Hacktoberfest 2022 is a month-long global event that encourages developers to contribute to open-source projects, and Nylas is actively participating by inviting developers to share code samples using its API. Participants who have four changes accepted during the event can receive either a tree planted in their name or an official t-shirt, with registration open from September 26th. Nylas provides opportunities for developers to contribute by addressing issues or creating new ones, and supports them through its repository and developer advocates. Developers can access resources such as the Nylas documentation, blog, and YouTube channel to aid their participation, and are encouraged to engage with the community by creating pull requests and responding to feedback. The event serves as a platform for developers to explore building communication features with Nylas, fostering collaboration and innovation within the community.