Body text size
type:Smallest sampled text is 9px, below the 13px floor this check uses.
FixKeep body copy ≥15-16px; reserve sub-13px for fine print only.
01
Homepage / Lander
▲ strongest
6 tactics
$49.00 +7 more
saas · Oct 1, 2026
sendmux.ai
We found more conversion tactics here than on 67% of the 1,350 multi-step SaaS funnels we have measured.
6 conversion tactics detected
4 pages walked · measured by Roentgen 1.28.1
How this was measured
Measured by Roentgen 1.28.1 on 2026-10-01. A capture is read once and its measurements freeze there, so the stamp says which ruleset read this one.
This 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. A low count means we did not detect those patterns, not that the funnel is weak.
Against all 1,781 multi-step funnels, more conversion tactics than 72% of them.
Walk 37 links on the entry page, 21 walkable. 4 matched a funnel step; we captured 4 pages in all, this one included.
The short version, in 5 parts
-
Proven on the page
6 conversion tactics detected, each backed by text on the page
- Compares itself against alternatives
comparison grid: 24 rows
- Answers buyer objections
Frequently asked questions
- Offers a free trial or free tier
Free is $0
+ 3 more with evidence
-
Not seen
5 of 11 applicable tactics we checked for and did not see
- Trusted-by logo wall
- Customer/company logos or a "trusted by / used by" claim.
- Press / "as seen in"
- Media logos or an "as seen in / featured in" claim borrowing publication credib…
- Proof above the fold
- Social proof rendered within the first viewport on at least one step.
+ 2 more
-
Flagged
5 of 17 build checks flagged, each with a fix
- Text contrast (WCAG AA)
- 94% of measurable text passes WCAG AA. 4+ runs fail.
- Body text size
- Smallest sampled text is 9px, below the 13px floor this check uses.
- Named controls
- 4 buttons/links have no accessible name (icon-only, no aria-label).
+ 2 more
-
Walked
4 pages walked, Homepage / Lander to Solutions
- Step 1
- Homepage / Lander
- Step 2
- Pricing
- Step 3
- Product
+ 1 more step
-
In their words
The headline:
Email, calendar, and files ONE API
- Promise
Sendmux is an email API that gives every AI agent a real inbox. Send and receive, route outbound through your…
- Prices shown
- $49.00 · $276.34 · $0.50
What we recorded
Progress
3 scans
this funnel’s coverage score across measured re-scans
measuredextracted directly from the live page. a fact, not an opinion
1 more tactic detected
5 → 6 across 3 scans since 2026-08-09. The ruleset changed in this window, so part of this may be our detection improving rather than the page changing.
- 5 tactics 2026-08-09
- 5 tactics 2026-08-15
- 6 tactics 2026-10-01
The funnel, frame by frame
4 steps walkedsee their whole funnel without clicking through it. scored step by step
measuredextracted directly from the live page. a fact, not an opinionIn their own words
39 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
Email, calendar, and files ONE API
- 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
[^_^] BUILT FOR AI AGENTS COPY PROMPT FOR AGENTS
OpenClaw
Claude Code
CLI
+2 more, not shown- Prices on the page
$49.00
$276.34
$0.50
$7
$0
$0.000500
$0.000750
$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
6 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 opinionobjection2 of 2
Compares itself against alternatives
comparison grid: 24 rows
Answers buyer objections
Frequently asked questions
offer2 of 2
Offers a free trial or free tier
Free is $0
Makes the pricing ladder explicit
free, $507/mo, $757/mo
checkout2 of 2
Offers a demo or docs entry point
View docs
Lead-capture form
checkbox, email
What we didn’t find
5 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 see5 of 11 applicable
Trusted-by logo wall
1,484 of the 2,043 funnels we checked
Press / "as seen in"
642 of the 2,417 funnels we checked
Proof above the fold
381 of the 2,420 funnels we checked
Usage / adoption proof
289 of the 2,043 funnels we checked
Scarcity / urgency copy
125 of the 2,417 funnels we checked
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
17 run · 5 flaggedcontrast, mobile, typography, accessibility, weight — each with what would fix it
measuredextracted directly from the live page. a fact, not an opinion5 of 16 measured checks need work1 could not be measured — not counted either way
Text contrast (WCAG AA)
contrast:94% of measurable text passes WCAG AA. 4+ runs fail.
worst: “presigned ≤ 25MB” at 1.1:1 (12px, #ffffff on #f1f5f9). needs 4.5:1
FixRaise text/background contrast to ≥4.5:1 (≥3:1 for large text), especially on CTAs and body copy.
Named controls
a11y:4 buttons/links have no accessible name (icon-only, no aria-label).
FixAdd aria-label to icon-only buttons and links.
Oversized images
weight:11 images are shipped at more than 2x the width shown.
“emblem.svg” is 1024px wide, displayed at 30px
FixServe responsive sizes (srcset/sizes) matching the rendered width.
Tap-target size (mobile)
mobile:249 of 325 interactive targets are under 44×44px on mobile.
smallest: “Dismiss and decline analytics” at 24×24px
FixGive tappable controls a ≥44×44px hit area. the touch minimum.
Worth knowing7
Line length
18 paragraphs run past ~95 characters per line.
FixCap measure at ~60-75ch for comfortable reading.
type:Link text
1 link uses generic text (“click here” / “learn more”).
FixMake link text describe its destination out of context.
a11y:Heading levels
2 headings skip a level (e.g. <h2> followed by <h4>). Screen-reader users navigate by this outline.
FixStep heading levels one at a time; use CSS for size, not a deeper level.
a11y:Skip link
No same-page “skip to content” link was found. Keyboard users tab through the whole nav on every page.
FixAdd a first-in-DOM <a href="#main"> that is visible on focus.
a11y:Label in name
1 control has an aria-label that does not contain its visible text, so voice-control users cannot activate it by saying what they see.
FixMake the accessible name start with the visible label text.
a11y:Render-blocking resources
6 stylesheets/scripts in <head> block first paint.
FixDefer non-critical JS (defer/async) and inline only critical CSS.
weight:Autocomplete hints
No autocomplete attributes across 4 fields. browsers cannot autofill.
FixAdd autocomplete="email"/"tel"/"name" to identity fields.
forms:Not measurable1
Page weight
At least 2.2 MB across 163 measurable resources, but 183 cross-origin resources did not expose a size. The true weight cannot be determined from the page.
weight:Clear4
Mobile viewport · Language declared · Image alt text · Inline validation
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 %
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
Measured, found none
1 of 10 layerslayers we ran on this funnel that came back empty
measuredextracted directly from the live page. a fact, not an opinionPlaybook match — which funnel play this page runs — measured, evidence-quoted
We ran this pass on the pages we captured and found nothing to show. That is a measurement of this funnel, not a recommendation — and it is a different statement from a layer we never ran, which does not appear here at all.
