Engineering, design, and product decisions written down so they're useful to someone other than the author six months later.
A practical guide to using a free email tracker in Gmail — how open and click tracking actually works, how to set it up in minutes, how accurate it really is, and whether it's legal.
Read the postSince iOS 15, Apple pre-fetches every tracking pixel whether or not the email is opened. That inflates open rates by 40–70% for some lists. Here's how MPP works, how to detect it, and what to trust instead.
We tested the top free Gmail email trackers head-to-head on privacy, accuracy, and deliverability impact. Here's which one you should actually use.
Gmail's built-in read receipts require recipient consent and only work within the same Workspace domain. Here's what actually tells you when someone reads your email.
A practical, non-technical guide to email tracking in 2026: what to track, what not to trust, how to stay deliverability-safe, and how to pick a tool that won’t ruin your data.
Learn how to add email tracking to a web application without hurting deliverability, user trust, or performance. A practical guide for SaaS teams and developers.
Building a sending or outreach pipeline? Discover the technical, security, and deliverability differences between Gmail API OAuth2 and traditional SMTP relays.
Wondering if your important email was opened? Learn the best methods for tracking email opens in Gmail, from native read receipts to powerful tools like Maildriply.
A practical breakdown of email open tracking inside Gmail — the pixel, the image proxy, deduplication, and the bot heuristics that determine whether an open is real.
The smallest Gmail OAuth scope means we can't read your inbox, which means a few features are harder to build. We think the tradeoff is worth it. Here's the math.
Open tracking is the most popular metric in email and one of the noisiest. Click tracking is harder to get right but tells you more. Here's how we use both.