bernardohcr

By the way, do you have any recommendations for publishing it someone somewhere else?

Oh I see. Perfect. I was just fine tuning and looking for feedback and I I have now tested more in my own business and but I haven't made a big splash, I just posted here and that's it. It was just like to connect some initial feedback.

Yeah about writing it manually that would be good I was just trying to make it better since I'm not a native English speaker so was just trying to make it a bit better. :)

Excellent feedback, thank you so much. I have completely rewritten the readme file, so here it is in case you wanna check. :)

https://github.com/bernardohcrocha/claude-code-os/

Thank you so much once again.

Also, one of the major use cases for this kind of solution is for recruiters.

Its also extremely common that VCs and people interested in acquiring businesses cold emailing companies in their interest niches.

I understand and respect your POV.

Nobody likes receiving random stuff, but if it is legitimate beneficial to my business, it's actually good IMHO.

In fact, we will enforce user verification via SMS (no VOIP allowed), exactly to ban spammers and focus on legit, B2B-only cold emailers.

As I mentioned in the comment, we're early and not publicly open. That's why the landing page is not 100% completed yet. A link was mandatory to post here...

That's a super valid question.

Actually, cold email is actually recommended by Y Combinator. They say it "is a necessary tool for helping build your startup"

It is just challenging because of technical aspects and lack of knowledge. We're starting with cold email infrastructure, but we'll evolve into a full-stack platform, including help to find, enrich leads, prepare high-converting sequences, etc. All without the technical BS (and costs) of tools like Clay and similars.

Here is a video that might help: https://www.youtube.com/watch?v=7Kh_fpxP1yY

Here is the podcast: https://podcasts.apple.com/us/podcast/how-to-convert-custome...

This is aimed only for legit B2B email outreach. We have abuse detection systems in place and monitor it closely. Accepting and following the Anti-spam Policy is mandatory. Let's not burn this ultra-high ROI B2B channel. :)

The InfiniteSpin is optional and have a strict and extensive prompt that keeps the original structure, goal, and tone, but rephrases the message WITHOUT changing any important info like numbers, names, data, etc.

We only use latest LLM models. We used Claude 3.7 Sonnet (and are now updating to 4).

Hey!

These are proprietary mailboxes. Yes, we’ve built an email server from scratch, so we could control and optimize every single layer of it, 100% focused on the inherent challenges of (legit) cold email at scale.

By being truly full-stack, we are able to automate a lot of stuff behind the scenes. I’m referring to things that are important, but very boring, technical, and time-consuming, so nobody actually do.

Example: instead of YOU manually monitoring blacklists and inbox placements in each mailbox, the system does that. If any issue is detected, it temporarily pauses sending from that mailbox and automatically increases warmup until it heals. Another example is rewriting each email to remove spam-trigger keywords and optimize other details (optional). That is done 100% automatically, so you can have way better results with zero maintenance work.

The system also has a dynamic sending queue for each ISP and takes into account the mailbox, domain reputation, and the most updated always-changing ISP rules.

These are only a few of the dozens of tiny optimizations we do, that compound into more sales.

The deliverability has been excellent, literally 100% based on daily inbox placement tests made over a week. We’re still optimizing some details before publish launch. Are you currently doing any cold email campaigns? If you want, it will be a pleasure to have a call and help with anything you need.

After years battling Google Workspace for cold outreach — bans, poor deliverability, expensive pricing, painful setup, and scaling issues — we decided to build the infrastructure we always wished existed.

We previously built and scaled TheChecker, an email deliverability SaaS used by Netflix, Mojang (Minecraft), and 6,000+ paying users worldwide. It was later acquired and became Emailable.

Now we’re building MailDock — a fully-managed, plug-and-play mailbox designed specifically for cold emailers.

It replaces Google Workspace seamlessly, with no changes to your existing workflow.

It’s like having a deliverability expert on call 24/7, monitoring, optimizing, and proactively fixing issues — for just $2/mo per mailbox.

We’re still early, but some tests showed very promising results and cost savings.

Would love your feedback, questions, and brutal honesty.