Hello , -The Perfect Server - Ubuntu 18.04 (Nginx, MySQL, PHP, Postfix, BIND, Dovecot, Pure-FTPD and ISPConfig 3.1) ( Im a noob, enthusiast) Hope this is the right place to post this question . I have the server running properly using Roundcube as the webmail and I Used sendgrid as the relay in order to bypass the ip being blacklisted . I've been sending and receiving emails with out any issue but now i would like to manage my email with thunderbird or a likes ( spike , spark) easier for manage in my mobile. In order to do that i need to setup Imap and smtp in the respective apps . I've tried all of the ones to come in mind and they didn't work . should I use smtp from sendgrid? where do i get the smtp and imap info for my server ? Any help is greatly appreciated.