I also use the Gmail dynamic aliases as it is also included for my Runbox email account with my domain.
So, if I've firstname.lastname@runbox.com and I send an email to firstname.lastname+Alias@runbox.com it will be directly redirected to firstname.lastname@runbox.com but with the email including the alias in the header, so I'm able to clean this message with filters if they use it for spam purposes.
I also use the Gmail dynamic aliases as it is also included for my Runbox email account with my domain.
So, if I've firstname.lastname@runbox.com and I send an email to firstname.lastname+Alias@runbox.com it will be directly redirected to firstname.lastname@runbox.com but with the email including the alias in the header, so I'm able to clean this message with filters if they use it for spam purposes.