Email marketing analytics
your ESP forgot to build.
ESPs focus on creation and sending. Sendlens surfaces the patterns behind every open, click, and conversion — so you can stop guessing and confidently improve every campaign.
- Avg / week
- 3.9
- Busiest day
- Tuesday
- Peak
- Mar 12
Sending between 10–11 AM on Thursdays improves conversion by +15%.
One call-to-action in the top element improves click rate by +20%.
An informal tone of voice results in more clicks, averaging +10%.
The marketing and content teams behind ecommerce brands, creative agencies, and media companies already run on Sendlens.
From scattered sends to patterns you can act on.
Connect every ESP, fingerprint every email, cluster apples-to-apples, attribute revenue, and surface the patterns that actually move the needle.
Link your existing marketing platform with ease.
Connect with ActiveCampaign or Brevo in a few clicks (Klaviyo soon) — Sendlens pulls in your campaigns, metrics, content, and flows automatically.
Fingerprint every full email, not just the subject line.
Sendlens reads each campaign like a marketer would — content, visuals, CTAs, tone, density, palette — to surface the patterns that work and the ones that don't.
Compare apples to apples with clusters.
Auto-linked groups by content and structure — your newsletter, onboarding flow, the yearly Black Friday campaigns, your win-back sequence. Compare what should be compared.
See the full picture, all the way to revenue.
Upload conversions and Sendlens builds the funnel — sent → opened → clicked → converted — for every campaign and every cluster. Click-based attribution with a configurable window.
- Drop-off at every funnel stage
- Revenue split between openers and clickers
- Per campaign or per cluster, on demand
What actually moves opens, clicks, revenue.
Sendlens cross-references every fingerprint trait with your real performance data across three dimensions — open rate, CTOR, conversion — and ranks the patterns by statistical confidence.
Clean CSVs in one click.
Platform-neutral schemas for campaign and flow performance — drop straight into Sheets, Looker, or PowerBI.
Every step in an automation, measured and analyzed on its own or as one.
Sendlens breaks each flow into its individual steps — every email, every wait, every branch. Per-step opens, clicks, and conversions, with revenue attributed to the exact step that earned it.
- Open, click, and conversion rates per step
- Revenue attributed to the step that converted
- Compare branches side by side, no exports
Built for marketers who want today’s campaign to outperform yesterday’s.
One connector for every ESP
Add API keys, hit sync. Campaigns, metrics, content, and flows land in one normalized schema — same shape across every platform.
Clusters, your way
Group campaigns into Newsletter, Onboarding, Promotions — whatever fits your operation. Color-coded, pinned, with their own aggregated metrics.
Automation flows, finally readable
Individual flow emails are bundled into their parent sequence with aggregated totals and per-step breakdowns. Evaluate the journey, not 14 stranded sends.
Fingerprint every email
Every campaign gets screenshotted, stored, and scored across 15+ structured fields — content, visuals, hero images, CTAs, layout, tone, density, palette, spam signals.
Patterns across three metrics
Cross-references every fingerprint trait with your real performance — open rate, open-to-click, conversion. Confidence-scored. No spreadsheets.
Conversion attribution
Upload your conversions. Sendlens builds the funnel — sent → opened → clicked → converted — and breaks revenue out per campaign.
Trends across every metric
Open, click, click-to-open, conversion — plotted week by week against campaign volume. Filter by cluster to see exactly when performance turned.
Clean CSV exports
Platform-neutral schemas for campaign and flow performance — drop straight into Sheets, Looker, PowerBI.
Always current
Background syncs run daily or weekly — or hit refresh anytime. New campaigns pulled, metrics updated, fingerprint and pattern analysis re-run. Open the dashboard, see today's truth.
Connect your ESP in under two minutes.
Connect with an API key in under two minutes. Sendlens backfills your full history on first sync, then keeps it fresh.
ActiveCampaign
Campaigns, automations, contacts, lists, and full per-step flow metrics.
Brevo
Email + automation campaigns, transactional sends, contacts, and templates.
Pricing that scales with your marketing.
Pick the plan that fits your marketing strategy. Essentials for general campaign performance analytics. Pro when you need conversion attribution or send at higher volume.
For marketers who want regular fingerprinting and pattern discovery.
Choose EssentialsFor agencies and operators who need attribution and high-volume libraries.
Choose ProAll plans include unlimited sync and clusters. One fingerprint credit covers one email.
| Feature | Free | Essentials | ProPopular |
|---|---|---|---|
| Monthly credits | 10 (one-time) | 50/mo | 250/moSpent on manual actions — scheduled runs are fully covered |
| Campaign sync (manual) | |||
| Scheduled sync (daily/weekly) | |||
| Sync queue priority | Low | Medium | High |
| Screenshot storage | |||
| Fingerprinting | 1 credit/campaign | 1 credit/campaign | 1 credit/campaign |
| Auto-fingerprint on scheduled sync | No credits | ||
| Pattern analysis | |||
| Timeline | |||
| CSV exports | |||
| Engagement sync (individual opens/clicks) | 90-day window | ||
| Attribution & conversions | |||
| Auto-suggested clusters | 5 credits | ||
| Auto-attached clusters | 3 credits | ||
| Auto-clustering on scheduled sync | |||
| Audit log / activity feed | |||
| Job dashboard | |||
| Integrations | Unlimited | Unlimited | Unlimited |
The questions
we keep getting.
Still curious? Drop us a line — we read every message and usually answer within the day.
The latest
through our lens.
Your emails already
hold the answers.
Connect an ESP. Let Sendlens do the rest. See the design patterns behind your best campaigns in under 10 minutes.