
CodePen
replit
JSFiddle
GitHub
StackBlitz
VS Code
JS Bin
Online playground for React

ProtonMail
Tutanota
Gmail
Zoho Mail
Microsoft Outlook
FastMail
eclipso Mail Europe
Web- and IMAP-based email service. 2GB cost 1€/month.

Which is more popular?
Based on our record, CodeSandbox seems to be a lot more popular than Posteo. While we know about 313 links to CodeSandbox, we've tracked only 16 mentions of Posteo.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | codesandbox.io | posteo.de |
| Pricing | — | |
| Company | Startup from The Netherlands · 1 - 9 employees · 2017 | — |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Individuals seeking a privacy-focused, ad-free email service; users who prioritize environmentally friendly companies; those who prefer a straightforward and reliable email provider with robust security features.
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using CodeSandbox and Posteo. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Codesandbox is an online code editor and prototyping tool that makes creating and sharing web apps faster. Codesandbox: Online code editor and ide for rapid web development.
CodeSandbox can be thought of as a much more powerful and complete take on JSFiddle. True to its name, CodeSandbox provides a complete code editor experience and a sandboxed environment for front-end development.
Posteo is a privacy-focused, open-source email service based in Germany. It offers an inbox with 2GB of storage, a calendar app, and an address book all in one. Posteo is mainly focused on email privacy, message...
In a major blow to email privacy, a court ruled in 2019 that the private email provider Posteo can be forced to log user IP addresses for government agencies. Of course, this paves the way to even more logging and the...
Use Fastmail, Posteo, Mailbox, or any similar service where you actually pay $1-$3 per month and in return get a completely ad-free spam-free wonderful email experience.
Recommendations tracked on public social media and blogs since March 2021.


To begin, you can start creating your own react app using the command line or can directly go to CodeSandbox if you want to skip using the command line which is faster. CodeSandbox is an online code editor and prototype tool that speeds... - Source: dev.to / 4 months ago
To begin, you can create a react app using the command line or any code editor (e.g., VSCode). You can also try using CodeSandbox as an online code editor that is simple to use and allows you to deploy your code. - Source: dev.to / 4 months ago
If you are in a rush to open unknown repos, use GitHub Codespaces or codesandbox with Copilot or another AI integration to analyze the repo for malicious intent and to run it in a safe environment. - Source: dev.to / 10 months ago
> Not sure where to look now. Maybe take a look at https://posteo.de/en. - Source: Hacker News / 12 months ago
Ah, whoops, based on that logo, I mistook this for a "Version 2" release of the venerable https://posteo.de/en What advantages does this have over just running RoundCube myself? The things listed on the pricing page seem fairly superficial. - Source: Hacker News / over 3 years ago
I have been using https://posteo.de/en from many years now. They are ad free, secure and an affordable alternative. Their web interface is poor but not a problem for me as I use email clients on all my devices. - Source: Hacker News / almost 4 years ago
When comparing CodeSandbox and Posteo, you can also consider the following products.


Secure email with absolutely no compromises. Get your free encrypted email account today.
Compare ProtonMail to CodeSandbox or Posteo:

Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.
Compare replit to CodeSandbox or Posteo:


Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
Compare JSFiddle to CodeSandbox or Posteo:

Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.
Compare Gmail to CodeSandbox or Posteo: