@matthiasn/react-native-mailcore/examples/BasicExample/src/constants/Connection.js

React Native bindings for https://github.com/MailCore/mailcore2

export const TEST_IMAP_HOSTNAME = 'imap.gmail.com';
export const TEST_SMTP_HOSTNAME = 'smtp.gmail.com';
export const TEST_PORT_IMAP = 993;
export const TEST_PORT_STMP = 465;
export const TEST_USERNAME = 'user@gmail.com';
export const TEST_PASSWORD = 'password';