Exactly what I needed!

Converting from Blackberry (which has filters for emails) to iPhone and until now I could not find any way to have subject or sender specific alerts on the iPhone natively. Now with MailTones, I can turn off Incoming Email Sounds, and use Gmail filters to forward mail with specific subjects (ie "Urgent") or from specific senders to the MailTones address supplied . Voila I have lots of options re: sounds through iPhone Notifications! Have not used long enough to comment on reliability. As the type of messages I filter with Gmail this way are not particularly private, I am not too concerned about privacy issues. This may be an issue for some. It would be good if there was a setting in Gmail to forward only the Subject and Sender Address to MailTones without sending the text. Then this app would be perfect but otherwise I am happy with how it is working.

JevFam about MailTones - Pager Alerts for Email and Gmail