JustAI – Agentic Marketing Platform for Self-Optimising Lifecycle Journeys

Description

JustAI is an AI-native marketing platform that helps lifecycle teams automate personalisation, experimentation and decisioning. Instead of rigid workflows and rules-based segments, four coordinated agents work out the next best message for each customer, generate it for email and in-app channels, and keep learning from results, while marketers set the guardrails.

San Francisco-based JustAI raised a $17M Series A in June 2026, led by Base10 Partners with Y Combinator and Peak XV Partners, plus operators from Anthropic, Chime and Notion and the CTO of HubSpot. Founder and CEO Neha Mittal previously led growth and retention work at Twitter and Pinterest, and co-founded the company with Jeff Hara. JustAI says its annual recurring revenue grew five-fold this year.

Who JustAI Is For

JustAI is aimed at consumer companies with large user bases and established lifecycle programmes:

• Lifecycle and CRM teams at subscription, fintech and education companies.
• Growth teams under pressure to show measurable lift without more headcount.
• Enterprise marketers replacing manual segmentation with AI decisioning.
• Product marketers running email and in-app journeys.

Core Capabilities

Four Coordinated Agents

The Strategy agent audits users, segments and product surfaces. The Creative agent turns insights into brand-led messaging. The Decisioning agent optimises for engagement, retention and revenue within the limits you set, and the Data agent measures lift and feeds learning back into the system.

Journeys That Optimise Themselves

Marketers choose the messages; JustAI tests the combinations, finds the right sequence and lets each customer take their own path. As one customer put it, no human can pre-write a rule for every customer state.

Customer Context in One Place

JustAI connects what each customer does with what they see next. Activity, interests and preferences stay attached to the person across every journey.

Humans Stay in Control

JustAI is designed so marketers remain the decision-makers. Teams choose the messages and set the goals and limits for each journey, and the agents work inside those boundaries. Every decision is visible, so lifecycle managers can see why a customer received a particular message and adjust the guardrails if results drift.

Ask Justine

Justine answers questions about a cohort, campaign or outcome, and builds a dashboard around your question with lift measured against a holdout group, so teams can see what is really driving growth.

Key Features Summary

• Strategy, Creative, Decisioning and Data agents
• Next-best-message decisioning per user
• Email and in-app messaging
• Self-optimising journeys and experimentation
• Unified customer context
• Justine assistant with holdout-based lift reports
• Marketer-defined guardrails and visibility

Plans & Pricing

JustAI does not publish pricing. It sells to enterprise marketing teams through demos.

Pricing checked on getjust.ai on 29 October 2026; no public price list was available. Book a demo through the official website for a quote.

Pros & Cons

Pros

• Strong, measurable case studies, such as a 27% lift in subscriptions at Coursera.
• Holdout-based measurement shows true incremental impact.
• Well funded, with an experienced founding team.

Cons

• No public pricing or self-serve option.
• Built for larger consumer companies.
• Works on top of existing data, so set-up depends on your stack.
• Results depend on having enough traffic to run meaningful holdout tests.

Where JustAI Fits

JustAI is an enterprise lifecycle agent. Online shops wanting fully autonomous retention email can compare Avys by Birdsview, and developer-led teams may prefer Audryo. For outbound and cold email, see our guide to the best AI email deliverability and outreach tools.

Browse the email marketing agents category in our AI agents directory.

FAQs

What do JustAI’s agents do?

They audit users and segments, write messaging, decide which message each person gets and measure lift, all within marketer-set guardrails.

Which customers use JustAI?

Published examples include Coursera, Better Mortgage and Acorns. Better Mortgage raised its application-start rate from 9.25% to 12.08% in a test, a 30% increase, and Coursera saw a 27% lift in subscription rate in its churn series.

How much does JustAI cost?

JustAI does not publish pricing. Book a demo for a quote.