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Use this program to "Unspam" your mailbox(es).

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, SpamAssassin should be more popular than Cert Decoder. It has been mentioned 7 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | spamassassin.apache.org | certdecoder.com |
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| Platforms | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of SpamAssassin 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
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
spamassassin antispam - redhat
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing SpamAssassin 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 SpamAssassin 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.


Apache SpamAssassin returns a spam score and performs tests to check if the email is likely spam. - Source: dev.to / over 1 year ago
Apache SpamAssassin is an open-source spam detection platform maintained by the Apache Software Foundation, which is a widely used tool for many email clients and email filtering tools to classify messages as spam. - Source: dev.to / over 1 year ago
Apache SpamAssassin is a widely used tool for many email clients and email filtering tools to classify messages as spam. In this post, we’ll explore how to leverage SpamAssassin to validate if your email will be marked as spam and why... - Source: dev.to / 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
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