Catch the embarrassing stuff before it ships to your list. Runs a full pre-flight check on an email: merge tag fallbacks, broken links, spam triggers, CAN-SPAM / GDPR footers, mobile rendering, size limits, accessibility.
Requires: Cogny MCP for campaign-ID mode. Paste-HTML mode works without MCP (but without send-context checks).
Usage
/pre-send-qa <campaign-or-draft-id> — QA a specific campaign (or draft, for Get a Newsletter) in your ESP
/pre-send-qa — then paste the email HTML/MJML/text when prompted
Steps
1. Load the email
Mode A — Campaign ID (MCP). Detect which ESP is connected (check both namespaces: mcp__cogny__<svc>__* and mcp__<svc>__*) and use the right tool:
ESP
Fetch tool
What the ID refers to
Klaviyo
get_campaign
Campaign object
Mailchimp
tool_get_campaign
Campaign object
Rule
tool_get_campaign
Campaign object
Get a Newsletter — pre-send
tool_get_draft
A draft that hasn't been sent yet
Get a Newsletter — post-send forensics
tool_get_sent + tool_get_report
A sent item
For every ESP extract: subject, preheader, from name, from email, reply-to, HTML body, text body, target segment/list, scheduled send time. Also fetch the associated list/audience size so Section 2.8 has recipient count.
Get a Newsletter has no single "campaign" object. If the user passes an ID, try tool_get_draft first (pre-send QA is the common use), fall back to tool_get_sent if that 404s. If they want to QA a scheduled send, use tool_list_scheduled to find it.
Mode B — Paste:
Ask for subject line, preheader, from name/email, and body HTML. Accept multi-line paste.
Section 2.8 (send context) is skipped in paste mode — no recipient count, no segment, no schedule.
2. Run the checklist
Walk through every category. For each item, mark [PASS], [WARN], or [FAIL] and include the specific offending content.
All merge tags well-formed — balanced brackets, closed blocks
All merge tags have fallbacks — e.g., {{ first_name|default:"there" }} (Klaviyo), *|IFNOT:FNAME|*there*|ELSE:*|FNAME|**|END:IF|* (Mailchimp). Flag any token without a fallback as FAIL.
"Hi ," or "Hello ," anti-pattern — substring search for bare punctuation after a greeting. This is the #1 embarrassing merge-tag failure.
Dynamic content blocks closed — open {% if %} must have {% endif %}; same for loops
No raw tokens in subject line — e.g., subject reading literally "Hi {{ first_name }}"
2.3 Links
Extract all <a href="..."> from the HTML. For each:
URL is absolute — no href="/path" without domain; no href="#" unless intentional anchor
URL resolves — HEAD-check each unique URL (cap at 30 requests, dedupe). Flag non-200s.
No localhost / 127.0.0.1 / .local — dev leak
No staging/dev domains — flag *.staging.*, *.dev.*, stage., preprod.
UTM parameters present on all outbound links — warn on links missing utm_source/utm_medium/utm_campaign
UTM consistency — all links should share utm_campaign; flag divergence
Link count — report total. Warn if >20 (clutter). Warn if <1 (no CTA).
CTA destination consistency — multiple buttons labeled "Shop now" should generally point to the same URL
2.4 Images
All <img> have alt text — non-empty, descriptive
No pure-image email — flag if text-to-image ratio is <40% text. Hero-image-only emails trigger spam filters.
Image URLs are absolute + HTTPS
Image URLs aren't hotlinked from sketchy hosts — flag if images are on imgur, cloudinary demo, etc. instead of a brand CDN
2.5 Compliance
Unsubscribe link present — regex for unsubscribe, preferences, opt out
Unsubscribe link is visible — not display:none or font-size:1px
Physical postal address in footer — CAN-SPAM requirement. Regex for a street/city pattern or flag if missing.
List-Unsubscribe header — flag if ESP allows setting it but it's not configured (one-click unsubscribe is required by Gmail/Yahoo for bulk senders)
Preference center link — nice-to-have; warn if only unsubscribe exists
2.6 Spam triggers
Scan subject + preheader + body for classic triggers and report offenders:
Word-level: free, winner, congratulations, guaranteed, risk-free, act now, click here, limited time, no obligation, viagra (lol), make money, earn extra, $$$
Punctuation: more than one ! in subject, !!!, ???
Casing: ALL CAPS WORDS longer than 3 chars in subject
Symbols:$$$, ★, excessive emoji (>3)
HTML: hidden text (color matches background), tiny font, embedded JavaScript, background images on <body>
Output each offender with context:
🔴 Subject contains "!!!"
🟡 Body has 4 instances of ALL CAPS words: "LIMITED", "TODAY", "ACT NOW", "DON'T"
2.7 Rendering & size
HTML size < 102 KB — Gmail clips at 102 KB. Report actual size.
Single root <table> layout (desktop email standard) OR uses MJML — flag flex/grid as a deliverability risk
Inline CSS — style attributes vs <style> blocks. Many clients strip <head> styles.
Mobile viewport meta — <meta name="viewport" content="width=device-width">
Font stack has fallbacks — no font-family: "Custom Font"; without a web-safe fallback
No <script>, no <form>, no external fonts loaded via JS — all stripped by most clients
2.8 Send context (MCP mode only)
Target segment is populated — recipient count > 0
Audience isn't the entire list for a promotional send — flag "All Subscribers" when there's a segmented alternative
Scheduled time isn't 3am recipient-local — flag weird send hours
Not a duplicate send — check last 30 days for a campaign with the same subject going to the same segment
3. Report
Pre-send QA: <campaign name | "pasted email">
Recipient count: <N> Send ETA: <time or "not scheduled">
Overall: <READY TO SEND | FIX BEFORE SEND | CRITICAL ISSUES>
🔴 Critical (will break or embarrass)
— <specific issue with offending text / URL / line>
— ...
🟡 Warnings (fix if you have time)
— ...
🟢 Passed
— <count> checks passed
──
Recommended fix order:
1. ...
2. ...
Merge-tag fallback cheatsheet for <ESP>:
[ESP-specific syntax examples]
4. Finding (optional)
If critical issues are found and the campaign is scheduled to send soon, create a finding:
{"title":"Campaign '<name>' has critical QA issues — blocked send","body":"<enumerated issues>","action_type":"pre_send_fix","priority":"high"}
5. Do not auto-fix
Never modify the campaign automatically. Always present the diff and let the user approve each fix.
Notes
ESP-specific merge tag syntax:
Klaviyo:{{ first_name|default:"there" }}
Mailchimp:*|FNAME|* with *|IFNOT:FNAME|*there*|ELSE:*|FNAME|**|END:IF|*
Rule / Get a Newsletter:[Firstname] with platform-specific fallback syntax
Spam-trigger lists are heuristics; modern spam filters use ML + reputation. Treat warnings as "raise eyebrow, check reputation" not "instant spam".