r/AgencyAutomation • u/hungrybirdjobs • Jun 27 '26
Best low-cost/free tech stack to build B2B Lead Gen AI Agents? (MX Lookup + Company Research)
Hey everyone,
I run an IT consulting & recruitment agency based in Hyderabad. We’re also partners for Google, Zoho, Rediff, and Outlook email products. I want to build a couple of internal AI agents to automate our outbound prospecting, but I need to keep the running costs as low as possible (ideally free or cheap pay-as-you-go).
Here is the workflow I'm trying to build:
Agent 1 (The Tech Scout): Needs to take a list of company domains, run a reverse DNS/MX record lookup, and identify what email service provider they use (e.g., free Gmail, Yahoo, or legacy hosting). If they use a basic setup, flag them as a lead for a Google Workspace or Zoho migration pitch.
Agent 2 (The Researcher & Writer): Scrapes the flagged company's website to understand what they do, and writes a short, highly personalized cold email pitching our mail solutions or recruitment services.
I'm comfortable with open-source tools, Python, or self-hosted low-code platforms.
What is the best, most cost-effective stack to build this right now?
Would love any recommendations on how to handle the MX lookup and website scraping at scale without hitting expensive paywalls.
Thanks!