I'm Diego Mangabeira. Seventeen years in B2B sales, from IBM, 3M and NielsenIQ to fast-growing SaaS and AI startups. I build outbound systems that book meetings, and I write about the craft for a growing audience of operators.
I started in enterprise sales, carrying a bag and a number at IBM, 3M and NielsenIQ. I learned the craft the slow way: cold calls, dead pipelines, quarters that came down to the last week. Over seventeen years I sent more than half a million cold emails and made eleven thousand calls, and somewhere in there I stopped believing in the myth of the gifted closer.
The teams that win don't sell more. They build a system, so results stop depending on one person's willpower.
Today I do two things. I build outbound systems for B2B SaaS and AI startups through my company, BoringSales, the same person writing the cadences and building the AI workflows underneath them. And I write, every week, for a growing audience of founders, sales leaders and operators, where I sit in the top 1% of the LinkedIn Social Selling Index.
No hacks, no hype, no ninety-slide frameworks. Just the boring, repeatable work that turns activity into revenue, and honest writing about how it actually gets done.
Not a generalist. These are the areas I've earned the right to have an opinion on.
Cold email, calls and LinkedIn built into a motion that books meetings predictably. This is the craft behind 656K+ emails and a 69.1% lead-to-SQL rate.
Using AI to run sales systems lean, drafting the volume while judgment stays human. Harvard-certified in Agentic AI for business, and building with it daily.
Turning scattered activity into a documented engine a team can own and run, so pipeline stops depending on heroes and starts compounding.
Twenty years of the craft, distilled into content, curriculum and coaching, from LinkedIn to SDR training programs for teams learning to sell.
The thinking lives here first. Pick the format you like and follow along.
Nineteen thousand operators, founders and sales leaders. Top 1% Social Selling Index. The main stage for the daily thinking.
Follow on LinkedInThe best of what works in B2B sales, distilled weekly into something you can act on. Free to join.
Subscribe freeLong-form conversations on the unglamorous work that actually builds pipeline. For people who'd rather build than posture.
Listen inI speak to sales teams, founder communities and GTM events about building revenue systems in the AI era, from someone who still does the work, not just talks about it.
Through BoringSales, my team and I build outbound engines for B2B SaaS and AI teams, from strategy to the AI systems underneath. If you want the machine installed, that is where the work happens.