'SELECT => IMAP4rev1 Server logging out Trying to Log in to Yahoo Mail

I'm trying at access the Yahoo Mail IMAP. My script logs in, fetches emails then logs out again. It then pauses for 1 second before logging in again.

It works ok for about 10 minutes then starts giving this error when trying to log back in:

SELECT => IMAP4rev1 Server logging out

After which I can no longer log in.

I have looked through the docs but cannot see any mention of rate limits.

Does anyone know what the issue is?

imap

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