Freedom251 › Email Marketing Analytics Software
Sendlens
What Sendlens is
Sendlens is a web-based email campaign intelligence platform that analyzes campaign performance beyond email service provider reporting. It captures campaign screenshots and scores more than 15 structured fields, covering areas such as content, visuals, calls to action, layout, tone, palette, and spam signals. It relates those traits to open rate, open-to-click rate, and conversion data, then orders patterns by statistical confidence. Similar campaigns can be grouped in clusters with aggregate metrics; users can rename, recolor, or assign campaigns manually. Users can upload conversion data as a CSV to create attribution funnels, with a configurable seven-day default window; attribution is a Pro feature. Sendlens also groups individual automation emails under their parent flow and provides totals and per-step breakdowns. ActiveCampaign and Brevo are live integrations; Klaviyo, Mailchimp, and Kit are listed as coming next. Campaign and flow performance can be exported as CSV. The free plan includes 10 fingerprint credits once. Essentials costs €29 a month and Pro costs €69 a month.
Who it suits
Sendlens is intended for email marketers, SME marketing managers, and freelance or agency operators who want to examine campaign patterns and performance. Pro may suit users who need conversion attribution and revenue reporting.
What it does well
- Scores campaigns across more than 15 fields.
- Groups similar campaigns with aggregated metrics.
- Exports campaign and flow data as CSV.
- Free plan includes 10 one-time fingerprint credits.
What to know first
- Free fingerprint credits are one-time, not monthly.
- Attribution is available only on Pro.
- Only ActiveCampaign and Brevo integrations are live.
- Pro costs €69 a month.
Limits
The Free plan includes ten fingerprint credits one-time. Essentials includes 50 fingerprint credits per month, while Pro includes 250 per month and lists a 90-day window for individual open and click engagement sync; conversion attribution is a Pro feature.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | 10 fingerprint credits one-time · unlimited campaign sync and clusters · no credit card required | Free |
| Essentials | Monthly · 50 fingerprint credits/month · unlimited campaign sync and clusters · CSV exports · email support | €29 a month |
| Pro | Monthly · 250 fingerprint credits/month · conversion attribution · revenue per campaign and cluster · priority support | €69 a month |
As sendlens.com lists them, read 30 Sept 2026. The maker's own page has the final word.
Getting started
- Visit https://sendlens.com/.
- Choose the Free plan or a paid plan.
- Connect ActiveCampaign or Brevo with an API key.
- Sync campaigns, metrics, content, and flows.
- Use campaign clusters or automation analysis, then export performance as CSV if needed.
Verdict
Sendlens connects campaign characteristics with engagement and conversion measures, with clustering and export options for further analysis. Its live integrations are limited to two platforms, and attribution requires Pro.
Questions
Is Sendlens free?
Yes. Its Free plan costs nothing and includes ten fingerprint credits one-time, unlimited campaign sync and clusters, with no credit card required.
What do the paid plans cost?
Essentials costs €29 a month, billed monthly. Pro costs €69 a month, billed monthly.
Which email platforms connect to Sendlens?
ActiveCampaign and Brevo are live integrations. Klaviyo, Mailchimp, and Kit are listed as coming next; Customer.io and HubSpot are named on the roadmap.
What does Pro add?
Pro includes 250 fingerprint credits per month, conversion attribution, revenue per campaign and cluster, and priority support.
Can I export campaign data?
Yes. Sendlens offers platform-neutral CSV exports for campaign and flow performance.
Where is Sendlens based?
Sendlens says it is built by a small team based in Amsterdam, the Netherlands.
Facts from Sendlens's own pages
- Audience
- Sendlens identifies email marketers, SME marketing managers, and freelance or agency operators as its intended users. · sendlens.com, 30 Sept 2026
- Automation analysis
- Sendlens groups individual flow emails into their parent automation and provides aggregated totals and per-step breakdowns. · sendlens.com, 30 Sept 2026
- Campaign groups
- Clusters group similar campaigns for comparison and include aggregated metrics; users can rename, recolor, or manually assign campaigns. · sendlens.com, 30 Sept 2026
- Company location
- Sendlens says it is built by a small team based in Amsterdam, The Netherlands. · sendlens.com, 30 Sept 2026
- Data handling
- The privacy policy says service providers include DigitalOcean and Cloudflare, that Sendlens does not sell personal data, and that users can request account-data deletion by email. · sendlens.com, 30 Sept 2026
- Email analysis
- It screenshots campaigns and scores each across more than 15 structured fields, including content, visuals, calls to action, layout, tone, palette, and spam signals. · sendlens.com, 30 Sept 2026
- Exports
- Sendlens offers platform-neutral CSV exports for campaign and flow performance that can be used with Sheets, Looker, and PowerBI. · sendlens.com, 30 Sept 2026
- Headquarters
- Amsterdam, Netherlands · sendlens.com, 28 Sept 2026
- Live integrations
- ActiveCampaign and Brevo are live integrations; Sendlens says it imports campaigns, metrics, content, and flows using an API key. · sendlens.com, 30 Sept 2026
- Pattern analysis
- Sendlens cross-references email traits with open rate, open-to-click rate, and conversion data, and ranks patterns by statistical confidence. · sendlens.com, 30 Sept 2026
- Plan limit
- The pricing comparison lists a 90-day window for individual open and click engagement sync on Pro. · sendlens.com, 30 Sept 2026
- Planned integrations
- The site lists Klaviyo, Mailchimp, and Kit as coming next and names Customer.io and HubSpot among roadmap platforms. · sendlens.com, 30 Sept 2026
- Product
- Sendlens is an email campaign intelligence platform that analyzes campaign performance beyond the reporting provided by email service providers. · sendlens.com, 30 Sept 2026
- Revenue attribution
- Users can upload conversion data as a CSV to build campaign attribution funnels; the default attribution window is seven days and configurable, and attribution is a Pro feature. · sendlens.com, 30 Sept 2026
- Security and privacy
- Sendlens says it encrypts data in transit with TLS and at rest, limits production access to a need-to-know basis, and rotates credentials regularly. · sendlens.com, 30 Sept 2026
- Support
- The site says it usually answers messages within the day; Essentials includes email support and Pro includes priority support. · sendlens.com, 30 Sept 2026
Where Sendlens stands on Freedom251
- Email Marketing Analytics Software#19 of 47