Messaging Startups

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1 investor

Enveloop is a developer-focused message builder and API for designing and sending transactional emails and texts from an application through a single implementation, separating message content from code so non-developers can edit it. It targets developers, consultants and product teams building apps that need to communicate with users.

1 investor

Fibo offers a SaaS calendar and messaging application aimed at small and medium-sized businesses.

1 investor

Guggy built communication and creation products, including a contextual messaging API that analyzed text messages and automatically generated matching GIF responses, and Bits, a short-form video app for comedic scene creation. Its messaging engine was integrated into platforms such as Facebook Messenger, Viber, Kik, Telegram, and Slack, serving creators and messaging-app users.

1 investor

Heysan was a free mobile messaging service and community that bridged instant messaging with SMS, allowing free messaging between phones and computers. It grew to over 1 million users and was later acquired by Good Technology.

1 investor

HoverChat is a messaging app designed for multitasking, letting users send messages without interrupting their current activity. It is currently available on Android phones.

1 investor

Locent provides an automated messaging platform for companies.

1 investor

Medigram is a HIPAA-compliant messaging and workflow platform for physicians and patient care teams, offering secure text, image, and audio communication across hospital networks and flagging insights from clinician chats for hospital operations and patient care. It provides client apps for iOS, Android, desktop, and web aimed at reducing critical response times in healthcare settings.

1 investor

MessageParty provided a local chat and messaging service for connecting people.

1 investor

Outbound lets non-technical marketers and product teams create automated messages — email, iOS/Android push notifications, SMS, web, and voice — triggered by customer actions, and test how well each message performs. It organizes outbound messaging around user behavior.

1 investor

Sendo provides an SMS and RCS API for startups, offering lower pricing than competitors and faster deployment for text messaging features. The platform includes developer documentation, monitoring tools, and simplified 10DLC regulatory compliance.

1 investor

A messaging platform that enables consumers to contact businesses, now integrated into Google Maps.

1 investor

Talkray (TiKL) offers a mobile app that turns a smartphone into a push-to-talk walkie-talkie, letting users instantly talk or text with individuals or groups of friends. The free app is available on Android and iPhone.

1 investor

Tellfi offers an online business phone system with features such as extensions, call forwarding, and voicemail, aimed at small businesses looking for an inexpensive setup. The service is positioned as a low-cost alternative starting at about $10 a month.

1 investor

Threadable is a mailing list management tool designed to make group email less noisy and more actionable.

1 investor

Tsumobi develops a mobile messaging technology that uses its own programming language on top of J2ME, letting developers deliver and update mobile applications on the fly through URLs on Tsumobi-enabled sites. It targets mobile application developers seeking easier distribution and upgrades.

1 investor

VoiceGem was a voice messaging platform. The company was acquired by Palantir in 2013.

1 investor

Zip Phone offered a voice communication app, positioned as a "WhatsApp for voice." The company was part of Y Combinator's Summer 2014 batch and was later acquired.

1 investor