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Marcus Biel

@marcusbiel

Rockstar Dev turned into SaaS founder, working on Email Marketing for small businesses. Tweets: email marketing, startups, coffee & survival as a dad, ADHD, πŸ‡ΊπŸ‡¦ https://maildroppa.com

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26.11.2024
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Latest posts by Marcus Biel @marcusbiel

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.

05.03.2026 11:24 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Is it just my bubble or is the entire social media now exclusively talking about AI and the next secret best ever prompt πŸ€ͺ

22.02.2026 08:46 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

πŸš€ Maildroppa update is live

After 4 months of modernization focused on stability & clarity, we just shipped:

πŸ—£οΈ UI in 35 languages
🧩 Central Footer Builder
🌍 Subscriber-facing text language
πŸ” Undo / redo in automations

Built on a fully modernized codebase.
Feedback welcome πŸ’¬

02.02.2026 16:53 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

AI won’t kill SaaSβ€”it’ll kill trivial β€œAβ†’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.

16.02.2026 07:54 πŸ‘ 5 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

AI won’t kill SaaSβ€”it’ll kill trivial β€œAβ†’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.

16.02.2026 07:54 πŸ‘ 5 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

πŸš€ Maildroppa update is live

After 4 months of modernization focused on stability & clarity, we just shipped:

πŸ—£οΈ UI in 35 languages
🧩 Central Footer Builder
🌍 Subscriber-facing text language
πŸ” Undo / redo in automations

Built on a fully modernized codebase.
Feedback welcome πŸ’¬

02.02.2026 16:53 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Just learned about git bisect from Claude. Wow :)

29.12.2025 23:40 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Toxic customers ... 🀬

22.12.2025 11:33 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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πŸŽ‰ Just hit 1337 followers β€” call me 1337!

For the non-nerds:
πŸ’» 1 = L
πŸ’» 3 = E
πŸ’» 3 = E
πŸ’» 7 = T

That’s right… LEET, short for ELITE 😎

05.11.2025 08:08 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

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 misleadβ€”precise text wins.

05.11.2025 07:59 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Not sure how I did it.. but.. wohoooo! :)

22.10.2025 19:48 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

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?

21.10.2025 05:13 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
a cartoon character is holding a sign that says away . ALT: a cartoon character is holding a sign that says away .

Prospect: β€œMailchimp is too pricey. Do you have nonprofit pricing or pay‑as‑you‑go?”
Me: β€œYou can try all features for free.”

Prospect: β€œGreatβ€”can you do a 1:1 concierge demo instead?”

08.10.2025 09:04 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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I finally get to share: Maildroppa’s #zapier integration is live :) πŸš€ We’re even sitting next to Figma in the new apps feed πŸ™Œ Create/update subscribers, manage tags & segments, run searches & countsβ€”all for free.
zapier.com/apps/maildro...

12.09.2025 19:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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πŸš€ Early access: Maildroppa Γ— Zapier
Automate subscriber workflows (create/update, tags, segments) and trigger your campaigns via tags.
Want in? DM your Zapier email with β€œZAPIER”. Beta perks: priority support + setup templates.
#Zapier #EmailMarketing

08.09.2025 20:42 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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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.

21.08.2025 15:27 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

2-week verdict on Claude Max: gorgeous code 😍, zero context πŸ€ͺ.

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 worksβ€”and it’s far less of a yes-bot.

Back to GPT 🀠

03.07.2025 08:24 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Life is hard sometimes

25.06.2025 10:15 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

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 πŸ˜‹

15.06.2025 09:54 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

The article is one of my oldest worst btw πŸ™ˆ

14.06.2025 05:46 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Just received a cold email so bad it made me laugh and cry πŸ˜‚πŸ˜­

13.06.2025 05:40 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

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 πŸ€·β€β™‚οΈ

12.06.2025 06:13 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
Whoever said setting up Google Ads was β€œeasy” clearly never tried to… | Marcus Biel Whoever said setting up Google Ads was β€œeasy” clearly never tried to actually do it. First you need an ordinary Google account. Then you create a Google Ads account on top of that. Greatβ€”except nothin...

Running Google Ads with tracking? It takes FIVE separate Google accounts, all wired together. Absolute nightmare and an insult to marketers. Full rant β†’ www.linkedin.com/posts/marcus...

07.06.2025 21:12 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

πŸš€ 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

06.06.2025 07:05 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Small kids. They will make sure you reset every morning πŸ™ˆπŸ˜‚

10.05.2025 15:27 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Pope has been elected. Rumors say it will be a man πŸ™ˆ

08.05.2025 16:40 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Goodbye, my love, we had so many good years. Missing you.

08.05.2025 06:40 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Wohoooo :)

05.05.2025 21:35 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

You should rather learn Java and talk to computers :)

29.04.2025 05:10 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

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.

17.04.2025 19:07 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0