Hello,

When using the SMTP proxy with certificate to create a secure connection between itself and the email client, the proxy will support SMTPS (SMTP Implicit) but won't support SMTP STARTTLS (SMTP Explicit).

Some printers (and apps) only support SMTP STARTTLS as a way to create a secure connection. As an alternative solution, I'm using plain text SMTP between clients and proxy.

I think it would be a usefull feature to have SMTP STARTTLS available between SMTP clients and Email OAuth 2.0 Proxy.

Anyway, thanks for this great tool.