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).
First, open-rate tracking is unreliable these days because many email clients either auto-open messages or block the tracking pixel, so a low open rate below 25% isn't something to worry about; instead, run a deliverability check with tools like Glock apps or Mail-Tester to see if your emails are landing in spam. Moving to the numbers, with 2,000 emails sent and 8 positive replies you have a 0.4% positive reply rate. In cold email a positive reply is any response that isn't an outright rejection (e.g., 'this sounds great' or 'more info please'). That rate isn't stellar but it's not terrible—I've seen campaigns in the 0.5-1% range still generate good revenue, and my best campaigns have hovered around 20% (I hedge and say 20% because I don't recall the exact figure). The gap between your 0.4% and my best results shows a major opportunity to improve, and a very low positive reply rate usually points to weak copy. To lift that rate you can work on three areas: copy, audience strategy, and tactical details like send times, days, spin-tax, and deliverability. Of these, copy is the biggest lever; I've had campaigns where everything else was poor but the copy was strong and the campaign still performed. My copy framework rests on three principles: make the message information-dense (use as few words as possible to convey the point), make it feel hyper-personalized (hand-crafted to the recipient), and optimize for the platform—specifically cold email, where you can control the profile preview, subject line, the first ~100 characters that appear in the inbox, any attachments and their file names/types, and use those as levers to boost opens and replies. Most people fail by writing long, generic introductions like 'Hello Nick, I run a super cool company…'; instead, treat the email like a handwritten note to a lover in the 19th century—customize the opening lines heavily. Once the email avoids looking like spam, the recipient's next questions are: who are you, why should I care, and what do you want? Answer 'who' with a brief, personalized intro (you can use AI to help) that establishes relevance; answer 'why' with social proof—e.g., a recent Microsoft project or $133K earned last month using this approach; answer 'what' with a clear call to action (chat, sell, call, video). By anticipating the reader's needs through radical empathy you'll see higher engagement. Beyond copy, make sure you're targeting the right audience (avoid blasting contractors who are unlikely to have time), pay attention to sending times and days, and follow deliverability best practices. If you're getting meetings but no closed deals, the problem shifts to your sales process: adopt a standardized consultative sales script that uncovers pain points, guides the conversation, and presses on those points; I provide such templates in Maker School and in the Make Money with Make.com community. Ultimately, you need to sharpen your consultative selling skills and standardize your sales process so it's not ad-hoc.
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.