MailCheck for your browser. Use different functions and always get an
overview over your e-mails at a glance.
MailCheck is incompatible with Safari Version 12.
Apple prohibits Add-ons in the Safari web browser Version 12. Consequently,
MailCheck cannot be used anymore. After updating Safari
to a newer version, MailCheck will not be available in this
browser anymore. Alternatively, you may install and use MailCheck on Mac OS in the browsers Google Chrome or Mozilla Firefox.