MailboxValidator MailboxValidator is an email verification service that checks if an email address is valid and deliverable. It's used by businesses and developers to reduce bounce rates and improve email marketing campaign performance. Official docs: https://www.mailboxvalidator.com/api-email-validation MailboxValidator Overview - Email Address - Email Verification Result - Credits Use action names and parameters as needed. Working with MailboxValidator This skill uses the Membrane CLI to interact with MailboxValidator. Membrane handles authentication and credentials refresh automatically —…