Last month, a Finnish court judged that using derogatory words in an email sent privately to the offended person counts as defamation.[1] When this was discussed in the Finnish Reddit [2], some found it unjust that it counts as defamation even though the message wasn't sent to third parties, but it is indeed how the law was written.

[1] https://www.iltalehti.fi/kotimaa/a/6c9a65fe-f706-449e-b0d9-1...

[2] https://old.reddit.com/r/Suomi/comments/1mv9usq