Rated 4 out of 5 stars

After plugin was updated to v6.1 (2013-10-13), it began to damage the letters with utf-8 subject.
For example

Original subject:
Subject: =?UTF-8?B?0YLQtdGB0YI=?=

After plugin applied (dash sign has added to the end of original subject)
Subject: тест-

Moreover, not only the email header is damaged, but also the email body is damaged.
enca states that character set of modified e-mail is 'Doubly-encoded to UTF-8 from ISO-8859-5'.
Thus text messages in modified emails are completely losts.

Be careful when using the new version of this plugin.

UPD This happens only when 'Only local changes' is unactive.

Léirmheas ar leagan níos sine den bhreiseán seo (6.1).