Sending SMS to groups via email -not working?

[sameyboy]

This is what i found in user manual for gvmax:
You can send SMS to groups of people. The grouping is defined by your Google Contacts groups. To do so simply send an email to {group}@mygvmax.appspotmail.com where {group} is the group name.

now i have a google voice contacts group named "Students"

so i tried send an email from my gmail email address to [e-mail]

and it failed to go through. I dont understand what iam doing wrong please help. Thanks.

[gvmax]

I might have a bug related to Upper case characters in group names, so try renaming your group to lowercase 'students'

Also send the email to {apiKey}[e-mail]. You get the {apiKey} from your GVMax account page.

Let me know if it works.