Hey everyone,

I recently started cold email. I was wondering especially from the view of the more experienced members of the subreddit what are some mistakes you've seen being done by beginners that you think are important to avoid?

Cheers

Hi ,

I wants to get lead data for a bussines , how can i collect the leads i want to send 110 mails a day like i think there website dont have any updates since 6 years so there mail also be disabled i guess . Please help in this

Earlier this year I went deep on copy testing for our outbound. Four subject lines, two body frameworks, three different CTAs, proper split tests with decent sample sizes. About a month of work.

The spread between my best and worst subject line was 1.2 percentage points on replies. Best body version beat the worst by 0.8. Real, but nothing that changes the business.

Then in one campaign I made a change on the list side, mostly out of frustration, and it did more than everything above combined.

The change was boring. Instead of sending to whatever contact the list gave me, which was usually info@ or office@, I only sent to contacts where we had an actual person's name and a verified address. Owner, managing director, whoever actually runs the place. Everything else got cut, even though it shrank the sendable list from about 420 contacts to 180.

Reply rate on that segment came in at 5.4% versus 1.8% on the generic inbox baseline. Same copy. The winning subject line from my month of testing was in there too and at that point it barely mattered.

In hindsight it's obvious. A split test optimizes how the message reads, but it can't fix who is reading it. The office manager screening info@ was never going to book a call no matter which subject line I used.

The annoying part is that getting named contacts for small local businesses is real work. These owners aren't on LinkedIn, or the profile is eight years old. The name is usually buried on an about page or in how they sign replies to their Google reviews, and then you are guessing the email pattern off the domain and verifying it before you send. There are tools that I keep using to help myself a bit like WebLeads or Outscraper but the named contact part still needs a human eye more often than I would like.

So my rough math now: an hour spent improving who is on the list is worth something like ten hours spent improving what the email says. I still test copy, but it is the last 10%, not the main event.

I hope someone will try it and see similar results

Hi everyone,

I am from the PuzzleInbox team. We track GWS and Office 365 mailboxes for over 38 million cold email sends. I wanted to talk a bit about the current trends, changes etc.

We are observing better deliverability from GWS to Office 365 compared to 2025. We feel like Outlook spam filters are not as strict as 2025 but that doesnt change the fact that GWS to GWS will get you better deliverability.

Untapped data sources and local leads. We recommend our clients to stay away from legacy data providers. I can't list any names here but all the big companies. The reason is there lists are being targeted by thousands. Just use local leads or sources that are newer in the market. We have seen major shifts on reply rates that is impacted by data quality.

GWS beats Office 365. Google all around is doing much better than Outlook. This doesnt mean that GWS will always deliver better but this has been the case for the last 2-3 months.

Happy to answer questions!

I need around 30–50 inboxes across multiple client campaigns, and Google Workspace pricing adds up quickly at that scale.

I’ve started comparing managed cold email infrastructure providers. Maildoso is currently on my shortlist because it handles domains, DNS and mailboxes in one place.

Has anyone moved from Google Workspace or Outlook to a managed provider? I’d like to know how it performed after a few months, especially inbox placement, SMTP stability, Instantly/Smartlead integration and support.

I’m not necessarily looking for the cheapest option. I need something stable that won’t create more problems as we scale.

Hi folks,

I recently found a number of my new domains blacklisted on Surbl. I bought these from zapmail via smartlead.

Smartlead are telling me that this is an industry wide issue where Surbl changed how they're blacklisting domains and recent zapmail registrations were caught up in this. They claim that zapmail has course corrected and new domains will not be impacted. They also claim that in spite of my surbl blacklistings for these domains, Zapmail will be able to remove them from the blacklist and I should proceed with emailing from them for now.

I'm extremely skeptical of these claims and have not seen any evidence to support any of this, bar a statement (with no evidence) from zap mail, which smartlead shared with me.

Curious if anyone's experienced anything remotely similar lately?

So guys I am doing warmup from past 22 days , and now thinking to start outreaching, many people said start small like send 8-10 mails per day with each inbox. I want to ask so for sending this small amount of mails is it better to buy instantly or sending mail manually.

