SendLint autonomously checks your email against the source deck, accessibility standards, links, rendering, spam triggers, and brand voice — in one pass.
Get StartedStop juggling 5 tools. SendLint runs copy alignment, accessibility, links, rendering, spam, and brand voice in a single autonomous pass.
Upload your source deck alongside the email. AI cross-references key messages, CTAs, stats, and claims — flagging anything that drifted.
Automated scan for contrast ratios, alt text, heading hierarchy, font sizes, table roles, and screen reader compatibility.
Every URL crawled and verified. Broken links, redirect chains, UTM consistency, and unsubscribe compliance — all checked.
AI-powered rendering comparison across 90+ email clients. Automatically flags visual inconsistencies in Gmail, Outlook, Apple Mail, and more.
Content-based spam scoring, image-to-text ratio analysis, blocklist checks, and authentication readiness.
Configure your brand profile with tone, terminology, and style rules. Every email scored against your voice — automatically.
Paste your email HTML and upload the source deck. Select your client and campaign version.
SendLint runs 100+ checks autonomously — copy, accessibility, links, brand rules, and more.
Review flagged issues with actionable guidance. Export the report as .docx and send with confidence.
| Feature | SendLint | Litmus | Email on Acid |
|---|---|---|---|
| Copy vs Deck Alignment | |||
| Brand Voice AI | |||
| Accessibility Checks | |||
| Link Validation | |||
| Visual Rendering Analysis | |||
| Spam Scoring | |||
| All-in-One Pass | |||
| .docx Report Export |
One plan with everything you need. Enterprise options for teams that need more.
For teams shipping production emails
Billed annually at $1,548/yr
For teams with advanced needs
Tailored to your organization
Built by QA engineers who were tired of checking emails by hand.
Every check in SendLint exists because we've seen it cause a real issue in production.
Start linting your emails with autonomous, all-in-one QA.
Get Started