Hi
There is a typo in the text "Note: The message is encrypted for the following User ID's / Keys:". In English the plural form does not have an apostrophe, also not for abbreviations. In this sentence you should write "IDs" rather than "ID's". See also https://en.wiktionary.org/wiki/ID#Noun
On another note, in this sentence "user" and "keys" should better be written in lower case.
A quick search finds more invalid uses of the apostrophe, see below. At least for English this is wrong.
Cheers,
Adi
$ rg "ID's\b"
package/keyRing.jsm
352: // pub key not valid (anymore)-> display all UID's
stdlib/openpgp-lib.js
48908: * Checks equality of Key ID's
lang/sv-SE/enigmail.properties
203:encryptKeysNote=OBS: meddelande krypteras med följande användar-ID's / Nycklar: %S
lang/sv-SE/enigmail.dtd
526:<!ENTITY enigmail.keyMan.manageUid.label "Hantera användar-ID's">
595:<!ENTITY enigmail.manageUidDlg.availableUid.label "Tillgängliga användar-ID's:">
lang/pt-BR/enigmail.properties
452:noKeyFound=Desculpe, não pude encontrar nenhuma resultado que atenda aos parâmetros de busca especificados.\nVerifique se os ID's de chave estão prefixados com \"0x\" (ex: 0xABCDEF12).
lang/gl/enigmail.properties
452:noKeyFound=Sentímolo, non se puido atopar ningunha chave que coincida cos criterios de busqueda especificados.\nOs ID's de chave deberían ter como prefixo \"0x\" (e.g. 0xABCDEF12).
package/cryptoAPI/gnupg-keylist.jsm
28:// field ID's of key list (as described in the doc/DETAILS file in the GnuPG distribution)
ui/content/enigmailCommon.js
85:// field ID's of key list (as described in the doc/DETAILS file in the GnuPG distribution)
ui/content/enigmailKeySelection.js
29:// field ID's of key list (as described in the doc/DETAILS file in the GnuPG distribution)
lang/lt/help/rulesEditor.html
29:
lang/zh-TW/help/rulesEditor.html
29:
lang/hr/help/rulesEditor.html
29:
lang/nl/help/rulesEditor.html
29:
lang/sq/help/rulesEditor.html
29:
lang/hu/help/rulesEditor.html
29:
lang/bg/help/rulesEditor.html
28:
lang/pt-BR/help/rulesEditor.html
15:Key ID's para utilizar para este destinatário
lang/tr/help/rulesEditor.html
29:
lang/ar/help/rulesEditor.html
28:
lang/ko/help/rulesEditor.html
29:
lang/gd/help/rulesEditor.html
29:
lang/gl/help/rulesEditor.html
20:
lang/nb-NO/help/rulesEditor.html
29:
lang/sk/help/rulesEditor.html
29:
ui/locale/en-US/enigmail.properties
208:encryptKeysNote=Note: The message is encrypted for the following User ID's / Keys: %S
ui/locale/en-US/help/rulesEditor.html
29:
Thanks for the hint. I only fixed English, and only where the text is displayed (i.e. not in JavaScript comments). I'm not maintaining the other languages (even if some help files are in English), and I don't know what the correct form for writing IDs would be in any case.