Free / Open-sourceAutonomous enterprise AI agents and CRM intelligence powered by Salesforce Data 360 and Atlas.
Free / Open-sourceAutonomous enterprise AI agents and CRM intelligence powered by Salesforce Data 360 and Atlas.
Klaviyo records 6,674,207 monthly visits with +6.1% month-over-month growth and Paid pricing. Quest (Questera) records 0 monthly visits with 0% growth and Contact for Pricing pricing.
Agentic customer engagement platform where AI teammates watch signals and act across channels
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | klaviyo.com | questlabs.ai |
| Pricing Model | Paid | Contact for Pricing |
| Monthly Visits | 6.67M (6,674,207) | 0 (0) |
| MoM Traffic Delta | +384.25K (+6.1%) | 0 (0%) |
| Primary Market & Share | 🇺🇸 United States (38.7%) | 🌐 Global (—) |
| Direct Visits / mo | 4.43M | 0 |
| User Rating | 4.6 | 4.5 |
| Supported Platforms | Website | Website |

The AI-powered B2C CRM for email, SMS, and personalized marketing at scale
Every contact, event, and channel feeds one profile so segmentation, personalization, and reporting stay consistent.
An agent that plans calendars, drafts campaigns, audits flows, and recommends next actions using your business context.
Build campaigns and automated flows across email, SMS, RCS, WhatsApp, push, and social from one interface.
Forecast lifetime value, churn risk, and expected next purchase date to target the right customers at the right time.
Agentic customer engagement platform where AI teammates watch signals and act across channels
Deploy named agents for lifecycle email (ELMA), retargeting ads (SARA), omnichannel journeys (OMNIA), segmentation (SEGA), growth engineering (GRETA) and analytics (GIA) without writing campaign logic yourself.
Create your own agent in four steps: choose an avatar, add goals and guardrail instructions, pick abilities from 75+ integrations, then test and deploy with real-time feedback.
Agents watch behavioural and product signals continuously and adapt journeys as user behaviour changes, rather than waiting for a nightly batch.
Connects to CRM, CDP, ads, email and analytics tools including Segment, Snowflake, Braze and HubSpot, activating existing data instead of replacing your warehouse.
Free / Open-sourceAutonomous enterprise AI agents and CRM intelligence powered by Salesforce Data 360 and Atlas.
Free / Open-sourceAutonomous enterprise AI agents and CRM intelligence powered by Salesforce Data 360 and Atlas.
Broader general-purpose email marketing features, but less specialized ecommerce data segmentation compared to Klaviyo.
Broader general-purpose email marketing features, but less specialized ecommerce data segmentation compared to Klaviyo.
Free / Open-sourceAll-in-one customer platform for email, SMS, CRM, and automation
Free / Open-sourceAll-in-one customer platform for email, SMS, CRM, and automation

Simpler and more affordable for basic newsletter design, but lacks advanced predictive segmentation and revenue analytics.
Simpler and more affordable for basic newsletter design, but lacks advanced predictive segmentation and revenue analytics.

Conversational AI and helpdesk built for ecommerce brands

Includes built-in landing page builders and webinars, but lacks Klaviyo's deep online store revenue attribution tracking.
Includes built-in landing page builders and webinars, but lacks Klaviyo's deep online store revenue attribution tracking.
Free / Open-sourceKnow what's actually working in your ecommerce business — and act on it instantly.
Free / Open-sourceKnow what's actually working in your ecommerce business — and act on it instantly.
AI agents that work the revenue lifecycle alongside your sellers

SpecialistEmail marketing with AI send-time optimization to lift opens
SpecialistEmail marketing with AI send-time optimization to lift opens

AI marketing agents that run your growth while you stay in control
AI marketing agents that run your growth while you stay in control

Free / Open-sourceAutonomous marketing automation powered by AI agents
Free / Open-sourceAutonomous marketing automation powered by AI agents