There is a long Google forum wherein several other users (including those who specifically want to check voicemails in their email) complain they can't listen to .WAV files; instead, they get an error message. I would venture to guess that Android will fix this at some point; but, in the mean time, I want to listen to my voicemails from my HTC Droid email!
Here's a Third Party Work-Around
- Go to PhoneConvert.com and follow the sign up process for a free account.
- Login to PhoneConvert.com and ensure that your "Send-To" email address(es) are where you'd like your mp4 voicemails sent.
- Check the confirmation email that PhoneConvert sent you In the email, PhoneConvert specifies your unique email address. It will look something like Name@iphoneconvert.com. Copy the email address.
- Login to my.OnSIP and click on the Settings symbol (upper right corner). Click on Call Features and replace your email address with your unique Phoneconvert email address. Click Save.
After you have set this up, your voicemails will be sent as mp4 attachments from PhoneConvert. You can also login to PhoneConvert Settings and change various preferences, including voicemail attachment naming conventions, email subject, and even attachment file format (You can change to mp3 for in-line listening in GMail). Also, check out their donation settings to decrease any delay time in conversion, though I personally found it to be just a few minutes.