SiteGround offers and recommends phpList for mass mail sending on the shared servers. PhpList can be found and installed from your cPanel > Softaculous > Mails.
There is a 400 e-mails per hour limitation, so this is the maximum number of emails that you can send in an hour. If the needs of your hosting account exceed this limit you should consider ordering a dedicated solution.
Setting up your email is easy when you have the right host by your side. If you need a reliable partner to help you resolve email issues and provide expert support, check out our email hosting services.
