Thanks for your posts. There is no one-shot solution for general filtering applications so playing around with AVG function block would be the approach I would recommend. There are also some filters which can be used - low-pass, band-pass, and spike.
@mtomek Hi Michal,
thank you for sharing your findings with the community.
Google uses more secure version of TLS which does not support the SMTP function block. Seznam apparently didn't upgrade the security yet.