Most internal comms tools let you send. InnerLoop tells you what happened next — and helps you do better every time.
Each newsletter feeds data back into the next. Over time, your engagement scores climb — and your team feels more connected.
Build and send beautiful newsletters in minutes.
Know who read every word — and who didn't.
One number (0–100) that tells you how it landed.
AI insights and tools to make the next one better.
Watch your engagement trend upward over time.
“Opened” means nothing when your email client pre-loads everything. InnerLoop measures how long each reader spent on every block — not just whether the email was opened.
They read the whole thing. This is what good looks like.
They scanned it. Caught the headlines but not the detail.
Opened and closed. You know who they are now.
CSS-delay tracking pixels measure actual time on each block. No JavaScript required. Works in every email client including Outlook.
Block heatmap
Week 14 · Company Update
Per-block depth
No JS required
Engagement Score
Week 14 · Company Update
Apple MPP opens filtered out · Bot clicks excluded
Team rating
4.8 / 5.0
The Engagement Score (0–100) combines five signals into one clear metric. No spreadsheets. No averaging open rates in your head. Just a number that tells you how well your newsletter landed.
Apple Mail Privacy Protection opens are automatically filtered out. Bot clicks are excluded. Your score reflects real human engagement.
Knowing isn't enough. InnerLoop gives you the tools to act on what you learn — and make the next newsletter better.
Test two subjects on 20% of your team. InnerLoop auto-sends the winner to the rest. No guesswork — just data.
Three days after send, get a prompt to re-send with a fresh subject line — reaching people who missed it the first time.
AI learns your team's open patterns over time and recommends the optimal send window for maximum reach.
Before you hit send, AI checks your newsletter for tone, clarity, reading level, and accessibility. Catch issues early.
Every newsletter you send adds a data point. Over time, your engagement trend line shows whether your communications are getting better — or where you need to course correct.
See which weeks performed best, which formats resonated, and whether your score improves after you switch up the subject line or change your send time.
Engagement trend
Last 8 newsletters
Best score ever
80 — this week
Send your first newsletter, track real engagement, and start building the habit that compounds.