With the detailed new mail notifications, when more than one mail is received the notification says something like "2 new messages received in Inbox". When more than one account is configured, this is ambiguous.

Worse, if the received mails come from more than one account, the message can appear contradictory: "2 new messages received in Inbox. One new message received in Inbox."

My wish is for the message to disambiguate from which account the mails were received, when more than one account is configured.

Reproducible: Always

Steps to Reproduce:
1. Set up multiple email accounts
2. Enable detailed new mail notifications
3. Receive new emails from more than one account, within the same mail check
Actual Results:  
Notification pops up with text similar to the following:
"2 new messages received in Inbox. One new message received in Inbox."

Expected Results:  
Notification pops up with text similar to the following:
"2 new messages received in Inbox (Home). One new message received in Inbox (Work)."

Here I've suggested putting the account name in parentheses after the folder name, but you may have a better solution.