How do you handle clients who find the cold email stack too expensive, and how do you verify meetings were actually booked when charging per meeting?

So, let's answer the first one. Clients who find the entire cold email stack too expensive for them are probably not clients you want, because the stack likely costs $150–200 per month (maybe $250 depending on software and volume). For example, you can buy Instantly mailboxes at $4 each; 10 of them cost $40/month plus HyperGrowth at $97, totaling around $137. Lead costs are about $3–5 per 1,000 leads, so 10,000 leads cost $30–50. Altogether you can run the stack for under $200/month, excluding minor domain costs. If someone isn't willing to pay that, they're not a good fit—it's a core cost of growth, and they likely won't pay your $2,000/month management fee anyway. Regarding verifying booked meetings: you simply request access to the client's calendar (Google or Outlook). It's reasonable to ask for the calendar you're using to book meetings, so you can see which ones succeeded and adjust your approach. Alternatively, make calendar access part of your guarantee—you verify meetings were booked. With enough practice, this becomes standard operating procedure.