ConsumeIMAP not producing any flowfile

[#1]

I am trying to create a flow where I extract email contents and attachments. The first step in the flow is a ConsumeIMAP processor. I have plugged in the:

host name: imap.gmail.com

port: 993

username: some-email-id

password: ....

The flowfile doesn't produce any flowfile. The "Tasks/Time" keeps increasing, but the "Out" remains 0.

I have turned on authentication by less secure apps for this gmail account

Is there any extra step, that I could be missing, that could be causing this? any certificate or port related stuff that I should be taking care of?