There are currently five messages in the Igbo language here:
https://en.wikipedia.org/wiki/Special:MassMessage?uselang=en-gb
They can be seen with message names here:
https://en.wikipedia.org/wiki/Special:AllMessages?prefix=massmessage-form&lang=en-gb
The messages are:
massmessage-form-page-message-section
massmessage-form-page-message-section-help
massmessage-form-page-subject-section
massmessage-form-page-subject-section-help
massmessage-form-subject-help
For example, massmessage-form-page-message-section says:
Krataafa no fa a yɛ de bɛkɔ sɛ nkratoɔ.
It should have been in British English, probably the default English message:
Use the form below to send messages to a specified list. All fields are required ([https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Extension:MassMessage more information]).
It was reported at https://en.wikipedia.org/wiki/Wikipedia:Village_pump_(technical)#Send_Mass_Message
Inspection of https://en.wikipedia.org/wiki/Special:AllMessages?prefix=massmessage&lang=en-gb&limit=500 shows a sixth non-English message which is not from the form:
massmessage-page-subject-empty