Why

10–50 inquiries/month is low volume, but with a 10+ person team you've got a coordination problem, not a capture problem. Referrals are your highest-intent channel and the most embarrassing to drop — when a client refers someone and three weeks pass without a reply, you lose two relationships, not one. Email-only intake at this team size means context lives in whoever opened the thread first, and at $15K MRR you can't afford that fragility.

What you actually need

1. Zoho Bigin (₹550/user/mo, ~$7) — India-built, dirt cheap for a 10-person team, and integrates natively with Gmail/Outlook so inquiry emails become deal records in one click. Set up two pipelines: "Inbound" and "Referrals" (track them separately — referrals close differently).
2. A shared inbox like Hiver (~$15/user/mo) or Missive — sits on top of Gmail, lets you assign every inquiry email to one owner with a status. Solves the "whose turn is it" problem before the CRM even opens.
3. A habit — the Monday referral roll-call — every Monday, one person reads out every open referral by name and the owner says the next step out loud. Referrals don't get to sit in "thinking about it" for more than a week.

Do this today

Sign up for Zoho Bigin at bigin.com, create two pipelines named "Inbound Email" and "Referrals", and give each four stages: New → Qualified → Proposal → Closed. Then add every open inquiry from the last 30 days as a record with an owner and a Next Action Date. By tomorrow morning each of your 10+ team members logs in to a view filtered to "my deals, action due today" — and you'll see within a week which referrals have been quietly rotting.

What to ignore

Skip HubSpot Sales Hub Starter ($20/seat/mo) and Salesforce Starter — at a 10+ person team that's $200+/mo for features you won't touch, and HubSpot's contact limits will bite the moment you import history. Ignore anyone pitching Apollo, Lemlist, or Outreach for "outbound scale" — you're a referral-led agency, cold outbound is the wrong muscle to build right now.

What doing nothing costs you

A conservative 15% slippage on 30 inquiries/month = ~4-5 lost deals. For an Indian agency at $15K MRR, even one missed retainer-shaped referral per quarter is the difference between hiring your 11th person this year or not.

When to revisit this

When referrals drop below 30% of new revenue, or when you start running paid outbound and need attribution across channels.