Advantages of Let's Encrypt instead of a SSL certificates with a cost

Dear all,

I would like to know what is the difference between Let’s Encrypt SSL certificate which is free and an SSL certificate (for example to Network Solution) with a cost per year ?

I am hesitating to start using Let’s encrypt, but as it is free I am a little bit worried, as this certificate will be used for our main ERP in the cloud.

Thank you in advance for your help.



Hi @pizzolanteg

one difference: Letsencrypt certificates are only 90 days valid, so you should use a client to automate the renew. Typical after 60 - 85 days. Check

If you buy a certificate, the validation is typical done by sending a mail to hostmaster@yourdomain (or one of some other special mail addresses) with a long link. And you have to upload a CSR manual. Then the public key + signature is sent back via mail, so you have to install the certificate manual.

The "Guarantee"? I've never understood that.

Letsencrypt only offers domain validated certificate, no OV or EV.

My personal position: Domain validated certificates are enough.

I gave my opinions on this at

I've been looking, and have yet to see an instance where one of these "guarantees" actually paid anything--probably because the set of circumstances under which they would pay is so incredibly narrow. (edit: see also:

Other than the validity period already mentioned (which won't be an issue in a properly-setup installation, because the cert would renew automatically), Let's Encrypt doesn't issue EV certs. If you value those, you probably shouldn't (really), but if you still do, you'd need to use a different CA.

Dear all,

Thank you for all your information ! Very helpful.


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