Problem with email accounts after migration

Hello to All, Yesterday I've migrated from a web hosting company using plesk to a new host that uses cpanel. My problem is that the domain is fully transferred and works perfectly BUT I'm experiencing problems with my email accounts. I'm receiving some emails from my clients but I'm unable to receive from all of them or when I send from my admin email to my Info email from outlook the mail never appears. Steps: Server A with Wordpress site> All in One WP Migration plugin > Changed Nameservers Server B > installed Wordpress platform > All in One WP Migration plugin> Website show on new server. I din't change anything on DNS records on server A.