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Leftium commented on Show HN: Smart email filters to unfuck your email   unfuck.email... · Posted by u/kilroy123
apparent · a day ago
Thanks to LLMs, many of the spam messages I receive have synonyms for unsubscribe, instead of the magic word itself. I once talked to a B2B outreach company, and they touted the fact that they basically rewrite all of their emails in minor ways to evade spam filters. They pitched it as "personalization" but in reality it was just spam filter dodging.
Leftium · a day ago
I would say the "unsubscribe" rule still catches about 80-90% of the SPAM for me. (I thought the US had a law that any promotional email must include a link with "unsubscribe")

Then my "uninteresting sender" rules catch most of the remaining SPAM/uninteresting emails. These are accounts like "noreply" that automated emails often come from.

I had to set up a very special rule for a single company because they successfully dodged my other filters but always started with "Because you're a valued Vanguard client, we thought you'd be interested in this information."

More details: https://blog.leftium.com/2023/11/automatic-inbox-cleanup-wit...

Leftium commented on Show HN: Smart email filters to unfuck your email   unfuck.email... · Posted by u/kilroy123
edweis · a day ago
Easy way to do this: search for the word "unsubscribe" in your email and delete all of them.

I did this 4 years ago on my personal email address and I never had to recover any email.

Leftium · a day ago
I made a filter so the "unsubscribe" emails never reach my inbox (and thus never trigger a new mail notification)

The emails are not deleted; they are labeled and skip the inbox.

https://blog.leftium.com/2023/11/automatic-inbox-cleanup-wit...

Leftium commented on Show HN: Whispering – Open-source, local-first dictation you can trust   github.com/epicenter-so/e... · Posted by u/braden-w
Aachen · 9 days ago
Wait, I'm confused. The text here says all data remains on device and emphasises how much you can trust that, that you're obsessed with local-first software, etc. Clicking on the demo video, step one is... configuring access tokens for external services? Are the services shown at 0:21 (Groq, OpenAI, Antrophic, Google, ElevenLabs) doing the actual transcription, listening to everything I say, and is only the resulting text that they give us subject to "it all stays on your device"? Because that's not at all what I expected after reading this description
Leftium · 9 days ago
The local transcription feature via whisper.cpp was just released 2 hours ago: https://github.com/epicenter-so/epicenter/releases/tag/v7.3....
Leftium commented on Ask HN: In which programming language is it better to make your own language?    · Posted by u/Forgret
Leftium · 17 days ago
Lisp is often used to create domain-specific languages.

- Lisp S-expressions are powerful because they represent both code and data. So data is code; code is data: it is very simple to augment the language.

- Lisp S-expression syntax conveniently mirrors the tree shape of Abstract Syntax Trees.

F# also supports macros and meta-programming: futures (F# version of async/await) were added to existing versions of F#. No need for a new language runtime!

If JS had that level of meta-programming, I wouldn't have to wait for pattern-matching support! And pipes!

Leftium commented on Show HN: The current sky at your approximate location, as a CSS gradient   sky.dlazaro.ca... · Posted by u/dlazaro
mushufasa · 18 days ago
would love this to be a desktop background -- linux or macOS
Leftium · 17 days ago
I use a built-in MacOS wallpaper called Solar Gradients[1]

It looks very similar!

[1]: https://youtu.be/0mf8YaWN5qE?t=1m21s

Leftium commented on Comparison Between Sync Engines    · Posted by u/belchiorb
Leftium · 25 days ago
Scott Tolinski is sort of an expert with sync engines, and he just compared several solutions here: https://youtu.be/1uVR5X7HpI8
Leftium commented on Comparison Between Sync Engines    · Posted by u/belchiorb
Leftium · a month ago
Best Realtime Sync Engine (2024): https://robotist.com/realtime-sync-engine

Theo Browne (T3) detailed the different methods he used to sync user data for https://t3.chat: https://youtu.be/3gVBjTMS8FE

He looked into several solutions like https://zero.rocicorp.dev, but decided to roll his own.

He finally decided to let Convex handle sync for him:

- https://youtu.be/xFVh9beupwo

- https://youtu.be/gZ4Tdwz1L7k

Leftium commented on Ask HN: How do you build B2B software that pays living expenses?    · Posted by u/architectofsw
Leftium · a month ago
This successful B2B SaaS was (originally) developed by a single person who didn't know how to code (without any investors): https://www.paperlesspipeline.com

The key insight was: marketing was the most important part. And the most important part of marketing was finding (and validating) a painful problem businesses would pay for.

- It is important to talk directly with real prospects: real business owners. You can use stuff like Gartner reports to help find a niche, but it is essential to talk directly with real people who have the problem.

- Validation involved getting a prepayment even though the software did not exist. Not even a design. Prepayment got the initial 10 or so "champions" a lifetime discount and personal input into how the app would be developed.

- The prepayments served as a much stronger validation than a verbal "yes." Also it funded development of the initial version. The 10 champions' input also made the initial version much better.

- Generally, a "painful" problem will result in at least a 10X ROI (additional revenue, saved expenses, saved time, etc). If you describe the painful problem better than the prospects themselves can, they will assume you have the solution and jump straight to "how do I pay you? (sign up)"

- The market research math is roughly: find a niche with at least 10,000 prospects. Plan to capture 1% of this market, or 100 customers. If you can find a painful problem whose solution is worth paying $100-200/month, you should be able to achieve $80K profit/year.

(The Paperless Pipeline origin story is slightly different. For example, there was really only a single true "champion." But this champion was the happy customer of another SaaS that was built with the same process. This champion kept asking for this other SaaS that turned into PaperlessPipeline.)

---

So I think the resources below provide the most risk-free (highest chance of success) way of achieving your goal (I think YC targets "unicorns" with much higher potential ROI with the understanding at least 90% will fail):

- The founder of Paperless Pipeline has been teaching his method: https://startfromzero.com (Specifically "Idea Extraction" is the most important part)

- Apparently he is going to start a YouTube channel where he teaches his stuff for free.

- https://30x500.com is another great course that teaches a similar method, and more geared toward engineer-types.

- https://shop.stackingthebricks.com: Kind of like the a-la-carte version of the 30x500. The two most valuable parts are probably "Sales Safari" and "Just F*ckin Ship."

Leftium commented on Ask HN: What are you working on? (July 2025)    · Posted by u/david927
Leftium · a month ago
Veneer: a thin facade over Google Forms/Sheets (https://github.com/Leftium/veneer)

Some samples:

- https://veneer.leftium.com/v/s.1o5t26He2DzTweYeleXOGiDjlU4Jk...

- https://veneer.leftium.com/v/s.1pk4C9jFI02CnZaxo9obsD4oAmLla...

Vercel is ending support for Node v18. Instead of updating my old app, I decided to finish the rewrite of the better version. The old version currently powers this site: https://viviblues.com

Compare to the new version:

- https://viviblues.com/pretty/sheet?u=https://docs.google.com...

- https://viviblues.com/pretty/sheet?u=https://docs.google.com...

u/Leftium

KarmaCake day1342August 24, 2010
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