Hi. Is real time sync outlook-netsuite integration possible? without connectors.

I'm not 100% certain @ARCHANA JOY but I don't believe so. (hence why the connectors seem to be the only option). Any reason why using connectors is not an option for you?

yes I need to develop the script. Is email plugins for outlook deprecated?

What about not needing to write a script and doing it via a UI?