E-mail notifications need help

Everytime I post and someone replys I get an E-mail.My E-mail is very touchy it jams up all the time.I just went into my options section and changed the E-mail notiications to No will this stop this or is there something else I need to do.If I get alot of E-mail it ends up jamming and I get stuck with a ton of mail I can't get rid of or read.