Not sure if something is going on at Google, but was just testing a new notification and found that my Gmail wasn’t working either. Gave the “tls error” message. Tried several changes and no joy. Changed to using the Use Default (not Gmail)and it’s working now. Mine was working with Gmail as late as 2-18-2026.

18 hours ago, BCreekDave said:

Not sure if something is going on at Google, but was just testing a new notification and found that my Gmail wasn’t working either. Gave the “tls error” message. Tried several changes and no joy. Changed to using the Use Default (not Gmail)and it’s working now. Mine was working with Gmail as late as 2-18-2026.

I am now getting the same error (using a Gmail account). The last time mine worked was 7:30am PST on Monday, Feb 23.

@BCreekDave and @Ross no issues running a test message or triggering a program notification using Gmail settings that I've had for many, many years. I don't have a regularly scheduled notification setup so just based on testing now things worked as expected. Make sure you are not sending a lot of messages (not sure what would be "a lot") perhaps Gmail is blocking too many attempts to send notifications.

Be sure you've setup in accordance to the wiki information:

https://wiki.universal-devices.com/ISY994:Configure_Mail_Server_Settings#Configuring_for_Use_with_gmail

Be sure that your timeout setting is high.

3 hours ago, Geddy said:

@BCreekDave and @Ross no issues running a test message or triggering a program notification using Gmail settings that I've had for many, many years. I don't have a regularly scheduled notification setup so just based on testing now things worked as expected. Make sure you are not sending a lot of messages (not sure what would be "a lot") perhaps Gmail is blocking too many attempts to send notifications.

Be sure you've setup in accordance to the wiki information:

https://wiki.universal-devices.com/ISY994:Configure_Mail_Server_Settings#Configuring_for_Use_with_gmail

Be sure that your timeout setting is high.

Did the settings just as in the wiki. No good. I send from a gmail box that only had 3 messages sent in the last week, so definitely not overloading that. It still works from the Outlook client sending-receiving, so the account is good.

I went to the Gmail forums and others are reporting issues from other clients, so I don’t think it’s just UDI. I would be checking your setup often as my suspicion is yours will start to fail soon. Google is jacking around with stuff and not admitting to it.