Problem !!!! After setting up an email in Zoho new emails in outlook are all marked as read

Problem !!!! After setting up an email in Zoho new emails in outlook are all marked as read

Hello, this is very urgent. After setting up an email in Zoho all new emails in Outlook are marked as read. It causes serious problems. This is not possible at all. Yesterday I wrote an email to support, no answer. Emailing from Zoho did not work for 4 monhs, now it works, but there are problems with the Outlook. I clearly stated that I do not want to use Zoho as a primary email application. I just need it for sending mass emails to candidates. Nothing else. Can somebody contact me asap? Thank you