing providers to deliver smart, dynamic, personalized events directly into end users' personal digital calendars (Google, Apple, Microsoft). The offering comprises embeddable Sync-to-Calendar buttons, configurable Event Display widgets, a Private Events API for subscriber-specific reminders (payments, bookings, itineraries), and a RESTful developer API with webhook and sFTP/S3 CRM data integrations. The service is free for end users and monetized via enterprise subscriptions to publishers and brands.
Is eCal a public or private company?
eCal is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was eCal founded?
eCal was founded in 1997. It employs 251 to 500 people.
Where is eCal based?
eCal is headquartered in Philadelphia, United States, in the North America region.
How does eCal make money?
One revenue line is on record: B2B Platform Services.
Who are eCal's main competitors?
Direct peers on record are AddEvent and Mixmax. Broad incumbents are Mailchimp, Salesforce Marketing Cloud, HubSpot, Iterable and Braze. Emerging players are Calendly and OneSignal. Eventbrite is listed as an others.
Does eCal have an API?
Yes. ECAL offers a RESTful API (API v2) for direct integration with the ECAL service. The endpoint is https://api.ecal.com. The API supports CRUD operations on Calendars, Events, and individual Subscribers. Available resources include Authentication, Account, Calendar, Event, Errors, and Subscriber. ECAL also provides a Private Events API for managing subscriber-specific private events (single and batch). Authentication uses apiKey and apiSign (MD5 signed). Rate limits apply: max 1,000 records per batch request, 1 request per 2 seconds ingress rate. A Postman collection is available for testing. ECAL also supports Webhook Notifications for real-time subscriber data delivery and a Data Delivery Service for periodic CSV exports to sFTP or AWS S3 buckets. Developer documentation is at docs.ecal.com.
What industry is eCal in?
eCal's product category is Calendar Marketing Platform. Its primary akta.pro industry code is MPAGAAAL, Fan Engagement & Onsite Technology (RFID, Cashless, Apps). Its NAICS code is 71121 and its SIC code is 7310.