push-notifications
(15)
Superfans.io wants your best customers to skip the queue
The company formerly known as Vajro turns Shopify stores into mobile apps for repeat buyers. Its wager: early access, live shopping, and a little recognition can give customers a reason to return.
The Game Studio That Put a Message in Everyone's Pocket
OneSignal began with a game studio's awkward discovery: getting people to download an app was easier than giving them a reason to return. Its answer became the plumbing behind billions of daily messages - and a lesson in when to speak, when to wait, and what a notification is worth.
Leanplum Bet the App Could Change Its Mind
It began with two engineers, one wrong customer, and a useful embarrassment. Leanplum learned that the best experiment was not inside the app - it was deciding who the product was really for.
Airship Bet on Push Notifications. The Real Business Was Everything After the Tap.
The company that helped invent commercial push nearly broke its early data stack. Seventeen years later, Airship sells a broader lesson: the notification is only useful if the experience after it earns the tap.
Klaviyo Crashed Braze's Party With SMS And Push
Klaviyo built an empire on ecommerce email. Its move into SMS and mobile push has now pulled it onto Braze's turf, and the fight is narrowing to one prize - the Shopify brand that wants everything in one place.
Customer.io
How a lunch-break side project for developers turned into a $100M messaging engine trusted by Notion, Buffer, and thousands of other data-driven teams.
Braze
The customer engagement platform that grew out of a hackathon now routes trillions of messages a year for brands from Burger King to the NBA - and it is betting its next chapter on AI agents that draft and send campaigns for marketers.
Polymorph
Polymorph is a San Francisco startup (Y Combinator W26) building personalization infrastructure for consumer and self-serve software teams. It turns product behavior into live user profiles and uses AI agents to run thousands of continuous experiments, automatically tailoring the timing, channel, and content of lifecycle messaging - push, in-app, email, SMS - for each user, with clear attribution on what drove conversion. The pitch: give any team the kind of adaptive, per-user experience that companies like Meta, TikTok, and Google spend years and whole orgs building.
Vero
Vero is a Sydney-based customer engagement platform that helps product-led teams send personalized email, mobile push and SMS messages triggered by what users actually do inside a product. Founded in 2012 by Chris Hexton and James Lamont, Vero pairs a real-time behavioural workflow engine with Vero Connect, an approach that reads directly from a company's data warehouse so teams can message customers without duplicating their data into yet another marketing tool.
Knock
Knock is a New York-based notification and customer-engagement infrastructure company that gives developers a single API and dashboard to design, manage, and deliver messages across in-app, email, SMS, push, and chat channels. Founded in 2021 by former Frame.io leaders Sam Seely and Chris Bell, Knock lets product and engineering teams ship cross-channel notification workflows without building and maintaining an in-house system, and now powers messaging for companies like Vercel, Webflow, Amplitude, and Clay.
Iterable
Iterable is a San Francisco-based AI customer engagement platform that lets consumer brands coordinate personalized messaging across email, SMS, push, in-app, and web from a single system. Founded in 2013 by ex-Google engineer Andrew Boni and ex-Twitter engineer Justin Zhu, it uses unified behavioral and product data plus a growing set of AI agents, branded Nova, to build, test, and optimize customer journeys in real time. The company reached a $2 billion valuation in 2021 and serves brands including DoorDash, Fabletics, HelloFresh, Redfin, and SeatGeek.
Modo Labs
Modo Labs is a Boston-based software company that lets universities and enterprises build branded mobile and web apps without deep engineering teams. Born from an open-source MIT project, its no-code/low-code platform stitches together backend systems - student records, HR, calendars, building controls - into one personalized digital experience for campuses and workplaces. Its Modo Campus and Modo Workplace products serve organizations across 100+ countries, and the company was named a Leader in the 2026 Gartner Magic Quadrant for Workplace Experience Applications.
Courier
Courier is a San Francisco notification infrastructure platform that lets developers add multi-channel messaging - email, SMS, push, in-app, Slack and more - to their apps through a single API and a drag-and-drop designer. Often described as 'Stripe for notifications,' it routes messages intelligently across channels so engineering teams stop rebuilding notification systems from scratch. Founded in 2019 (YC S19), Courier raised a $35M Series B led by GV in 2022 and powers notifications for companies like New Relic, LaunchDarkly, Lattice, Vanta and Contentful.
MoEngage
MoEngage is an insights-led customer engagement platform that helps consumer brands unify customer data, surface AI-driven insights, and orchestrate personalized cross-channel campaigns across push, email, SMS, in-app, web, and WhatsApp. Used by more than 1,350 global brands, it combines analytics, segmentation, and journey automation in a single dashboard powered by its Sherpa and Merlin AI engines.
Brevo
Brevo (formerly Sendinblue) is a Paris-based all-in-one customer engagement platform serving 500,000+ businesses across 180 countries. The platform combines email marketing, SMS, CRM, live chat, and marketing automation under one roof — all priced by email volume rather than contact count. Founded in 2012 by Armand Thiberge, Brevo rebranded from Sendinblue in 2023 to reflect its evolution from an email tool into a full customer lifecycle platform. In December 2025 it achieved unicorn status after raising €500 million in a Series C round led by General Atlantic and Oakley Capital, with a valuation exceeding €1 billion.