The San Francisco platform that lets brands message customers across every channel in real time - now betting its future on AI agents.
ITERABLE — The customer engagement platform, headquartered at 201 Spear St, San Francisco. Brand mark as used across the company's 2026 identity.
Iterable is a customer engagement platform. In plain terms, it is the software a consumer brand uses to talk to its customers - the welcome email, the abandoned-cart nudge, the shipping text, the push notification that pulls someone back into an app. What sets it apart is that all of those live in one place, built on the same underlying data.
Most companies once stitched this together from separate tools: one vendor for email, another for SMS, a third for push. Messages fired on fixed schedules, and each channel knew little about the others. Iterable's pitch, from its 2013 founding, was that this should be a single coordinated system driven by what a customer actually does, moment to moment.
The company describes the difference this way: most platforms react, while Iterable is built to adapt in real time. A customer's behavior - a purchase, a browse, an app open - flows in as data and can immediately reshape what they see next, across whichever channel reaches them best.
Iterable was founded in 2013 by Andrew Boni and Justin Zhu, engineers who came to marketing from the outside. Boni had worked at Google on AdSense; Zhu was an engineer at Twitter. Neither had a traditional marketing background, and that turned out to be the point.
By multiple accounts, the idea took shape while Boni watched internal marketing campaigns at Google get stuck in what he described as friction and red tape - simple ideas that took far too long to ship because the tooling fought the people using it. The pair set out to build the system they wished had existed: one where a marketer could design a personalized, multi-channel journey without filing a ticket with engineering every time.
The name itself carries the engineering mindset. Marketing, in Iterable's framing, is not a campaign you launch once and forget - it is something you iterate on, test, and improve continuously.
The platform is organized around getting unified data in, then turning it into coordinated, personalized messaging out.
Cross-channel engagement across email, SMS, push, in-app, and web push - built on one unified view of the customer.
A drag-and-drop canvas for multi-step, multi-channel journeys with branching logic, A/B testing, and frequency capping - no engineering required.
Build, send, and measure one-off, triggered, and transactional messages, then read results back into the same data model.
Predictive Goals, Copy Assist, Explainable AI, Brand Affinity scoring, Send Time Optimization, and Automatic Frequency Optimization.
An AI layer with agents that autonomously build, QA, and optimize campaigns, plus Nova Decisioning and Nova Insights.
Unifies behavioral, product, and engagement data so messages can trigger on what a customer does the moment they do it.
In 2023, Iterable shipped 37 AI-powered features in a single year - an aggressive cadence for a company its size. In 2025 it went further, introducing Nova: a suite of AI agents meant to take over the mechanical parts of a marketer's job, from assembling a campaign to checking it to tuning it after launch.
Then-CEO Andrew Boni framed Nova as a kind of death certificate for the traditional campaign - the batch-and-blast idea where everyone on a list gets the same message at the same time. The alternative Iterable is pushing is closer to a running conversation, adjusted per person and per moment by software rather than by a marketer hand-building each variant.
More than 1,000 companies run on Iterable - concentrated in retail, media, e-commerce, travel, fintech, and health. Among them: DoorDash, Fabletics, HelloFresh, Redfin, SeatGeek, The Washington Post, Square, PGA of America, The Athletic, Stanley Black & Decker, ClickUp, Calm, Box, and Grammarly.
Revenue increase attributed to real-time, behavior-driven messaging.
Net dollar retention increase, with a 5% reactivation boost.
Lift in e-commerce clicks, alongside an 80% cut in email templates.
Figures as reported by Iterable and its customers; treat as company-provided results.
The customer engagement category is crowded. Klaviyo dominates direct-to-consumer e-commerce; Braze anchors the high end with global enterprises; Salesforce Marketing Cloud and Adobe/Marketo sell into the largest, most complex organizations. Iterable positions itself in the seam between Klaviyo's DTC focus and Braze's enterprise scale - genuine multi-channel capability at a more approachable price point.
In broader customer-engagement market-share rankings, incumbents like Intercom lead by installed base. Iterable's edge is less about raw share and more about the combination its buyers describe: an unusually intuitive journey builder, real-time data, and an aggressive AI roadmap.
Customer-engagement category share, illustrative (6sense). Iterable competes on capability and price position rather than category-wide share.
Iterable runs a classic B2B SaaS model: recurring subscriptions to its platform, generally priced by contact and message volume and by feature tier, sold to mid-market and enterprise consumer brands. Growth comes from expansion - customers adding channels, sending more, and switching on AI features - on top of new logos. The company has reported surpassing $200M in annual recurring revenue.
Across seven rounds, Iterable raised more than $342 million. The 2019 Series D of roughly $60M was led by Viking Global; the $200M Series E in June 2021 pushed the company to a $2 billion valuation and unicorn status, backed by investors including Silver Lake, Adams Street Partners, Glynn Capital, DTCP, CRV, and Capital One Ventures.
Andrew Boni and Justin Zhu launch in San Francisco to fix the friction in building personalized campaigns.
Index Ventures leads a round to expand the cross-channel platform.
A $50M round is followed by a $60M Series D led by Viking Global for cross-channel growth tools.
A $200M Series E pushes Iterable to a $2 billion valuation.
The company ships 37 AI-powered features, including Predictive Goals and Copy Assist.
Iterable launches the Nova agentic AI suite; Sam Allen becomes CEO and founder Boni moves to Chief Scientist.
In mid-2025, Iterable made a notable leadership change. Sam Allen - a longtime Salesforce executive who served as EVP and Global Chief Pipeline Officer - joined as CEO, effective August 1, 2025, to press on enterprise growth and AI. Founder Andrew Boni, who had been CEO since 2021, stepped into the role of Chief Scientist to work full-time on the product and AI roadmap, and stayed on the board.
It is an unusual move - a founder handing off the top job to focus on the part of the company he cares about most. For Iterable, it reads as a bet that the next phase is as much a product and AI story as a sales one.
Iterable is a customer engagement platform that helps consumer brands send coordinated, personalized messages across email, SMS, push notifications, in-app, and web - built on one unified view of customer data.
It was founded in 2013 in San Francisco by Andrew Boni, formerly of Google, and Justin Zhu, formerly of Twitter.
More than $342 million across seven rounds. Its $200M Series E in June 2021 valued the company at $2 billion.
Chiefly Braze, Klaviyo, Salesforce Marketing Cloud, Adobe/Marketo, HubSpot, Customer.io, and MoEngage.
Nova is Iterable's AI intelligence suite, introduced in 2025, with agents that autonomously build, QA, and optimize marketing campaigns, plus decisioning and insights tools.
Sources: iterable.com · TechCrunch · Forbes · Crunchbase · BusinessWire · Sacra · 6sense · Tracxn. Figures including revenue and employee counts are public estimates and may be approximate.