MailHog - MailHog is an email testing tool inspired by MailCatcher, but easier to install.
MailCatcher - MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a...
Mailtrap - Email Delivery Platform that delivers just in time. Great for businesses and individuals.
FakeSMTP - FakeSMTP is a Free Fake SMTP Server with GUI for testing emails in applications easily.
Smtp4dev - Smtp4dev is an all-in-one SMTP server designed to develop and test emails in your applications.
Mailosaur - Email Testing for QA & Development Teams.