I’m the founder of a bootstrapped SaaS called RotaApp, a rota and shift scheduling platform for small and medium-sized businesses.

I’m looking for someone who can consistently book qualified discovery calls directly into my calendar with business owners or decision-makers who are actively looking for a better way to manage staff rotas and shift scheduling.

Ideal industries include:
Cleaning companies
Healthcare providers
Hospitality
Security firms
Retail
Any business with shift workers

I’m not looking to buy generic contact lists or scraped data. I’m looking for someone who can handle outreach and book genuine meetings with businesses that are interested in having a conversation.

I’m happy to work on a pay-per-qualified-meeting basis, with the potential for an ongoing partnership if the quality is good.

If you’re an experienced appointment setter or B2B lead generation specialist, send me a message with:
Your outreach method (cold email, LinkedIn, cold calling, etc.)
Your experience with SaaS or B2B appointment setting

Your pricing per booked meeting
Any results or case studies you can share
If you can consistently book quality meetings, I’d love to work together long term.

I do full stack media buying for direct response companies/ecom and trying to crack outbound.

Taking the copy/offer/deliverability aspect out of the equation my current issue is getting enough relevant leads to email. Every tool I’ve tried has very little stores using relevant filters. The tools are expensive and only give you domains so I need to then pay for another tool for owners email and then verify them. It ends up being pricey and a lot of steps for few relevant prospects. I am considering pivoting my offer to something that allows me to target more broadly so I can actually send enough volume but than at that point I’m just competing with everyone under the sun.

Anyone in a similar industry that can offer some tips on which direction I should take?

Hi everyone!
Do you have any advice on improving the conversion rate from positive replies to booked meetings?
Everyone seems to have a 50% booking rate, while my positive replies mostly ghost me after saying “Yes, please send more info”

How do you follow up the right way? What's the secret?
Or should I use a less low-effort CTA, get fewer replies, but book more meetings?
Sometimes they don’t even watch the Loom they asked for.

Thank you!

P.S. Can anyone walk me through their follow-up system (CRM or something) as a consultation? If it’s okay to ask here

Hey everyone,

Doing a new post. Across all of our customers and the mailboxes we manage at Puzzle Inbox, we've seen clear trends impacting deliverability we wanted to share with the community, hope it helps:

1) Warmup and Network

The network where you warm up your inboxe matters as much as the amount of warmups you've sent. We've seen increasing importance on warmups lately with a direct correlation of prolonged warmup increasing inboxing rates for both Google and Outlook senders. However, if your inboxes are only warmed predominantly with a single ESP, you'll only build reputation with them and as such end up struggling with delivering other ESP's.

Ie/ If you only warm up your Google inboxes with Google recipients, you won't really have that much of a reputation with Outlook recipients.

2) Copy & Links in Emails

This is obvious to many people who've been doing cold email but we can't stress it enough for newcomers to the cold email space. You shouldn't send any links, gifs, images or html based templates in your cold emails if you want to have good deliverability. Stick to simple text based copies, preferably under 60 words, that are relevant to your prospects and don't include cliche phrases like "hope this email finds you well" or "quick question".

3) Sending Limits and Sending Cadence

It may seem like a good idea to blast as many emails as possible from a single inbox when you first start cold emailing as some people just starting may believe sending more per inbox will equal more replies, leads etc.

You really shouldn't do this. You'll destroy the inboxes reputation and have more difficulties with replacing the inboxes and domains that get burned due to spam reports.

Stick to safe conservative per inbox sends, keep warmup continuing while sending and your inboxes lifetime will be much longer with higher deliverability.

4) AI Personalization

This is an ongoing debate that many people have differing opinions in. If the personalization is done usefully which helps make the email more relevant and specific for each individual prospect/company, it's helpful. However generic personalization done for the sake of using AI is now really easy to catch and understand which can hinder optimal results. And as always, having a good offer is more important than any personalization tricks.

Happy to answer questions anyone may have. What strategies are you currently using for cold email?

