
mailcow
Mail-in-a-box
Modoboa
WildDuck
Emails
Postfix Admin
OX Open-Xchange
Mailu is a simple yet full-featured mail server as a set of Docker images.

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, Mailu should be more popular than Cert Decoder. It has been mentioned 6 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | mailu.io | certdecoder.com |
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In their own words, as submitted to SaaSHub.


No description of Mailu 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.


No analysis of Mailu yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
From zero to full mail server in 20 minutes with Mailu Docker images!
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 Mailu 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 Mailu and Cert Decoder. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Mailu To be frank, this one I liked very much. It can be easy as to run 3 to 5 commands if you docker and docker-compose installed already. As you might have noticed, above link to mailu itself is pointing to the...
We have no reviews of Cert Decoder yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Self hosted: I use https://mailu.io/2.0/ and it's awesome because it's easy to install and back up, it's lightweight and has all the features I need in a self hosted email solution. I don't send emails directly from my server though... Source: almost 3 years ago
I just used Mailu[https://mailu.io/2.0/] to setup my email server last week for my domain configured with cloudflare too. It took a while, but I was able to configure it successfully. Source: about 3 years ago
I thought about using this docker container for email https://mailu.io/2.0/ , I think most of the work is already done there. Source: over 3 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
When comparing Mailu and Cert Decoder, you can also consider the following products.


Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.
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Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface.
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Simple, easy and secure mail server with a convenient and simple interface.
Compare Emails to Mailu or Cert Decoder:

Postfix Admin is a web based interface used to manage mailboxes, virtual domains and aliases.
Compare Postfix Admin to Mailu or Cert Decoder: