Our existing workflows that trigger automated email alerts have started failing. It started in the last day and only affects gmail and msn addresses from a contact column.
The failure message is, "Due to a recent automation permission or sharing change, the following people aren't receiving alerts from your workflow". However, no such changes were made.
I confirmed the sheet permissions are already set to unrestricted, to allow non-company email addresses. To further test, I created a new fresh sheet and the triggered email alerts come through normally when I use my work email address, and my personal (non-gmail) address, but fail when I use a gmail address.
I didn't see any problems posted on the SmartSheet server status page. Are there any known issues that would stop an automated email notification from sending to gmail or msn, but allow other addresses?