Standalone AEIP vs
Litmus-Bundled AI Layer
Engagor is a standalone Agentic Email Intelligence Platform that works with any ESP or MTA. Validity Engage bundles Litmus, Everest, and MailCharts with an AI layer for existing Litmus customers. This page compares both approaches.
What is Engagor?
Engagor is an Agentic Email Intelligence Platform (AEIP) that provides autonomous email deliverability monitoring. Engagor connects to cloud ESPs (Klaviyo, Brevo, Amazon SES) and on-premise MTAs (PowerMTA, GreenArrow, Halon), parses raw SMTP logs, and uses AI to detect anomalies and perform root cause analysis without manual configuration. Engagor includes a natural language query interface called AI Studio and works with any email infrastructure without prerequisites.
What is Validity Engage?
Validity Engage is an AI layer built on top of existing Validity products, available exclusively to Litmus customers with the Deliverability and Email Guardian upgrades. Validity Engage presents four AI agents: Ignite (pre-send safety checks via Litmus), Guardian (inbox placement monitoring via Everest), Expression (AI-generated email copy), and Insight (competitive intelligence via MailCharts). Validity Engage uses data from Validity's sender network of approximately 2.5 billion mailboxes rather than monitoring your actual sends.
What is the difference between Engagor and Validity Engage?
- Engagor is a standalone SaaS product with no prerequisites, while Validity Engage requires an existing Litmus subscription with paid upgrades.
- Engagor works with any ESP or MTA, while Validity Engage is available only within the Litmus ecosystem.
- Engagor monitors your actual sends by connecting to your ESPs and parsing raw SMTP logs, while Validity Engage uses Validity's sender network data to estimate inbox placement.
- Engagor supports on-premise MTAs (PowerMTA, GreenArrow, Halon) and raw SMTP log parsing, while Validity Engage does not.
- Engagor provides autonomous AI anomaly detection and root cause analysis, while Validity Engage bundles existing Validity tools (Litmus, Everest, MailCharts) with an AI interface layer.
- Engagor includes natural language querying through AI Studio, while Validity Engage provides pre-send testing, AI copy generation, and competitive intelligence features that Engagor does not offer.
Feature comparison
A factual, side-by-side comparison of platform capabilities.
| Category | Validity Engage | Engagor |
|---|---|---|
| Architecture | AI layer on bundled Validity products (Litmus, Everest, MailCharts) | Standalone SaaS with autonomous AI |
| Data source | Validity's sender network (~2.5B mailboxes) | Your actual ESP data + raw SMTP logs |
| Dependencies | Requires Litmus + Deliverability + Email Guardian upgrades | None (standalone) |
| ESP/MTA compatibility | Works within Litmus ecosystem | Any ESP (Klaviyo, Brevo, Amazon SES) or MTA |
| On-prem MTA support | Not available | PowerMTA, GreenArrow, Halon with raw SMTP log parsing |
| Detection method | Not publicly documented | AI anomaly detection (establishes baselines automatically) |
| Root cause analysis | Recommendations (details not publicly documented) | Automated, AI-powered with specific diagnosis |
| Query interface | Litmus-integrated dashboard | Natural language (AI Studio) + dashboard |
| Primary use case | Pre-send testing + inbox placement + competitive intelligence | Post-send autonomous monitoring + root cause analysis |
| Target audience | Marketing teams already using Litmus | CRM teams and deliverability practitioners using any ESP |
This is where Engagor really proves its value for modern CRM teams.
When Validity Engage may be a better fit
- You are already a Litmus customer with the Deliverability and Email Guardian upgrades
- You need pre-send email testing with rendering checks across email clients
- You need competitive intelligence on what other brands are sending (MailCharts data)
- Your primary buyer is a marketing team that values the Litmus workflow
- Inbox placement estimates from Validity's sender network are sufficient for your monitoring needs
Frequently asked questions
What is the difference between Engagor and Validity Engage?
Engagor is a standalone Agentic Email Intelligence Platform (AEIP) that provides autonomous deliverability monitoring for any ESP or MTA. Validity Engage is an AI layer built on top of existing Validity products — Litmus for pre-send testing, Everest for inbox placement monitoring, and MailCharts for competitive intelligence. Engagor monitors your actual ESP data and raw SMTP logs, while Validity Engage uses data from Validity's sender network of 2.5 billion mailboxes. Engagor requires no prerequisites, while Validity Engage requires an existing Litmus subscription with Deliverability and Email Guardian upgrades.
What are Validity Engage's four agents?
Validity Engage includes four AI agents: Ignite (pre-send safety checks using Litmus email testing), Guardian (ongoing deliverability monitoring using Everest inbox placement data), Expression (AI-generated email copy including subject lines and CTAs), and Insight (competitive intelligence using MailCharts data). Each agent is built on an existing Validity product with an AI interface layer. Engagor takes a different approach with a unified AI that performs autonomous anomaly detection and root cause analysis on your actual sending data.
Is Validity Engage a standalone product?
No. Validity Engage is only available to Litmus users who have purchased the Deliverability and Email Guardian upgrades. It is not available as a separate product and cannot be used without an existing Litmus subscription. Engagor is a standalone SaaS platform that works with any ESP or MTA without prerequisite subscriptions.
Can I use Validity Engage without Litmus?
No. Validity Engage requires a Litmus subscription with the Deliverability and Email Guardian upgrades activated. Teams that do not use Litmus cannot access Validity Engage. Engagor works with any email infrastructure — cloud ESPs, on-premise MTAs, or hybrid setups — without vendor dependencies.
Is Engagor a Validity Engage alternative?
Yes. Engagor serves as a Validity Engage alternative for teams that need ESP-agnostic deliverability intelligence without vendor lock-in. While Validity Engage focuses on pre-send testing and inbox placement for Litmus customers, Engagor provides post-send autonomous monitoring with AI-powered root cause analysis. Engagor also supports on-premise MTAs (PowerMTA, GreenArrow, Halon) and raw SMTP log parsing, which Validity Engage does not offer.
Does Engagor support on-premise MTAs?
Yes. Engagor supports on-premise MTAs including PowerMTA, GreenArrow, and Halon, as well as cloud ESPs like Klaviyo, Brevo, and Amazon SES. Engagor parses raw SMTP logs covering bounces, deferrals, opens, clicks, unsubscribes, and complaints. Validity Engage does not support on-premise MTAs or raw SMTP log parsing.
How does Engagor's data differ from Validity Engage's data?
Engagor monitors your actual email sends by connecting directly to your ESPs and parsing raw SMTP logs from your MTAs. Validity Engage uses data from Validity's sender network of approximately 2.5 billion mailboxes to estimate inbox placement rates. Engagor's approach provides data specific to your sending infrastructure, while Validity's network-based approach provides broader market estimates. Teams that need precise monitoring of their own deliverability may prefer Engagor's direct data approach.
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