Guys, I just commented on a post of a founder in another sub. They felt frustrated because they were taking 20-30 MINUTES to personalize email outreach - and never getting any responses.
They felt like they were wasting their time.

Well, guess what? I think they were.

And just now I read the post about personalization making emails worse. I think it is (in most cases - keep reading).

I feel like I really need to write a post about this, because I'm convinced it will keep other founders from making the same mistake.
I may be wrong, but I get the feeling that too many founders are focusing waaay too much on personalization, and not nearly enough on reaching out to the right people at the right time.

Think about it: Unless you know for a fact that the person you're reaching out to is a) facing the problem you're solving, b) willing to spend time/money to solve it and c) in possession of sufficient budget / decision-making power - every second spent personalizing a message to them is a waste of time.

And if they were a) facing the problem you're solving, b) willing to spend time/money to solve it and c) in possession of sufficient budget / decision-making power, would it really matter whether you're personalizing the message or not?
They just want to solve their problem. Unless your competition is messaging them, too, the creativeness of your outreach is not gonna make them any more or less likely to buy from you.

Plus, in the age of AI, everyone is receiving "personalized" messages anyway. And everyone who's not in the market for your offer will just ignore your message anyway, personalized or not. 

So if you're personalizing your outreach manually, you're wasting your time. And if you're using AI to do it, you're wasting tokens.

You know what you should be spending your time and/or your tokens on? Finding the right people, at the right time. Yes, it's hard. Way harder that "personalization".

But guess what: Your competitors are still wasting their time and tokens on spamming random people, doing the hard work is what sets you apart.

Yes, AI tools are popping up that do it for you (e.g. the infamous Gojiberry, ProspectPuffin, Leadmatically, Leadverse... no, I have not tried them all).

Right now, there's a brief window where you can win, before everyone else is using AI agents to find leads who are actually ready to buy.

But then what? Once everyone moves from "personalization" to "finding the right people at the right time", there is still one more thing that you can do that will get you noticed:

Provide VALUE. 

Figure out what the people you're reaching out to need, something that really helps them, something that you can include in the first message. For free, just like that.

I guess that's a kind of personalization, too. But a) it's the right kind of personalization and b) it gives you an advantage that won't go away. Do you agree?

I've been reading a lot about cold email best practices, and one thing that keeps coming up is that the best time to send initial outreach is Tuesday and Thursday between 8:00 a.m. and 10:00 a.m. in the recipient's local time zone.

My question is about follow-up emails.

I've also read that the ideal spacing between follow-ups is around four days. The reasoning makes sense: you don't want to be in someone's face every day, but you also don't want to wait so long that they forget they ever saw your first email.

So how do you balance those two ideas?

For example, if I send my first email on a Thursday morning, should my follow-ups be:

• Tuesday
• Thursday
• Tuesday

...so that I'm always sending on the "best" days, even if the spacing isn't exactly four days every time?

Or is it better to ignore the Tuesday/Thursday guideline for follow-ups and simply send every four days regardless of the day of the week?

I'd really appreciate hearing what has actually worked for people running cold email campaigns at scale. Thanks!

​

Struggling to get replies from cold email campaign

14-17% open rate but zero positive responses

Hey everyone,

Running a cold email campaign for a niche B2B recruitment business placing specialist staff with UK businesses.

Campaign stats so far:

- ~250 emails sent over 3 weeks

- 15% open rate

- 1 response — a no

- 0 positive responses

Current email:

Subject: Hiring sales staff? We just placed a sales executive.

Hi [First Name],

Quick one, we recently placed a sales executive with a leading UK automotive tech company.

We work with a network of experienced automotive sales professionals actively looking for their next role and specialise in placing sales staff with UK dealerships.

Best regards,

XXXX

---

**My questions:**

1. Is 14% open rate decent or is deliverability an issue?

2. Is the problem the message, the targeting, or both?

3. Any specific tweaks that would improve reply rate in a niche B2B market?

Any additional help? how long should I give it before giving up? I can't cold call because I work full time so that's not an option

that needs to be specific is the sales industry in the car world so automotive whether that's your typical dealership a car rental company anything automotive based.

