I'm on a MAC, using High Sierra and MACMAIL. This morning, sending test emails to myself taking 5 minutes for a blank email, and 15 minutes for a message with attachment.

Hello bbd007, we are concerned that you cannot send emails using our Cox Webmail system, and we'd like to have this escalated. Can you please send us an email at cox.help@cox.com and include a link to this forum thread? We want you to enjoy the email system we offer without any issues. -Kevin M. Cox Support Forum Moderator