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Buy and sell ad space in email newsletters

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Project Euler is a series of challenging mathematical/computer programming problems that will...

Which is more popular?
Based on our record, Project Euler seems to be a lot more popular than LetterWell. While we know about 415 links to Project Euler, we've tracked only 7 mentions of LetterWell.
Website, pricing, platforms and company facts side by side.
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Letterwell is a platform to buy and sell advertising space in newsletter emails. We provide a secure, thoroughly vetted marketplace to connect advertisers with newsletter owners.
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Project Euler Challenges 1–4 - Coding Challenges with Florin
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Project Euler provides a large collection of challenges in the domain of computer science and mathematics. The challenges typically involve writing a small program to figure out the solution to a clever mathematical...
If you are studying algorithms and computer programming, chances are you’ve heard of Project Euler. A collection of mathematical problems made for problem solvers who are interested to combine mathematics and...
Recommendations tracked on public social media and blogs since March 2021.


Do you guys have any feedback about https://letterwell.co allowing to find sponsors? I would be interested to know if it's effectively used by some newsletter creators. Source: almost 5 years ago
I haven't found one for larger newsletters, would be a great resource.. I know of some sites that allow newsletter owners to sign-up to find advertisers/sponsors: https://store.tryletterhead.com/ and https://letterwell.co/. Source: about 5 years ago
Hey, I'm looking for newsletters where I can advertise my website and I wanted to ask if you know cool publishers who offer this in their newsletters? (something different from letterwell.co) Thanks in advance! Source: about 5 years ago
Let's hope this is going to help me solve some more Project Euler [1] problems! [1] https://projecteuler.net/. - Source: Hacker News / 4 months ago
Https://projecteuler.net/ for "Thinker" brain food. (it still has the issue of not being a pragmatic use of time, but there are plenty interesting enough questions which it at least helps). - Source: Hacker News / 7 months ago
I have a Project Euler (https://projecteuler.net/) account. Though I do not register at all on the leader board I will sometimes work obsessively on a problem just to make one of the level icons light up for me. There is not really... - Source: Hacker News / 9 months ago
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