EMAIL SETUP FOR ANDROID USING IMAP
For Samsung Galaxy devices (Under Manual Setup, choosing IMAP):
https://www.samsung.com/uk/support/mobile-devices/how-do-i-set-up-gmail-or-hotmail-on-my-samsung-galaxy-device/
For Google Pixel devices (Choose Personal IMAP account):
https://support.google.com/pixelphone/answer/2840815?hl=en
Configuration details for USNEXT (replace <Full email address> with your email address):
Type: IMAP
email format <Full email address>
Username format: <Full email address>
Incoming mailserver: mail.usnx.com
Outgoing mailserver: mail.usnx.com
IMAP port: 993
TLS/SSL required: Yes
SMTP port: 587
TLS/SSL required: Yes