I built a lightweight Gmail email tracker because I wanted something simpler
I’ve been working on OpenDot, a lightweight email intelligence tool built specifically for Gmail.
The idea came from a simple frustration: I wanted to know what happened after I sent an important email without using a complicated sales platform or CRM.
So I built OpenDot.
It lets Gmail users track email opens, receive real-time notifications, see engagement history, and understand when recipients are interacting with their emails — directly inside their normal Gmail workflow.
One of the biggest challenges was making the experience feel invisible. I didn’t want users to change the way they write or send emails. Install it, use Gmail normally, and OpenDot handles the tracking in the background.
I’m now at the stage where the product is live and I’m focusing on getting it in front of real users and learning from their feedback.
OpenDot has a free plan so people can actually test the core experience before deciding whether they need more.
I’d especially love feedback from founders, freelancers, salespeople, recruiters, and small business owners who send important emails through Gmail.
What would make an email tracking tool genuinely useful enough for you to keep installed?
OpenDot: https://opendot.app�
The “install it, use Gmail normally” part is probably the strongest choice here. Not forcing people into a separate workflow makes a lightweight tracker feel much more useful.
Feels like OpenDot could be pulling in a lot more organic traffic than it is right now. Especially at the real-user feedback stage where even a small stream of the right people could tell you a lot.
Are you seeing more interest from founders and freelancers or from people with more sales-heavy workflows?
The strongest part is the “invisible workflow” positioning. If users can keep working entirely inside Gmail while OpenDot quietly adds the intelligence they need, that is a much cleaner value proposition than becoming another CRM.