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Self-hosted open-source Mailchimp clone

Decode and verify SSL/TLS certificates online. Extract X.509 details including issuer, validity, SAN, and fingerprint. Fast, secure, and browser-based.

Which is more popular?
Based on our record, Mailtrain should be more popular than Cert Decoder. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | mailtrain.org | certdecoder.com |
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| Platforms | — | |
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In their own words, as submitted to SaaSHub.


No description of Mailtrain yet.
Cert Decoder is a free online tool that helps you decode X.509 SSL/TLS certificates in PEM format. It instantly shows important information like the issuer, expiry date, SAN entries, and fingerprint. All data is processed locally in your browser, so nothing is ever sent or stored elsewhere.
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
Mailtrain is recommended for small to medium-sized businesses, developers, and organizations seeking a self-hosted email marketing solution. It is particularly suitable for those who have the technical expertise to manage and customize open-source software or those who want to keep their hosting in-house to ensure data privacy and minimize costs.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Review on the Austrains mailtrain pack
No Cert Decoder videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Mailtrain and Cert Decoder.
Cert Decoder's answer:
I built certdecoder.com over the weekend for my own needs. Sometimes in my work, I need to verify and check certificate details.
Cert Decoder's answer:
certdecoder.com was built using just JavaScript and HTML—simple, fast, and with all processing happening locally in your browser, so no certificate data is sent to any server
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Cert Decoder's answer:
Simple, fast, and reliable. Some similar tools can’t even decode basic certificates. I rigorously tested my tool with many real-world certificates and covered several edge cases where competitors fall short.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Share your experience with using Mailtrain and Cert Decoder. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Listmonk is fantastic -- I use it for the newsletter of my own blog and am amazed by how simple it was to set up and how easy it is to operate and use every time I send out a newsletter. Prior to Listmonk I used Mailtrain[0] and like... - Source: Hacker News / about 5 years ago
Never tried but have a look at Mosaico and GrapesJS. Both are open-sourced and used by Mailtrain. Source: over 5 years ago
Why? Because I built certdecoder.com and couldn’t find a decent place to submit it. So I said screw it — I’ll build my own. With blackjack and hookers. - Source: dev.to / over 1 year ago
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