
MailChimp
MailerLite
GetResponse
SendPulse
Brevo
Publicate
Listmonk
Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES

JSONFormatter.org
Code Beautify JSON Validator
FreeFormatter
CyberChef
IT Tools
CodeBeautify
CodeSwissKnife
55 free formatters, converters, generators, and reference tools for developers — JSON, Base64, JWT, regex, hashes, subnets. Nothing you paste is ever uploaded.

Which is more popular?
Based on our record, Sendy seems to be more popular. It has been mentioned 45 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | sendy.co | whitekit.dev |
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| Company | Startup from Singapore | — |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Sendy yet.
WhiteKit brings together 55 developer tools in one place: formatters (JSON, XML, SQL, YAML), converters, security utilities (JWT, hashing, encoding), network calculators, and text tools. Everything runs 100% client-side. Your data never leaves your device, so you can safely paste API keys,...
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
Sendy is particularly recommended for small to medium-sized businesses that have a tech-savvy team capable of handling hosting requirements, as well as those who are looking for a low-cost solution to send bulk emails efficiently.
No analysis of WhiteKit.dev yet.
Walkthroughs and reviews on video.
Email Marketing With Sendy - Review & Tutorial
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


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


💸 cheapest Sendy: For a one-time fee, you can install the Sendy software on your own server and then affordably deliver emails via Amazon SES.
Separately, been keeping a list of Mailchimp alternatives. Sendfox works pretty well, and I plan to try out Sendy sometime soon.
Once you install Sendy on your own server, you’ll connect to Amazon SES to send the actual emails, which costs just $0.0001 per email (maybe an easier way to look at that is $1 per 10,000 emails). Plus, there’s no...
We have no reviews of WhiteKit.dev yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


"Preferably using shadcn/react/supabase. I don't want to reinvent the wheel here." Respectfully, you don't need supabase for a landing page with waitlist especially when you don't want to reinvest the wheel. You have several options: 1.... - Source: Hacker News / over 1 year ago
What about https://sendy.co -- 1 million is about $100. - Source: Hacker News / almost 2 years ago
You can use https://listmonk.app or https://sendy.co and use a provider lke SES under the hood. - Source: Hacker News / about 2 years ago
Tracking WhiteKit.dev since Aug 2026.
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Affordable Email Marketing Software. Get all features (Segmentation, Automation, A/B testing) for up to 1,000 subscribers & send unlimited emails for free!
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Code Beauty’s JSON Validator or JSON Lint is easy to use tool to copy, paste and validate JSON data.
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Email marketing from GetResponse. Send email newsletters, campaigns, online surveys and follow-up autoresponders. Simple, easy interface. FREE sign up.
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Freeformatter is a platform that contains free online tools for developers, including formatters (json, html, xml, sql, etc.), minifiers (css, javascript), compactors, validators, and much more.
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