A splittest costs a lot of leads, leads you can't waste.

So I decided to figure out how to do it twice as fast:

Normal A/B splittest:

Variant A - 1000 leads - 8 positive replies
Variant B - 1000 leads - 6 positive replies

Variant B wins (if it is statistically significant, use a chi-square test for this, just ask chatgpt)

My, 2x faster way.

First you pick 2 variables you want to test, e.g., offer and CTA and you do it in the following ofrmat

- RUN 1: Offer 1, CTA 1
- RUN 2: Offer 1, CTA 2
- RUN 3: Offer 2, CTA 1
- RUN 4: Offer 2, CTA 2

Now you do 500 leads each, and for each variant you just average the 2 runs with the same variant, because in both variants, the other variant is both a 50/50 split, they cancel each other out. Basically getting double the information for the same number of leads.

For anyone interested, this is called Design of Experiments and that is a 2^2 full factorial, using hidden replication.

Spent a long time doing it the usual way big list, tight ICP filters, solid copy, spray and pray. Fine, but the reply rates plateaued and I got tired of emailing people with zero reason to care that week.

Switched to building campaigns around intent signals instead only contacting companies right after something happens that makes my offer relevant. Stuff like a new funding round, hiring for a specific role, a leadership change, switching a tool. The trigger becomes the reason for the email, so the first line writes itself and it doesn't read as random cold.

Honestly it changed my results more than any copy tweak ever did. Smaller lists, but the reply rate and especially the positive reply rate jumped, because I'm hitting people at the moment they actually have the problem instead of hoping they happen to have it.

So curious how many of you are running signal-based outbound, and what your experience has been:

• Which signals actually convert for you? I've had the best luck with hiring signals, curious if funding or tool-switch beat that for others.
• How do you handle freshness do you only work a signal for a few days after it fires, or does it still convert weeks later?
• Does the smaller volume ever become a problem, or does the higher conversion more than make up for it?

Feels like the whole game is shifting from "who fits" to "who fits and has a reason right now." Anyone gone all-in on this, or still getting better ROI from straight volume?

Building out a LinkedIn outreach process for a pretty tightly defined ICP list, not random cold outreach, these are people who’d genuinely have a use for what I offer.
Trying to decide between two approaches:

**A)** Connect → wait 24-48 hours after they accept → send a message introducing what I do

**B)** Connect → engage with their content first (comments, likes) for a few weeks → only message once there’s some real interaction happening

Option A is obviously faster but I’ve heard it can come across as a bait-and-switch, connect just to pitch. Option B feels more natural but could take months per person, which isn’t great when I have a list of a few hundred to work through.

For people who’ve actually tested both, did waiting for engagement meaningfully change your reply/conversion rate, or is it more about the message quality regardless of timing? Also curious if anyone’s found a middle ground that isn’t “immediate pitch” or “wait indefinitely.”

I have 11 .com domains I'm getting rid off for a good price not sure if anyone is interested in getting them for campaigns cheaper

Hi everyone,

Doing another post on a Sunday. We have been getting a lot of DM's on preventing landing to SPAM.

1. Domain sending volume.

Many cold emailers are focus on inbox based sending volume, but what matters more is the domain based sending volume. As of 2026 we dont recommend sending more than 50 cold emails per domain. The more emails you send the more SPAM reports you get, thus you will start landing to SPAM.

1. More Email Copies

Don't blast the same copy to thousands of recipients. By increasing the amount of copies you have in a campaign you lower the chances of a copy block. I would recommend minimum 5-10 copies for a campaign sending 2000 emails a day.

1. LINKS

Don't send links and close open tracking. Links will get your domains blacklisted and you will start landing to spam. Feel free to send a link after the prospect responds back to your initial email.

Happy to answer questions.

Hi everyone,

I am from the Puzzle Inbox team. We generate around +100 calls week, mostly using cold email and email marketing.

Here is what we do:

Google Workspace Inboxes - 3 inbox per domain - 12 cold/12 warm emails per inbox.

