Maildrop is a service that provides free, disposable email addresses to use when signing up for new websites or apps. These mailboxes are designed to be temporary and transient. A Maildrop inbox can hold at most 10 messages, and an inbox that doesn't receive a message within 24 hours is automatically cleared. No attachments are allowed and messages larger than 100KiB will be discarded. Per the Maildrop "How It Works" page, the service is designed to provide "no security" and "little to no privacy." Maildrop's front page gives a number of example uses for their disposable mailboxes. The Maildrop service works in any modern browser. Maildrop is a free software with source code available on GitHub under the MIT license. Self-hosting instructions and hardware requirements are included in the Maildrop GitHub repository.