Email wont send

I updated my email password today and I am unable to change it in the M system and send emails from the M system

This is the error I get

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required

Have you read these Guides:

Have you searched the forum for the dozens of topics on this question in the last month?

Did you read the latest issue of the Manager Product Updates newsletter that just came out?

I have followed the guides and it still wont work

How do I get the newest updates

The same place you got the original program. See Install or update desktop edition on Windows | Manager or Install or update desktop edition on macOS | Manager.

You say you have followed the Guides, but you haven’t posted any of the information they ask for. No one can help if you don’t provide information.

I have just updated and the problem is still happening

The Email transactions and reports link had a link to
Google Gmail set up guide. How did you go with that? The error indicate you have not set up google to support email from Manager