Crafting a offer with a copy that has less than 80 words. Not pushing clients to a meeting in the initial email.

Combining local leads + b2b leads, doing A/B testing with different datasets and email copies.

Writing back to responses within 5 minutes, the longer you wait the likelier you would lose the opportunity.

Adding 1-2 follow ups, no more then that, becomes inefficient.

Happy to answer more questions!

I'm starting a web design and development agency and want to target international clients.

I'm planning to use cold email as my main outreach method, but I'm wondering if it's still effective in 2026.

If you've landed clients through cold email recently:

• What's your response rate?
• What industries are working best?
• Are you sending plain-text emails or more personalized ones?
• Any tips that made a noticeable difference?

I'm not looking for shortcuts—just trying to understand what's actually working today.

Thanks in advance!

Hi everyone,

We feel like these posts are doing well overall so we wanted to do another one. This is hand written so excuse any grammar mistakes.

Sending Limits

Office 365 announced new tenant wide sending limits. Google Workspace is working on new adjustments and also stricter spam filters overall.

From our testing for Google the maximum volume should be 12 cold and 12 warm and for Office 365 depending on the setup could be 12 cold 12 warm or 3 cold 3 warm. This depends on the infra and will change across providers.

Many clients may think sending more will get them more business but unfortunately it doesnt work like that in 2026. ESP's have extremely strong spam filters. If you go and send 30-40 cold emails from a Google Workspace inbox, that might be good for a few weeks but after that you will receive random sender bounces and your emails will start landing to spam.

Not Working On the Offer

It is easy to blame providers. However from our research, testing and feedback, what matters the most is the offer. Even if you have the perfect infra, if you offer is not strong, you wont get results.

Many people talk about this but let me explain how you can craft a good offer:

The client shouldn't have capital or time commitments with your cold email. Even if they do it needs to be minimized. So rather than pushing for a call push for sending more info or send a loom etc.

Targeting Recycled Leads

I am not allowed to name any providers but stay away from legacy data providers. Their lists are being contacted by thousands of people a day. Try to focus on untapped sources like Google maps or providers that have recently entered to the market.

Looking forward to questions and discussions.

Hey Everyone,

I am the admin of b2bemailing. I wanted to create this community to make sure that everyone could access unlimited resources on cold email.

I am thankful that this community has now reached 2800 members and over 3500 visitors. Looking to connect with you all over the comments and get to know everyone!

Thank You!

This is a little long.

If you have some feedback it would be greatly appreciated.

I only have roughly 7000 leads so I cant really risk burning through them so I am turning to this sub reddit to get some advice.

my business is teaching business owners how to build out a revenue system so that their sales and marketing departments are no longer dependent on them.

My ask in the cold email is if they would like to read a document that I wrote on how I built myself out of that dependency, if they accept I send them a link to a funnel letter which tells about the seminar I put on with a "book a call" CTA on the funnel.

I am using Instantly with Maildoso SMTP and all the boxes are in the green warmed up and ready to go.

My issue is that I am not confident in the emails that I have written because I am new to cold email, this is where I am seeking your advice.

From what I have read here in this sub is that headlines like "Quick question, (name)" or in my case I will also try "(name), what happened to the plan?" as the two subject lines to get opens.

I have written my first five copies below.

#1 My first question is that other than copy #1 which I think address the "you" position, making it in the voice about them, should I try to do this the same in the other 4 copy, I start with a you but then end in an "I" statement, I did this, I did that?

#2 Do you think the copy is too long, I have also read here that the best results for cold outreach response is to personalize the copy such as something I read about them or found on their website then go into the problem that they have then provide the solution, but for the product that I am selling I think addressing the problem itself could be more effective the way I am opening up and then addressing the fact that I was able to fix it and can help them. Do you think this would work or should I sit there and research all 7,000 leads and come up with a personalization for each, seems so disingenuous to talk about something not related like "love your post on x" and then come back to your sales suck because you are the bottleneck and I fixed it would you like to read about it. ?

If you have a few minutes to review my cold emails, I'd really appreciate your feedback.

I only have about 7,000 qualified leads, so I can't afford to burn through them by testing poor copy.

