Voice mail is too often used by windbags to hear themselves talk instead of getting to the point. In protest of those that seek to waste your time and mine on unnecessary formalities, I purposely don't leave nor listen to any voicemail. Period. It's just too slow and infringes on other people's time, like that step uncle everyone always dreads seeing at the holidays.

Instead, send a very short email with the content in the title and <EOM>. You're done.

(And no, Google Voice transcription isn't good enough.)