Advice Request What about these free private mails: mailfence and ctemplar?

Please provide comments and solutions that are helpful to the author of this topic.
Hey guys! With the last news about Protonmail and Tutanota (here and here), i found 2 free email providers that seems ok

Mailfence

and

Ctemplar

I found a few people talking about them but i lack information. I'd like your opinion if you don't mind ^^

GMX mail is another free Web based mail
 
I created a free Ctemplar account a month ago, I find it similar to ProtonMail.
ProtonMail has some extra privacy/security features when writing/sending emails (in the free version that is).

I have not used Ctemplar all that much yet, so I can't comment too much.