Smallest body text is 9px (base ~14px). below the ~16px readable floor.
fix Keep body copy ≥15-16px; reserve sub-13px for fine print only.
01
Homepage / Lander
▲ strongest
6 tactics
$0.15 +4 more · subscription
saas · Aug 15, 2026
sendmux.ai
60/100 Partial
Scores above 65% of 1,252 multi-step funnels we have measured. Among the 959 saas funnels in that group, above 57%.
How this was measured
Coverage is detection coverage, not a verdict — it counts the conversion tactics we could prove are present, out of the 11 that apply to a saas funnel.
Measured by Roentgen 1.25.1, one of our versioned rulesets. A capture is read once and its measurements freeze there, so the stamp says which ruleset read this one.
Walk 40 links seen, 21 walkable, 4 matched, and we walked 4 pages.
What we recorded
Progress
2 scans
this funnel’s coverage score across measured re-scans
measuredextracted directly from the live page. a fact, not an opinion
0pts
since the first measured scan (2026-08-09) — 2 re-scans
- 60 Partial 2026-08-09
- 60 Partial 2026-08-15
The funnel, frame by frame
4 steps walkedIn their own words
36 quotedthe entry page’s own title, headline, buttons and prices — quoted, never paraphrased
measuredextracted directly from the live page. a fact, not an opinion- Page title
Sendmux - The Email API for AI Agents, with Inboxes
- Meta description
Sendmux is an email API that gives every AI agent a real inbox. Send and receive, route outbound through your own providers, and fail over automatically.
- Headline
The Email API for AI Agents
- Section headings
YOUR PRIVACY CHOICES
Email tools weren't built for AI agents
Send, receive, route, and react
Built for agents. Open to your team.
Every agent inbox, one view
Your providers. Our routing.
From zero to sending in under five minutes
Scale from one agent to thousands.
+8 more, not shown- Buttons and links
Allow analytics
Decline
Product
Solutions
Developers
Using system theme
Get started
View Docs
OpenClaw
Claude Code
+2 more, not shown- Prices on the page
$0.15
$49.00
$276.34
$0.25
$0.02
Sections
4 identified
structural bands identified on this funnel, cropped from its own capture
measuredextracted directly from the live page. a fact, not an opinion
Elements
1 harvested
the atomic pieces — price anchors, ratings, guarantees — with their verbatim on-page text
measuredextracted directly from the live page. a fact, not an opinion
What we found
5 tacticsconversion tactics we could prove are present, with the on-page text that evidences each
measuredextracted directly from the live page. a fact, not an opinionOffer clarity1 of 1
Makes the pricing ladder explicit
free, $150/mo, $250/mo
Action path3 of 4
Offers a free trial or free tier
No credit card required
Lead-capture form
checkbox, email
Offers a demo or docs entry point
View Docs
Friction reduction2 of 2
Answers buyer objections
Frequently asked questions
Offers a free trial or free tier
No credit card required
What we didn’t find
6 of 11 applicableapplicable tactics we checked for and did not see on any step we reached
measuredextracted directly from the live page. a fact, not an opinionWhat we didn’t see6 of 11 applicable
Trusted-by logo wall
1050 of 1369 measured funnels run this
Press / "as seen in"
448 of 1769 measured funnels run this
Us-vs-them comparison
304 of 1777 measured funnels run this
Proof above the fold
292 of 1777 measured funnels run this
Usage / adoption proof
224 of 1369 measured funnels run this
Scarcity / urgency copy
94 of 1769 measured funnels run this
Absence is a measurement, not a recommendation: we do not know why a tactic is missing, whether it belongs here, or whether adding it would change anything. Where a walk stopped early, a tactic living deeper would also read as not detected.
How well it’s built
15 run · 4 flaggedcontrast, mobile, typography, accessibility, weight — each with what would fix it
measuredextracted directly from the live page. a fact, not an opinionReadability & contrast1 flagged
Text contrast (WCAG AA) needs workcontrast:text-contrast-wcag-aa
93% of measurable text passes WCAG AA. 4+ runs fail.
worst: “presigned ≤ 25MB” at 1.1:1 (12px, #ffffff on #f1f5f9). needs 4.5:1
fix Raise text/background contrast to ≥4.5:1 (≥3:1 for large text), especially on CTAs and body copy.
Mobile & tap targetsclear
Mobile viewport passesmobile:mobile-viewport
Responsive viewport meta is present.
Typography1 flagged
Body text size needs worktype:body-text-size
Line length notetype:line-length
19 paragraphs run past ~95 characters per line.
fix Cap measure at ~60-75ch for comfortable reading.
Accessibility hygiene1 flagged
Language declared passesa11y:language-declared
html[lang] is set for screen readers.
Image alt text passesa11y:image-alt-text
All 9 content images carry alt text.
Named controls needs worka11y:named-controls
4 buttons/links have no accessible name (icon-only, no aria-label).
fix Add aria-label to icon-only buttons and links.
Link text notea11y:link-text
1 link uses generic text (“click here” / “learn more”).
fix Make link text describe its destination out of context.
Heading levels notea11y:heading-levels
2 headings skip a level (e.g. <h2> followed by <h4>). Screen-reader users navigate by this outline.
fix Step heading levels one at a time; use CSS for size, not a deeper level.
Skip link notea11y:skip-link
No same-page “skip to content” link was found. Keyboard users tab through the whole nav on every page.
fix Add a first-in-DOM <a href="#main"> that is visible on focus.
Weight & delivery1 flagged
Page weight not measurableweight:page-weight
At least 3.8 MB across 144 measurable resources, but 180 cross-origin resources did not expose a size. The true weight cannot be determined from the page.
Render-blocking resources noteweight:render-blocking-resources
7 stylesheets/scripts in <head> block first paint.
fix Defer non-critical JS (defer/async) and inline only critical CSS.
Oversized images needs workweight:oversized-images
10 images are shipped at more than 2x the width shown.
“logo-light.svg” is 450px wide, displayed at 111px
fix Serve responsive sizes (srcset/sizes) matching the rendered width.
Form usabilityclear
Autocomplete hints noteforms:autocomplete-hints
No autocomplete attributes across 4 fields. browsers cannot autofill.
fix Add autocomplete="email"/"tel"/"name" to identity fields.
Inline validation passesforms:inline-validation
4 fields carry validation attributes (required/pattern/aria-invalid).
Brand kit
5 colour roles
palette by on-page usage · type rendered live
measuredextracted directly from the live page. a fact, not an opinionfull palette ordered by on-page usage %
primary#0f1729
accent#0f1729
bg#ffffff
surface#eef5ff
text#475569
See the roles applied
accent
Body copy in their text role, on a surface card.
the roles, doing their job
The quick brown fox60px
Jumps over the lazy dog26px
A subheading in their voice23px
Body copy set at their measured paragraph size. This is how their product reads to a first-time visitor. same family, same scale, same weight.
- List item one, at body scale
- List item two
- List item three
Type scale, weights & families
SIZE SCALE
10pxAa
11pxAa
12pxAa
13pxAa
14pxAa
15pxAa
16pxAa
18pxAa
20pxAa
23pxAa
26pxAa
60pxAa
WEIGHTS
Aa400
Aa700
Aa900
FAMILIES
Lato
rendered in their own type system · webfont not loaded. system fallback if uninstalled
We also looked for Playbook match, and found none on this funnel.
X-ray a funnel
