Would the pre-warmed random domains actually be efficient or just a waste of time and most likely not worth it? Would it be better just to stick to regular timelines instead of trying to speed up results?
Pre‑warmed domains are actually very cost‑effective. A regular mailbox might cost $4 per month, but the first 34 days are unusable, so you effectively spend about $7 before you can send anything, and you only start seeing returns after ~21 days. With a pre‑warmed domain you can send immediately, making the effective cost ratio closer to 1:35 rather than a simple 2.5× multiplier. If you need to spin up mailboxes fast, it makes sense to buy pre‑warmed domains, use them for the first month, then purchase additional mailboxes and cancel the pre‑warmed ones afterward. You’ll end up spending more on the domains themselves, but the overall arbitrage still works in your favor.