
Mailjoy
I hate mailto
Felt for iPhone
mailgo
Sendy
The Simple Postcard
RealMailers
Enhance your mailto links with a convenient user interface.

JSON Formatter & Validator
DevTools Advanced
JSONFormatter.org
FreeFormatter
JSON Editor Online
SmallDevTools
TheDevTools
FOSS tools for developers
Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | mailtoui.com | developertools.tech |
| Pricing | — | |
| 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.


No analysis of MailtoUI.js yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


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Delightfully easy direct mail marketing. A DIY direct mail tool created for marketing and growth teams. Design, mail & track personalized direct mail postcards and letters. Digital marketers use Mailjoy to send data-driven mail campaigns.
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The JSON Formatter was created to help with debugging.
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Stop websites from opening your email client.
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A collection of developer tools in one place in your browser
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Handwritten cards for the modern world
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Online JSON Formatter and JSON Validator will format JSON data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON
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