Authentication

legacy api — sunsets june 1, 2027 this page documents the original mailfloss api, which is being retired on june 1, 2027 new integrations should use the v1 api https //developers mailfloss com/quickstart all of your requests needs to be authenticated with your api key and passed in as a query parameter api key api keys can be generated and found in the mailfloss dashboard under the api section https //app mailfloss com/api https //app mailfloss com/api