Building Maildroppa with GPT Codex + Claude Code. Claude is fast; GPT Pro thinks deep; they review each other. In weeks: 35-language React app, revisions, health scoring, Rspamd spam check, backend refactor for A/B testing. Heaven + hell: speed is addictive, pressure is brutal.
Posts by Marcus Biel
Is it just my bubble or is the entire social media now exclusively talking about AI and the next secret best ever prompt 🤪
🚀 Maildroppa update is live
After 4 months of modernization focused on stability & clarity, we just shipped:
🗣️ UI in 35 languages
🧩 Central Footer Builder
🌍 Subscriber-facing text language
🔁 Undo / redo in automations
Built on a fully modernized codebase.
Feedback welcome 💬
AI won’t kill SaaS—it’ll kill trivial “A→B” utilities. Real software is years of decisions, edge cases, and domain knowledge. AI can write code, but you must specify. Without deep understanding, prompts produce polished junk.
AI won’t kill SaaS—it’ll kill trivial “A→B” utilities. Real software is years of decisions, edge cases, and domain knowledge. AI can write code, but you must specify. Without deep understanding, prompts produce polished junk.
🚀 Maildroppa update is live
After 4 months of modernization focused on stability & clarity, we just shipped:
🗣️ UI in 35 languages
🧩 Central Footer Builder
🌍 Subscriber-facing text language
🔁 Undo / redo in automations
Built on a fully modernized codebase.
Feedback welcome 💬
Just learned about git bisect from Claude. Wow :)
Toxic customers ... 🤬
🎉 Just hit 1337 followers — call me 1337!
For the non-nerds:
💻 1 = L
💻 3 = E
💻 3 = E
💻 7 = T
That’s right… LEET, short for ELITE 😎
During a React Flow rebuild, edges went wild. Screenshots + AI (ChatGPT 5 Pro, Claude, Juni Ultimate) didn’t help. I wrote: "node top-left, another to the right; put a + at their midpoint." Instant fix. Lesson: images can mislead—precise text wins.
Not sure how I did it.. but.. wohoooo! :)
really miss GPT 4.5 for writing and o3 for coding.
It's weird how Sam Altmann made this big statements of how super smart GPT 5 was -when it's not. Super slow is all that it is.
Sonet 4.5 got quite nice though!
What are your experiences?
Prospect: “Mailchimp is too pricey. Do you have nonprofit pricing or pay‑as‑you‑go?”
Me: “You can try all features for free.”
Prospect: “Great—can you do a 1:1 concierge demo instead?”
I finally get to share: Maildroppa’s #zapier integration is live :) 🚀 We’re even sitting next to Figma in the new apps feed 🙌 Create/update subscribers, manage tags & segments, run searches & counts—all for free.
zapier.com/apps/maildro...
🚀 Early access: Maildroppa × Zapier
Automate subscriber workflows (create/update, tags, segments) and trigger your campaigns via tags.
Want in? DM your Zapier email with “ZAPIER”. Beta perks: priority support + setup templates.
#Zapier #EmailMarketing
Do you know someone who knows about Zapier CLI? I am failing to create a nested zapier action - to create a list of list of elements, as seen in the screenshot.
2-week verdict on Claude Max: gorgeous code 😍, zero context 🤪.
It invents APIs and gushes that you’re brilliant even when you’re wrong.
GPT-O3’s code may be less pretty, but it has much more context and just works—and it’s far less of a yes-bot.
Back to GPT 🤠
Life is hard sometimes
Well the most expensive version that won all tests yet still it sucked big time.
I avoid eating it french
Fries / chips, but when I do they need fat. Lots of it 😋
The article is one of my oldest worst btw 🙈
Just received a cold email so bad it made me laugh and cry 😂😭
Had tried the premium model and quickly sent it back. It's nothing more than a hairdryer.😩
I don't need a hairdryer for my head so neither for my food 🤷♂️
Running Google Ads with tracking? It takes FIVE separate Google accounts, all wired together. Absolute nightmare and an insult to marketers. Full rant → www.linkedin.com/posts/marcus...
🚀 I’m available for a new freelance contract!
Expert in Startups, Email Marketing, Java, Spring Boot, Quarkus, Micronaut, Cloud, DevOps & AI.
Happy to help you build clean, scalable systems.
DM me or forward my details.
#Java #freelance #DevOps #Cloud #AI
Small kids. They will make sure you reset every morning 🙈😂
Pope has been elected. Rumors say it will be a man 🙈
Goodbye, my love, we had so many good years. Missing you.
Wohoooo :)
You should rather learn Java and talk to computers :)
I am writing blog articles for weeks now. Even with gpt - writing a perfect article of 4000 words takes several days, including links, formatting and pictures.