I'd think spammers would have caught on to that and would either start sending e-mail to nico@domain.com or nico+someotherdomainname@domain.com
You think spammers are people going through emails? It is all automated.
s/+.*@/@/g
I don't think that would work, something like /(.)\+.(@.\..)/g might
Well obviously it's automated. I didn't mean manually finding name+domain@mydomain.com e-mail addresses and manually editing them to just name@mydomain.com.
I also use the respective domainname but instead of my given name I generate a short random sequence with pwgen.