How are you all actually mapping and sizing your TAM these days?
So I run cold email / outbound (for my beginning agency) and I keep seeing people on LinkedIn and X talk about TAM mapping like it’s the most important thing you can do before you send a single email. A lot of the folks saying it seem to actually know what they’re talking about, and honestly it’s making me feel like I’m stuck doing outbound the old way (build a big list, spray, pray, iterate, fin a new segment).
I want to fix that but I’m a bit lost on the how, so I figured I’d just ask people who do this for real.
A few things I’m trying to wrap my head around:
- Why has this step become such a big deal now?
- How do you actually map your market in practice? What tools, what data sources, what does your process look like start to finish?
- How do you segment once you’ve got the market mapped? I sort of get the idea but I’d love to hear how you actually cut it (industry, size, tech stack, signals, whatever you use).
- And how do you tier it? My assumption is something like: tier 1 gets cold call + LinkedIn + cold email, tier 2 gets LinkedIn + cold email, tier 3 just cold email. Is that roughly how you think about it or am I oversimplifying?
Basically I want to move from “segment A list” then I try "segment B list" to something structured where the effort matches the account value.
If you’ve got a process that works, a tool stack you like, or even just a YouTube video or two that made it click for you, I’d really appreciate it. Trying to learn from people who’ve actually done it instead of just the LinkedIn hype.
Thanks a lot.