As TalkMusicBiz.com explains, you should use every opportunity you can to provide your fans with information, and a mailing list is an excellent way to do so. You can use your mailing list to let fans know when you'll be appearing live as well as offering music and links they can share with friends.
A promo kit is an assemblage of music and biographical information that, when well presented, can spark interest in your band. Artists House Music recommends keeping the kit simple and letting the content, including press clippings and music, do the talking for you. Another key for your press kit is researching the media outlet so you can address it to a specific person, not "to whom it may concern."
According to Vestman Mastering, a surefire way to get noticed is to play live shows frequently and contact local newspapers so reviewers will cover your shows. The company suggests that you create your own gigs -- such as setting up benefit concerts or parties -- if you have trouble finding gigs.
Many successful artists, such as Drake and Kanye West, have used the strategy of distributing their music free of charge. Distributing your music for free ensures that more people will hear it, because there is no monetary risk involved. If you don't charge for your music, your fans can share it easily, effectively marketing it for you.