OnlinecityIo

What OnlinecityIo does

OnlineCity.io (legal entity ONLINECITY.IO ApS) is a privately held, bootstrapped Danish technology company founded in 1999 by Thomas Hofmann and Ulrik Hoffmann, headquartered in Odense with a secondary office in Copenhagen. The company operates three platforms under a unified OCiD login: GatewayAPI (launched 2016), a CPaaS offering providing SMS, Email, Virtual numbers, and Mobile Message APIs; RelationCity (launched 2021), an omnichannel marketing and communication platform supporting SMS, Email, and RCS services; and NexCon.io (launched 2019), a professional IoT and M2M SIM and eSIM connectivity service routing devices across 525+ global networks. The platforms are accessible through a single OCiD account, allowing customers to adopt one, two, or all three products without separate authentication flows.

The company monetizes through subscription and usage-based recurring revenue across each platform, distributes via an API-first, self-serve model targeting SMBs, developers, and integrators worldwide, and markets primarily through its website and LinkedIn presence. Pricing is not publicly disclosed and is obtained via direct sales contact. Documented customer segments include telemedicine providers, smart home device manufacturers and service providers, and logistics and fleet operators, with the company claiming tens of thousands of customers globally. The company carries ISAE 3402 (Type II) and ISAE 3000 (GDPR assurance) attestations, holds AAA creditworthiness, and has received consecutive Børsen Gazelle Awards from 2008 through 2025.

The business is operated by the two founders together with a small named leadership team including a Financial Controller, a Head of Commercial Operations, and a UX Designer. There is no evidence of external venture or private equity investment, no subsidiaries, no acquisitions, and no public listing. The company is, by all available signals, an organically grown, founder-controlled communication infrastructure business extending across messaging, marketing automation, and IoT connectivity for the global long tail of digital businesses.

Name

OnlinecityIo

Legal name

ONLINECITY.IO ApS

Website

https://onlinecity.io

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

1–10 employees

Short description

OnlineCity.io is a bootstrapped Danish technology company operating three integrated platforms — GatewayAPI for CPaaS, RelationCity for omnichannel marketing, and NexCon.io for IoT/M2M connectivity — accessible via a single OCiD login and serving tens of thousands of businesses worldwide.

Ownership category

akta.pro rank

Product category

Communications Platform as a Service (CPaaS)

NAICS

All Other Telecommunications (517810), Wired and Wireless Telecommunications (except Satellite) (5171)

SIC

Communications Services, Nec (4899)

akta.pro primary industry

IoT Connectivity Management (Private APN, SIM/eSIM, Device Connectivity) (HDAIAGAG)

Keywords

• CPaaS platform
• SMS API services
• IoT M2M connectivity
• Omnichannel marketing
• Global SIM management

Headquarters

HQ city

Odense

HQ country

Denmark

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Infrastructure, Personnel, Operations, Marketing or Sales

Revenue model

1. GatewayAPI Services: SMS API, Email API, Virtual numbers, and Mobile Message API services provided on a usage-based or subscription model
2. RelationCity Services: Marketing and communication platform providing SMS, Email, and RCS services across omnichannel marketing strategy
3. NexCon.io IoT SIM Services: IoT and M2M SIM and eSIM connectivity services connecting devices to 525+ global networks with data transfer and SMS capabilities

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

OnlineCity.io delivers three integrated communication platforms: GatewayAPI, a global CPaaS with SMS, Email, virtual numbers, and Mobile Message APIs; RelationCity, an omnichannel marketing and communication platform supporting SMS, Email, RCS, and a dedicated API; and NexCon.io, which provides professional IoT and M2M SIMs and eSIMs connecting devices to 525+ global networks with unified SIM management. All three platforms are accessible through a single OCiD login, allowing customers to use one, two, or all three through a single account.

Product overview

OnlinecityIo operates as a multi-platform technology company offering three distinct communication platforms under one unified system. GatewayAPI serves as the core CPaaS offering providing SMS, Email, and messaging APIs. RelationCity extends omnichannel marketing and communication capabilities across SMS, Email, and RCS channels. NexCon.io delivers IoT and M2M SIM/eSIM connectivity services to 525+ global networks. All three platforms are accessible through the unified OCiD login system, creating an integrated ecosystem for technology-based communication solutions.

Differentiator

Problem solved

Functional benefit

Brands

• GatewayAPI: Global CPaaS supercharged with a powerful SMS gateway. Simplifies sending business messages with SMS APIs, Email API, virtual numbers, keywords, and Mobile Message API.
• RelationCity
• NexCon.io

Products and services

• GatewayAPI GatewayAPI is a global CPaaS platform that simplifies sending business messages by removing complexity. It offers SMS APIs, an Email API, virtual numbers and keywords, and a Mobile Message API, letting businesses focus on building projects with intuitive APIs.
• RelationCity RelationCity is an advanced marketing and communication platform that fits into an omnichannel marketing strategy and enables businesses to communicate effectively across SMS, Email, and RCS channels via the RelationCity API.
• NexCon.io NexCon.io provides professional IoT and M2M SIMs and eSIMs that connect devices to 525+ global networks, allowing customers to manage all their SIMs in one place and handle communication via data transfer and SMS.

Quantifiable outcome

• Global coverage across 525+ networks

Segments3 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Vonage (Ericsson): Now part of Ericsson, Vonage provides CPaaS APIs for SMS, voice, and video plus UCaaS. A broader incumbent that competes with GatewayAPI on messaging APIs at the enterprise tier.
• Twilio: Global CPaaS leader offering SMS, email, voice, video, and customer engagement APIs. Sets the pricing and feature benchmark for OnlineCity.io's GatewayAPI and RelationCity; significant scale advantage and broader product portfolio.

Direct peers

• CM.com: Dutch CPaaS and payments platform offering SMS, email, WhatsApp, and conversational messaging APIs. Comparable European SMB-to-enterprise peer with multi-channel messaging product analogous to GatewayAPI and RelationCity.
• Infobip: Croatian-origin global CPaaS with SMS, RCS, email, and IoT connectivity offerings. Direct peer on the messaging API and IoT SIM business, with similar European roots and ambition to serve enterprise customers worldwide.
• Hologram: US-based IoT connectivity provider offering global cellular SIMs, eSIMs, and a connectivity management platform. Direct peer to NexCon.io on IoT SIM management and multi-network device connectivity.
• Sinch: Swedish-based global CPaaS provider offering SMS, voice, email, and messaging APIs at scale. Closest comparable to OnlineCity.io given Nordic/European roots, SMB-to-enterprise messaging focus, and recurring usage-based monetization.
• Plivo: Cloud communications platform offering SMS, voice, and messaging APIs to SMBs and enterprises. Comparable API-first CPaaS business with usage-based pricing and developer-focused positioning similar to GatewayAPI.
• Bird (formerly MessageBird): Dutch-headquartered omnichannel CPaaS platform providing SMS, email, WhatsApp, and marketing automation APIs. Overlaps directly with GatewayAPI and RelationCity on messaging APIs and omnichannel marketing.
• 1NCE: German IoT connectivity specialist offering flat-rate global cellular IoT SIMs and eSIMs across 2G/3G/4G/5G and NB-IoT. Direct peer to NexCon.io on IoT SIM and M2M connectivity, with similar target use cases in logistics and asset tracking.
• EMnify: German cloud-native IoT connectivity provider offering global cellular IoT SIMs, eSIMs, and an IoT management platform. Comparable to NexCon.io on IoT/M2M SIM cards and unified global network access.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/onlinecity
• Xx.com/onlinecity

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OnlinecityIo