This is vital when outside recipients doesn't understand english language.

I do not completely agree with Dom H. request and comment.

Rather than having to select the recipient's language at the sending of the message, why not provide the option to memorize it in the contact's card ?

Sending a message from Protonmail to a gmail or yahoo e-mail is not non-sense. Why not considering to promote Protonmail to gmail or yahoo users, when the ignore the existence of it ? Rather then keeping the use of your old unsafe e-mail addresses.

I also think the password should be created by the recipient and the e-mail should be open only from the destination e-mail (forwarding should deactivate access to the e-mail content). I think that the password CAN'T be delivered separately and CAN'T be provided by the sender. That is not a secure practice. The e-mail's content (if forwarded) can be opened from any email: this reduces the security.

Definitely! - Please feel free to contact me if want a language file in Cymraeg, and I will what I can do.

Many external users don't speak or understand english, so when they receive the Protonmail encrypted email notification, many of them are tempted to ignore it.
I'm a french guy, and most of my contacts don't speak english, so even "decrypt" (in fact, translate) the english email notification is difficult for them !
Same thing for the "online" message, once recipient has entered the password to access the message, the web page containing the message is in english, it would be great that this page appears in the language selected at the moment the message was sent.
... because using Protonmail to send message in a language that recipient does not understand, or sending an uncrypted message to a "gmail" or "yahoo" recipient is really a non-sense !
So, for a convenient use of Protonmail, I hope to see this feature soon :-) - Thanks

Hi protonmail team, I know you are busy like hell but there is one thing that bothers me a bit. If you send an encrypted mail to non protonmail users there comes up a standard text en english that the recipient has recieved a encrypted mail from xxxx with a link to click on to read the message. I expierienced that that mails will not be opened from the people because the fear to get a virus or something or simply the think it is a spam mail. Could it be possible that you can manage to put a choice for a standart or personlized message in?

It will be fine, if one can change the language in the encrypted mail to non-proton-users, depending on the language of the recipient, i.e. German

It would be useful and very simple as far as I know to add the possiblity to choose the language of the outcoing encrypted email (you have received a secure message....).
I sometimes send emails to people whose English is not very good so it would be nice if people can receive the notification in their own language.
I have seen this in other secure email services

@protonuser - Actually, it doesn't reduce the privacy/security of PM. What if the receiving party doesn't understand English, and just throws the mail in the bin/spam? Or you're not able to communicate in a different manner with that party? Sure, I agree with you in some way, but that would only work for close friends or relatives whom you've already told what its about....and, btw, there is no need to put private data about yourself in the notification, maybe just your name, or maybe you already chose to display your name....

I fully support Milos' feature request: I would LIKE to be able to customize the email too, and would NEED to be able to do so in Dutch. Some of my family/friends/acqaintances only understand Dutch well enough, and most would ignore any English ProtonMail encryption message completely.

Yes, I would like to be able to have a DEFAULT customized text for the notification email, AND be able to override that default on a per email/recipient basis.

I do understand the sentiment of the other commenters about privacy reduction, but in the end that is the choice of the ProtonMail user, isn't it. As for the suggested "solution" of offline contact about one's ProtonMail account, this totally goes against the ease and swiftness of "quickly emailing somebody". And informing others through regular email totally goes against the reason for using ProtonMail in the first place: privacy and security.

I agree with the comment below, it would be advisible to notify the non-proton user offline. You have to communicate him/her the password anyway.

Identifying sender specific information in the PM encrypted message notification e-mail would reduce the privacy / security of PM. The solution to avoid non-PM users in treating the PM notification as spam or suspect e-mail would be to manually notify them outside of PM via regular e-mail that you have a new Proton e-mail address and explain the required procedure to decrypt the e-mail, plus supply them with their assigned password to use from thereon.

Custom Encrypted Outside Email Message

Multilingual Encryption Message