Field Notes
AI automation, custom apps, case studies and news from the Coldabry studio.
Latest
All categoriesLinkedIn Connection Limit in 2026: Weekly Cap, Reset, Safe Pace
LinkedIn publishes no weekly invitation number. We read every LinkedIn help page on invitations, notes and InMail, then built a safe weekly plan with the math shown.
Instagram Account Suspended for No Reason? How to Appeal in 2026
Instagram suspended your account and the appeal screen is vague. What the notice means, where the 180-day rule comes from, what to submit, the EU escalation route and why Meta Verified is no rescue.
Cold Email Follow Up: How Many to Send and When (2026 Data)
Two big 2026 datasets disagree on cold email follow-ups. We reconcile them: how many to send, how far apart, what each one says, six templates and the spam limits that cap it.
What's Wrong With Most Property-Valuation Widgets (And What We Built Instead)
Most valuation widgets collect an email and call it a lead. We asked one question first, refused to show an exact price, and cost per meeting fell from ~550 zł to ~145 zł. One thing still isn't fixed.
We paid for a week of ads and measured nothing. The cookie banner ate it.
1,213 impressions, 34 clicks, zero conversions. The pixel was not broken, it was waiting for permission nobody gave it. How to check your own site in 20 minutes.
How Aesthetic Clinics Use AI to Increase Sales: Inside Partner Wzrostu's Growth Engine
I build the software behind Partner Wzrostu, a Polish agency for aesthetic clinics. Here is how their per-ad revenue attribution really works, and what it caught that Meta never would.
How to Get an E-Prescription Online in Poland Without Getting Scammed (2026 Guide)
Online prescriptions in Poland are legal and fast, but the market mixes real medical services with form mills. How e-recepta works, the red flags to check before paying, and how to compare providers on medranking.pl.
The Best Instagram Cold DM Tools in 2026: Pricing, Ban Risk and Cost per 1,000 DMs
We compared nine Instagram cold DM tools on real pricing, per-DM economics, ban safety and community sentiment. The spread is 30x, the Reddit threads are ads, and the safest architecture wins.
How Often Should You Publish Blog Posts? A Solo Founder's Guide
How often to publish blog posts depends on your goals and capacity. Most solo founders see the best results publishing 1 to 4 quality posts per month, consistently.
A Self-Hosted AI Agent in the Marketing Department: 13 Real Use Cases
Not a $99 CMO-in-a-box. A small VPS, a Telegram bot, and a dozen jobs that quietly remove marketing busywork. The use cases, the stack, and what practitioners actually report.
Case Study: An AI Sales Engine for a B2B Skincare Brand
One platform, two engines: AI prospecting that works 36,000 leads, and account intelligence that reads every invoice to catch ~30% silent churn before customers leave.
Case Study: Automating a Company with Self-Hosted Hermes Agents
How we automate our own company with a fleet of self-hosted AI agents: one per function, reachable from Telegram, running scheduled briefs and skills on cheap private boxes, with our data and keys never leaving.
Studio Update: What Coldabry Shipped in Q2
A short roundup of what we shipped this quarter for companies and communities: AI agents, custom apps, and automations that went live in weeks.
How We Ship Custom Apps in Weeks, Not Months
The actual process we use to take a custom app from idea to production in weeks: tight discovery, agent-assisted build, and a deploy you can trust.
AI Automation That Pays: Picking Wins With Real ROI
Not every process is worth automating. Here is how we pick automations with real payback, measure the return, and avoid expensive AI theater.
Case Study: An AI Support Agent That Cut Tickets 80%
How we built a support AI agent for a growing SaaS team, shipped it in three weeks, and removed most of their repetitive ticket volume without losing trust.
Build vs Buy: When a Custom App Beats Off-the-Shelf
A practical framework for deciding when to build a custom app versus buy SaaS, with a clear comparison table and the questions that actually decide it.
Agentic Workflows: Replace Internal Tools and Manual Ops
How agentic workflows replace brittle internal tools and manual ops work, with the architecture, guardrails, and tradeoffs that make them safe in production.
Case Study: How We Built Seovane, an MCP-Native Organic-Growth Engine
How we built Seovane: an MCP server you connect to your AI, giving it the full organic-growth toolkit, content and publishing across Google, AI answers and Reddit, so the AI brings you customers.
Case Study: How We Built instaoutreach, an Anti-Ban Instagram Outreach Engine
How we built instaoutreach: a multi-tenant Instagram outreach engine where anti-ban is the architecture, one account to one proxy to one fingerprint, warmed before a single DM, engaging before it ever asks.
Case Study: How We Built ImmoCRM, a Lead Engine for Estate Agencies
How we built ImmoCRM: a multi-tenant platform that captures an estate agency's Meta leads in seconds, auto-routes them to the right agent, and even generates its own leads with an automated property-valuation engine.
Case Study: A Patient-Acquisition Engine for Aesthetic Clinics
How we built Palyri: a multi-tenant platform that captures a clinic's leads the instant they arrive, routes them to the right person, and runs the whole appointment pipeline, from ad click to treatment, in one system.
Case Study: A Vector Knowledge Base and AI Chat for a Skincare Brand
How we built a grounded AI assistant for a premium skincare brand: a vector knowledge base that turns the brand's own content into semantic search, so every answer comes from verified sources, with citations.