I use Hey.com which allows me to screen first time senders [1] and it works really well. This is in combination to a spam filter. [1] https://hey.com/features/

I use Hey.com which allows me to screen first time senders [1] and it works really well. This is in combination to a spam filter. [1] https://hey.com/features/the-screener/ https://hey.com/features/the-screener/