A large field, and mostly tiny
The directory groups the agencies by employee count, and the spread is lopsided. agencies grouped by employee count Of the total, 633 run on one to ten people and 710 on eleven to fifty; 198 sit in the 51 to 200 band, 26 in 201 to 500, five in 501 to 1,000, and only two carry 1,001 to 5,000 staff. Median size is eleven to fifty employees. Pune holds 27.0% of the largest-city concentration, and the top-ranked entry, Machbizz Marketers, is based there in the 501 to 1,000 employee band. Verified-email coverage across the list sits at 7.5%, with 12.1 tracked contacts per company on average. Pune and coverage figures
For an outbound programme, that distribution carries a plain warning. A one-to-ten-person shop can stay close to your account and move fast, but it may struggle to hold a steady volume of calls and messages across a long quarter. Larger houses carry bench depth yet split attention across many clients. With 710 agencies clustered in the eleven to fifty band, most of the choice sits in the middle, which is also where claims are hardest to tell apart. A directory entry is only a starting point anyway; RevenueBase itself says the recorded descriptions help you assess a match, and that you should check each company website for its current services.
Consumer tactics wearing a B2B label
Choosing well is harder than the headcount suggests, because plenty of these firms sell the wrong thing. One Indian guide argues that a large share of so-called B2B marketing in the country is really consumer marketing with a new client label attached. consumer tactics relabelled Enterprise deals, by its account, pull in four to ten people on a buying committee, with evaluation cycles that run three months to well over a year, so a nurture built for a single-session funnel leaves sales looking at thin pipeline. buying committee size For an outbound team, that gap shows up as leads that stall before a real conversation ever starts.
On AI search, the guides point the same way. One October 2026 ranking notes that Indian B2B firms now lean on AI-driven search and account-based marketing to reach decision-makers, AI-driven search while the other reports that buyers increasingly begin research inside AI tools rather than search engines. research begins in AI tools An agency that cannot explain, in plain terms, how it builds content to be cited by those tools is selling an older service.
Five things to check before you sign
Before shortlisting anyone, the same guide names five points an agency should clear without hesitation:
- Genuine B2B specialisation, not retail accounts wearing a new label
- Relevant vertical experience, since SaaS, fintech and manufacturing buyers each speak a different language
- Real demand generation capability, not just a content calendar
- Readiness for AI search, as buyers start more of their research in AI tools
- Reporting that ties to pipeline rather than impressions
Those five points come straight from that guide. five points to clear It also suggests asking each firm to show work for clients whose buying process ran past two months, a quick way to separate a genuine B2B shop from one coasting on retail accounts. Three questions are worth bringing to a first meeting: walk the agency through one B2B campaign and how it built pipeline, ask how it defines a qualified lead and whether that matches what sales accepts, and ask who works the account day to day and what their B2B background is.
Price should not lead the decision
Fees span a wide range. A separate October 2026 ranking publishes monthly plans from $149 to $499 for one agency, published monthly plans which means the vetting questions matter more than the sticker price. Low monthly plans can suit early-stage firms on lean budgets, while enterprise engagements are quoted case by case, so a headline figure tells you little on its own. That same ranking tells buyers to compare agencies on several fronts:
- Industry experience and previous case studies
- Lead generation process and reporting transparency
- Marketing technology expertise and budget fit
Teams weighing an in-house alternative can also look at LLM Leads. With 633 of the recorded agencies running on ten people or fewer, 633 small agencies a padded short list is easy to build, so keep it to three names that can prove B2B work on deals that took more than two months to close, confirm who will work the account each day, and drop anyone whose reporting stops at impressions.