Bartosz Staniszewski
Engineer at Coldabry
Bartosz Staniszewski is an engineer at Coldabry. He builds the automations, AI agents and custom apps the studio ships, and writes the playbooks on how the work actually gets done in production.
15 articles
Mobile Proxy vs Residential Proxy: Which One for Social Media?
Mobile or residential proxies for social media accounts? How CGNAT and sticky sessions work, 2026 prices per account, the NetNut takedown, and a decision table.
ManyChat Pricing 2026: What's Free and the Best Alternatives
ManyChat moved to five plans priced by monthly active contacts. What each plan costs at your volume, what the free plan and Meta's own free tools cover, and six alternatives compared.
LinkedIn 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.
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 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.
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.
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.