How many pre-warmed domains should I buy to deliver 20 booked appointments in 60 days in B2B niches?
It depends on your goal. If you want to book 20 appointments in 60 days, that's about 10 per month, or roughly one meeting every three days assuming a 0.25% booking rate. At that rate, you need to send 400 emails to get one booked meeting. Over three days, that's about 130 new outbound emails per day. With a two‑step sequence, you only send half of your daily volume to new leads, so you’d need a total sending capacity of roughly 260‑390 emails per day. Since each mailbox can handle about 20‑30 emails per day (using a conservative 20), you’d need six to seven mailboxes—so seven pre‑warmed domains or mailboxes—to hit that volume and achieve your guarantee, provided you execute well.