
Mail-in-a-box
Mailu
Modoboa
iRedMail
Roundcube
Poste.io
WildDuck
An open source mailserver suite.

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, mailcow seems to be a lot more popular than Cert Decoder. While we know about 88 links to mailcow, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
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| Website | mailcow.email | certdecoder.com |
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| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of mailcow 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 mailcow yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Install a mail server on Linux in 10 minutes - docker, docker-compose, mailcow
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 mailcow 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 mailcow 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.


Mailcow also provides the necessary communication standards, integration with anti-virus software, anti-spam, firewall, etc. Furthermore, Mailcow stores the data on a hidden server somewhere in Germany and they have a...
mailcow.github.io/mailcow-dockerized-docs The integrated mailcow UI allows administrative work on your mail server instance as well as separated domain administrator and mailbox user access. Mailcow forum. Gitrepo.
MailCow is open-source docker based email server suite. It is a collection of containers linked in one bridged network. Each container represent a single application, such as Dovecot, Memcached, MySQL, PHP, Postfix,...
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.


I went with Mailcow — it's a dockerized mail server suite that bundles Postfix, Dovecot, Rspamd, SOGo, and a web UI. There are other solid options like Mail-in-a-Box or rolling your own with Postfix + Dovecot, but Mailcow hits the sweet... - Source: dev.to / 5 months ago
> Wow... Having just gone through a 20+ hour byzantine nightmare of setting up postfix & dovecot Did you do this by hand / manually, or use a 'pre-canned' solution like: * https://mailcow.email * https://workaround.org. - Source: Hacker News / over 1 year ago
I've been running mailcow for a long time to _receive_ mail. Sending was hit and miss. For a long time I could relay through my ISP, but that got me into delivery problems as well. Now I've been relaying through Mail.baby/Interserver for... - Source: Hacker News / over 1 year 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 mailcow 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.
Compare Mail-in-a-box to mailcow or Cert Decoder:

Mailu is a simple yet full-featured mail server as a set of Docker images.
Compare Mailu to mailcow or Cert Decoder:

Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface.
Compare Modoboa to mailcow or Cert Decoder:

A fully fledged, free email server solution, an open source project (GPL v2).
Compare iRedMail to mailcow or Cert Decoder:


Full featured email server built in docker with free plan.
Compare Poste.io to mailcow or Cert Decoder: