![Verified User in Computer Software](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Computer Software") UC Verified User in Computer Software Small-Business (50 or fewer emp.) 5/11/2026 "Clear proposal engagement signals helping us time follow-ups better" 5/5 What do you like best about Sellizer? The main thing I get from Sellizer is knowing whether a prospect is still engaged with our offer or not. When I see someone opening the proposal a second or third time, I know the deal is alive, and they're still considering it. It's a simple signal but a useful one - without it, you're just guessing whether to follow up or move on. I also like seeing which sections of the offer get the most attention and which get skipped. We don't always act on it directly, but over time, it gives us a sense of what to refine in our proposal structure and how we present our portfolio. Review collected by and hosted on G2.com. What do you dislike about Sellizer? It's a tool that not every team will be able to fully leverage - getting the most out of it depends on your internal sales processes and habits. If your team isn't set up to act on engagement signals in real time, some of the value will go unused. Review collected by and hosted on G2.com. What problems is Sellizer solving and how is that benefiting you? The biggest problem it solves is the black hole that usually follows sending a proposal - you send the PDF, and then you have no idea what's happening on the other side. Sellizer gives you at least some visibility: who's opening it, how often, and what they're looking at. In practice, this helps with two things. First, prioritization - knowing which deals are still warm and worth following up on. Second, predictability - over time, you start to get a better feel for whether a proposal is going to convert based on how the prospect engages with it. It doesn't replace good sales work, but it adds a useful data layer on top of it. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic See what 4 reviewers think of Sellizer 5.0 out of 5 ยท Verified reviews from real users [ Read all reviews ](https://www.g2.com/products/sellizer-sellizer/reviews)