Mailbox Money is the ninth official mixtape by American rapper Nipsey Hussle. The mixtape was released as a free digital download on December 31, 2014, on mixtape hosting websites. It was also released in a limited first edition of 100 copies for $1,000 each including other incentives via his All Money In record label, which followed-up Crenshaw, that was sold under the same schema but rather 1,000 copies for $100. The mixtape features production by DJ Mustard, 1500 or Nothin', Hit-Boy, DJ Khalil, Ralo, Wizzo and Jiggy Hendrix, among others. Guest appearances on the mixtape came from Rick Ross, Dom Kennedy, K Camp, Trae Tha Truth, Buddy and many others. The mixtape was supported by the singles "A Hunnit A Show" featuring Rick Ross, "Between Us" featuring K Camp, "Where Yo Money At", "Count Up That Loot", and "50 Niggaz".

After releasing Crenshaw, October 2013, Nipsey quickly diverted the critical acclaim and success towards his Crenshaw Tour. Where he went on a 31-city trek, which started on January 9, 2014, and ended on February 13, 2014. While on his tour, Nipsey Hussle also released a plethora of songs which were considered freebies that were eventually added onto the 'Mailbox Money' project, such as "Count Up That Loot", "Between Us", "Be Here For A While", and "Where Yo Money At".

Upon the end of his tour, Nipsey created the idea to "Mailbox Money", after reading an article from the EzineArticles, to which describes the details of passive income and equity. From there, he emulated the same idea for his follow-up project, and announced that it would be released some time in December.

On December 29, 2014, he revealed the track list for Mailbox Money, which contained guest appearances from Rick Ross, Dom Kennedy, Trae Tha Truth, Buddy, J. Stone, K Camp, GI Joe, Pacman, Conrad, and Vernardo. Production was handled by, DJ Mustard, 1500 or Nothin', Hit-Boy, DJ Khalil, Ralo, Wizzo and Jiggy Hendrix, among others.

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