App passwords in Nylas
App passwords (sometimes called "app-specific passwords") are randomly generated passwords that provide a secure way for end-users to authenticate with third parties such as Nylas, without using their regular account password.
Because every provider has a different way of creating an app password, you must direct your end user to their provider's app password tool so they can create one. When that's done, they can complete the authentication process with Nylas.
🔍 Email service providers, as a rule, don't offer APIs to allow third parties to generate app passwords on an end user's behalf. This means that this step must be done manually by the user.
When you use the Detect Provider endpoint, Nylas includes a link to the detected provider's app password tool, if one is available.
App passwords for Microsoft accounts
An app password is required if 2FA is enabled and you are authenticating without a security code.
App passwords for Yahoo accounts
Yahoo Mail accounts require an app password for Nylas to authenticate. An app password gives Nylas access to the account through the single password login.
App passwords for iCloud accounts
Apple ID uses an app password for accessing information in iCloud.
App passwords for other providers
The following providers also require app passwords: