A creative chart from EmailTray visualizes the obstacles any email undergoes on its way to the Inbox. There are four checkpoints that any email has to pass successfully in order to land in the recipient's Inbox folder: Sender's Email Software >> Sender's ISP / Webmail Provider >> Recipient's Email Server >> Recipient's Email Software. No matter how "good" or "bad" your email is, it will have to go through all these obstacles anyway. Attachment size and file format restrictions, sender IP check, outbound messages per day limit and virus check – these are the possible reasons why your message might get blocked. This data visualization is brought to you by EmailTray, a smart email client for Windows and Android.