Compliance and trust require a visible unsubscribe path (and often List-Unsubscribe headers).
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Email Unsubscribe Checker
Campaign workspace
Email Unsubscribe Checker
Structured inputs and readable results — copy URLs, scan limits, and review findings without digging through JSON.
Paste rendered email HTML (or plain text with URLs).
Results
WaitingResults appear here
Fill the form and run the tool — outputs are structured cards, not a raw JSON dump.
Free · API · MCPToolYour platform
Use Email Unsubscribe Checker three ways
The free Email Unsubscribe Checker on this page works in your browser. The same workflow is available via REST API for apps and via MCP for Cursor, Claude, and other agents — one API key, one plan, one quota. This tool is part of the marketing-apis module under Marketing Tools.
- Free in browserUse Email Unsubscribe Checker here — no account required.
- REST APICall from your server with
X-Api-Key. - MCP for agentsConnect Cursor or Claude to ToolYour MCP with the same key.
- 1. Get an API keySign in and open Dashboard → API Keys (works for REST and MCP).
- 2. Call or connectUse the REST API from your server, or paste the MCP URL into your agent config.
- 3. Same qualityOutput matches the free web tool across all three surfaces.
What is Email Unsubscribe Checker?
Compliance and trust require a visible unsubscribe path (and often List-Unsubscribe headers). ToolYour Email Unsubscribe Checker scans HTML/text for unsubscribe/opt-out language and optional header strings, reporting whether a path looks present. It is not legal advice and does not send List-Unsubscribe POST proofs. Same route via REST and MCP (POST /api/v1/marketing-apis/email-unsubscribe-checker).
What are common questions about Email Unsubscribe Checker?
What does “compliantLikely” mean?
A heuristic: visible unsubscribe link and/or List-Unsubscribe hint found. Confirm with counsel and your ESP’s one-click settings.
Can I paste headers too?
Yes — pass headers or listUnsubscribe text alongside HTML for header-style cues.
Is this a substitute for CAN-SPAM or GDPR legal review?
No. This is a heuristic content scan, not legal advice. Confirm actual compliance requirements with counsel familiar with your sending jurisdictions.
What are the key features of Email Unsubscribe Checker?
Visible link + header cues
Flags mailto/http unsubscribe links and List-Unsubscribe hints.
How do you use Email Unsubscribe Checker?
Paste HTML and/or headers
Use the final rendered email markup.
Fix missing paths
Add footer link and ESP List-Unsubscribe before send.
Why this tool exists
A visible unsubscribe path (and increasingly, a List-Unsubscribe header) is table stakes for compliance and inbox provider trust, but it's easy to accidentally ship a template redesign that drops the footer link or breaks the header. Email Unsubscribe Checker exists as a fast pre-send scan for that specific failure.
Problems it solves
Template redesigns, ESP migrations, and copy edits can silently remove or break an unsubscribe link without anyone noticing until a compliance complaint or a spike in spam reports. A quick scan catches the gap before send instead of after.
Common use cases
- Agency template QA: checking every new client template for a working unsubscribe path before it goes into rotation.
- In-house compliance check: a standing pre-send step for marketing emails, especially after a template or ESP change.
- Pre-launch: verifying a redesigned footer still carries unsubscribe language and header hints.
- Agent/MCP: an agent flagging a draft email that's missing unsubscribe cues before it reaches a human for final approval.
Honest scope
This is a heuristic scan for visible unsubscribe/opt-out language and List-Unsubscribe header hints — it is not legal advice, does not verify your ESP's one-click unsubscribe actually works end-to-end, and does not send a real List-Unsubscribe POST to test compliance. Confirm with counsel and your ESP's settings.
Where do you browse more marketing tools tools?
- Marketing Tools tools
Browse the full Marketing Tools category on ToolYour.
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