Stop guessing what your
competitors are sending.

Subscribe to competitor lists using unique tracking addresses. Every email they send lands in your dashboard — searchable, analyzable, and organized by sender.

Your competitive edge, automated

From inbox capture to full campaign analysis — everything you need to understand what competitors are sending and turn it into smarter strategy.

Monitor Every Email

Get a unique inbox address for each competitor and automatically capture all their emails in one place.

Track Trends & Patterns

Visualize send patterns with calendar heatmaps, see when competitors email most, and track frequency changes.

Analyze Subject Lines

Deep dive into subject line strategies, emoji usage, word patterns, and what drives their engagement.

Spot Campaign Tactics

Identify call-to-actions, track links, analyze preheaders, and understand their conversion tactics.

Generate Reports

Get per-competitor intelligence reports with frequency metrics, send times, and content analysis.

Real-Time Alerts

Get notified instantly when competitors send new emails so you never miss an important campaign.

Up and running in minutes

Three simple steps and you'll have a full view of what your competitors are sending.

1

Add a Competitor

Enter your competitor's name and website. We generate a unique tracking address tied to that competitor.

2

Sign Up to Their List

Use the generated address to subscribe to their emails — newsletters, promos, drip sequences, anything they send.

3

See Every Email They Send

Emails arrive in real time and are automatically analyzed for send patterns, subject line tactics, and campaign structure.

What our users are saying

"We went from manually checking competitor sites to having every email land in one place automatically. It completely changed how we plan our own campaigns."

Marketing Director

SaaS Company

"The send-time comparison view is something I pull up in every strategy meeting. It's made it so easy to justify our own scheduling decisions to the team."

Growth Lead

E-commerce Brand

"We added our top three competitors on day one and immediately spotted a seasonal campaign pattern we'd completely missed. Paid for itself within a week."

Founder

Startup

Ready to see what your competitors are sending?

Hundreds of marketing teams use Competitor Inbox to inform their strategy. Start your account in under two minutes.

Get Started
Building Something Unprecedented

The world's first email
activity database

Every email we capture becomes part of a growing, structured archive of how real brands communicate over time. We're not just saving emails — we're building the definitive record of email marketing in motion.

Full historical archive

Go back to any date and see exactly what a competitor was sending — campaigns, cadence, copy, and creative — as it happened.

Activity trends over time

Identify how brands' sending frequency, promotional intensity, and channel strategy shifts month by month and year over year.

Sequence & flow mapping

Automatically stitch welcome flows, onboarding sequences, and re-engagement series together from raw campaign data.

Delivery & design evolution

Track how a brand's deliverability signals, ESP infrastructure, and design language evolve as they scale.

Brand Activity Timeline — Shopify

Nov 2023
42
Dec 2023
38
Jan 2024
14
Feb 2024
22
Mar 2024
18
Apr 2024
26
18 months of data342 emails archived
Email Intel Newsletter

Stay ahead of every competitor move

Get weekly breakdowns of email strategy trends, competitor campaign insights, and tips from top marketers — straight to your inbox.

No spam, ever. Unsubscribe with one click.

Weekly insights Real campaign examples Free forever