Why does a well-performing email with a ~7% reply rate stop working after a week or two?
The issue is deliverability getting crushed, similar to cold calling. I run Clarvo, a power dialer that improves pickups, analogous to instant and cold email platforms. A common pattern: you start a campaign with a high pickup rate (e.g., 10%), it’s strong for the first three days, then each day the rate drops by 2‑3 %, quickly falling to 0.5‑1 % and you get squashed. This happens because big carriers and call registrars see the number making many calls, deem it illegitimate, lower its ranking and mark it as likely spam; the same occurs with your emails. Assuming this isn’t isolated, it repeats each time you send. Even if you think it’s not a deliverability problem, there are several causes: (1) Volume – you might be sending slightly too many emails per day. (2) Bounce – a percentage of emails bounce due to invalid servers, leading Gmail and Outlook to suspect automation. (3) Certain words trigger naive spam filters (the algorithms they use to judge legitimacy). (4) Recipients marking you as spam adds a signal that Google, Outlook and other platforms use; even one spam complaint per day out of 200 emails can significantly hurt deliverability over time. Additionally, ESPs, registrars and platforms continually tighten their filters; previously you could send 20‑40 emails per mailbox per day, now you need to stay around 15‑20, raising outreach costs. To test whether your emails are landing, avoid open‑rate tracking (it harms deliverability) and don’t track your main reply‑rate campaign. Instead create a separate campaign—for example, a free podcast campaign—pretend you’re a big YouTuber with a million followers and invite people to be on your podcast. Virtually nobody says no, giving you an easy “yes” to benchmark email performance with a real‑sounding offer (even if you can’t actually fulfill it). This bypasses deliverability placement tests, which are often unreliable. I personally run such a campaign constantly or turn it on when I suspect mailbox issues, directing a few emails to a compliment and an invitation to my podcast (which has over a million subscribers).
The reason your campaign started strong then declined is that your deliverability decreased over time. When deliverability drops, fewer emails reach inboxes, more get marked as spam, which further hurts deliverability—a negative feedback loop. This usually happens because either your email copy is poor, causing recipients to mark you as spam, or you're sending to a low‑quality list. To fix it, improve your copy and clean your list. Many people use email validation tools like mails.so to check DNS records and get a deliverability score; you can set a cutoff (e.g., only send if >50% deliverable) to automatically remove bad addresses. This cuts out bounces and boosts deliverability and campaign health, though it adds cost (you pay for the validation service), takes extra time to set up, and reduces your lead pool—often to about 30% of the original list after validation. So you trade some volume for better quality and fewer bounces.
Sure, I can talk about it now and, if there’s enough demand, I’ll make a full video later. The reality is that with a bigger budget you can move everything about ten‑times faster, maybe even a hundred times faster. For example, most people are limited to about nine mailboxes sending 30 emails each per day – roughly 270 emails total, or 135 new leads per day in a two‑step sequence. If you scale up to 90 mailboxes at 30 emails each, you’re looking at 2,700 emails a day, or 1,350 new leads daily, for a very low monthly cost (around $270 if you use a mailbox reseller). At a 0.02% reply rate that’s 27 positive replies, which can translate to three calls a day. With a good campaign you can convert 10‑15 calls per day, and even if 30% drop off you still get seven to ten quality calls. Assuming 45‑minute calls, you can fill an entire day’s calendar and close a couple of deals daily. If each deal is $2K, that’s $4K a day, or about $80K a month running 20 days, not counting upsells or retainers. In short, if you’re well‑resourced you can realistically schedule $80K‑plus a month with a productized offer by going all‑in on cold email, as long as you have enough leads to fulfill the volume. This means broadening your top‑of‑funnel targeting across more general niches. For a $5K‑$15K budget, $270 is only about 2.7% of the spend, leaving roughly 4% of margin for growth.
When you see high bounce rates, the first thing to do is verify your email list. Depending on how you generated the list, you can use third‑party verification tools such as MailerCheck, ZeroBounce, or similar services that give you a deliverability score. Set a minimum threshold—if a contact falls below it, don’t send to them. Proper verification can eliminate roughly 50 % of bounces. I have free credits through Maker School and other deals, so you don’t have to pay a lot. My typical process is to send a small test batch of 1‑2 k emails to identify which niches or copy combinations perform poorly, then verify the good ones and scale the campaign. This way you only pay for verified emails that are likely to convert.
List Kit. I don't know what List Kit is. Oh, right. It's these guys. I remember. Okay. Well, the reason why this is going to suck is because I'm not going to be able to repurpose this. Anyway, whatever. Simple pricing everything included. Pick your sending volume. 1,000 cold emails per day is 30,000 a month. Zero additional costs. Triple verified leads, email engine, domains and inboxes. So, what you get is 30,000 emails a month. If you do the math on cost per email, 1,000 realistically costs about four or five bucks. Let's say five times 30 gives $150 lead cost, assuming high-quality leads. But they're probably not high-quality; they're likely trying to sell you the shittiest leads possible. Let's say that's $100 a month. So the actual cost of service outside of that is $497, roughly $500. Email engine, send high-volume cold email campaigns with inbox warm-up included. That's basically Instantly (Unibox), another $100 off, leaving $400. Domains and inboxes: at 1,000 cold emails per day with a two-step sequence, that's 500 new emails, which is about 25 mailboxes, another $75. With overages, say $100, making $300. Script writing agent, one-on-one concierge onboarding call, Slack community, cold email mastery course, domains — all virtually free. So you're paying about $300 a month for the service of sending the emails, plus the simplicity. You could save $300 a month managing it yourself with the steps I talk about, but maybe that's worth it for you. Let's see what their math is like: 1,000 emails per day, total replies 220, positive replies 11. That's a 5% positive reply rate on total reply volume? Actually they assume 5% positive reply rate on total reply volume, but I have campaigns with 50% positive replies. That's pretty crazy. Assuming 30,000 total emails, 220 divided by 30,000 gives a 0.73% reply rate, which is low. But average client LTV industry is big, maybe that makes sense. Hopefully everything I've said so far is amenable to you.