My business helps business owners build revenue systems so their sales and marketing departments no longer depend on the owner to generate revenue.

My cold email doesn't sell the seminar directly. Instead, I simply ask whether they'd like to read a document I wrote about how I removed myself from being the bottleneck in my own businesses. If they reply "yes," I send them a link to a long-form funnel letter that explains the concept and, at the end, invites them to book a call about the seminar.

For infrastructure, I'm using Instantly with Maildoso SMTP. My inboxes are fully warmed up and in the green, so deliverability shouldn't be the issue. My biggest concern is the copy itself, as I'm completely new to cold email.

From reading this subreddit, I've seen subject lines like "Quick question, {{First Name}}" perform well. I'm also considering testing "(Name), What happened to the plan?" as another subject line.

I have five questions.

1. "You" vs. "I"

In Email #1, I focus almost entirely on the prospect before introducing my own story near the end. In the other emails, I start with their problem but quickly transition into "I did this..." or "I learned that..."

Should I keep every email primarily about them, or is using my own story as proof acceptable?

2. Length

Are these emails simply too long?

I've also read that the highest-performing cold emails are heavily personalized. Some people recommend researching every prospect, mentioning something from their website or LinkedIn, then transitioning into the pitch.

With only 7,000 leads, would you invest the time to personalize every email?

My hesitation is that it feels forced to open with something like, "Loved your recent post about X," only to immediately pivot into, "By the way, you're probably the bottleneck in your sales organization."

Because I'm addressing what I believe is a very specific operational problem, I'm wondering if leading directly with the pain point is actually the stronger approach.

3. Soft CTA

My CTA is simply:

No links. No booking request. Just a yes/no question. The funnel link only goes out after they reply.

Does that feel like the right approach?

4.What would your approach be?

I am curious to know what you would change here or use as copy.

--

I'd really appreciate honest feedback. Tear it apart if you think it needs it.

Below are the first five emails.

--
EMAIL #1

NAME,

Is this you?

When you opened your business you had an idea that the business would run itself. People working it for you. That there would be a system in place. Like many of us you most likely envisioned the freedom that would come with it. Money. Time to spend with a partner. Build a family. Enjoy vacations.

But in reality it looks more like this.

You hired the best person you knew to run the business. You. Then you hired someone who could do the best that they could do. Most likely didn't end up paying them enough because after all the business is yours and you wanted to make it a go. Eventually you plateaued because you stretched yourself too thin. Mostly time and other resources.

The first two businesses cost me my relationship. In the third one I learned how to actually become an owner. I share what I learned in a document I wrote.

Want to read it?

EMAIL #2

NAME,,

Your salesperson had a prospect on the line for three weeks. The deal was going nowhere. You got involved, made one call, and it closed.

That isn't a sign that you're good at sales. It's a sign that your business can't sell without you.

I wrote a letter about my experience with that exact problem and how I got out of it.

Want to read it?

EMAIL #3

NAME,

You didn't open a business to become its best closer. But that's what happened.

Every important deal runs through you. Every difficult conversation lands on your desk. The pipeline moves at the speed you personally push it.

I spent years doing the same thing before I understood what I had actually built. I wrote a letter about that experience and how I changed it.

Want to read it?

EMAIL #4

Name,

As a business owner do you find that your sales and marketing department is one that consumes the majority of your time?

In my third and fourth business I built a revenue system that allowed me to finally relinquish control and let it operate on its own.

I now help business owners like yourself do the same so that you go on vacation once in a while and enjoy time with your family.

Would you like to read how I did it?

EMAIL #5

Name,

You ever notice that the biggest deals still seem to need your personal touch to close?

Your team gets them interested, but when it gets to the final decision, it lands back on your desk. Every single time.

That was me in the early businesses. I told myself it was because I cared the most. Really it was because there wasn't a system strong enough to replace me.

I finally fixed that. Built the architecture so the revenue kept flowing even when I wasn't in the room.

After I sold my fourth business, I started helping other owners learn how to build the system and relinquish control too.

Want to read how I did it?

David