If any aspects appear suspicious, ESPs automatically block your email from reaching the targeted inbox. When you send a message, email service providers (ESPs) look at the reputation of your email address and the content of the email message. Useful links Wikipedia Email Spam Definition Guide Why are my emails going to spam? These filtering systems are created to help users decrease the amount of unnecessary and promotional emails that they receive. It is also known as the 'Bulk Folder' or 'Junk Folder'. The spam folder is the storage space in your email account for unwanted emails or for emails that fail to reach your inbox and are flagged as spam by email service providers (ESPs). Spam (Bulk or Junk) Folder Definition - What is Spam (Bulk or Junk) Folder?