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INSPECT

Catch rendering issues before your customers do.

Five stages of analysis before every send — from HTML validation to cross-client visual diff. Catch what code review misses and what preview mode can't show you.

Try Inspect freeRead the Inspect docs

Five stages. Zero broken emails.

Inspect runs automatically when you activate a flow or send a campaign. Each stage catches a different class of problem — from structural HTML errors to visual rendering differences that only appear in specific email clients.

1

Static Analysis

Quick Check

HTML structure, CSS compatibility, accessibility, dark-mode support, subject line, UTM parameters, spam keywords, and email size.

2

External Resources

Quick Check

Every link checked for 404s and redirects. Every image verified for loading, dimensions, and CDN performance.

3

Spam Scoring

Quick Check

Internal heuristics, SpamAssassin integration, and mail-tester scoring. Flags content that triggers inbox filters before you send.

4

Vendor Rendering

Full Inspect

Multi-client screenshots showing exactly how your email renders in Gmail, Outlook, Apple Mail, and more.

5

Visual Diff

Full Inspect

Cross-client deviation detection. Spots layout shifts, dark-mode breakage, and rendering differences that humans miss.

What Inspect catches.

110+ finding codes

Ten categories — HTML, CSS, images, links, spam, accessibility, rendering, dark mode, subject, tracking. Three severity levels: critical, warning, info.

Pre-send blocking

Critical findings block the send automatically. Override requires a typed reason, generates an audit log entry, and expires in five minutes.

Auto-fix transformers

Eight dark-mode fixers apply corrections automatically — missing meta tags, missing CSS color-scheme, hardcoded backgrounds and text colors, logo images without dark-mode swap.

Inspect history

Every run is stored with its findings. Delta tracking shows whether findings increased or decreased compared to the previous run for the same template.

Finding management

Mark findings as fixed, snoozed, or false positive. Snoozed findings stay quiet for a configurable period, then resurface automatically.

Cached re-runs

If the email body hasn’t changed since the last run, Inspect returns cached results at zero cost. Matching is by content hash.

Quick Check or Full Inspect.

Two modes. Choose the depth you need.

Quick CheckFree on every plan

Stages 1 through 3 — static analysis, external resources, and spam scoring. Completes in under ten seconds.

  • HTML, CSS, and accessibility checks
  • Link and image verification
  • Spam scoring with SpamAssassin
Full InspectFree, unlimited

All five stages including vendor rendering and visual diff. No credits, no per-run cost, on every plan.

  • Everything in Quick Check
  • Multi-client rendering screenshots
  • Cross-client visual diff detection

Built into the send path.

Inspect integrates directly into the send path. When you activate a flow or send a campaign, Inspect runs automatically — critical findings block the send until resolved or overridden. The same templates your team authors in the Smart Suggester are the templates Inspect analyzes.

Explore campaigns

Ship every email with confidence.

Free tier — Quick Check on every plan, full inspects included. No credit card required.

Try Inspect freeRead the Inspect docs