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RE: [PATCH] OAUTH 2.0 Bearer token support SMTP/IMAP (XOAUTH2)

From: Steve Holme <>
Date: Fri, 20 Sep 2013 22:08:53 +0100

Hi Kyle,

On Sun, 25 Aug 2013, Kyle L. Huff wrote:

> > > Do you know if OAUTH 2.0 is supported in POP3 as well?
> >
> > POP3 might support OAUTH 2.0, but I have not found a provider that
> > has implemented it. I know that presently the google POP3 service
> > does not support OAUTH 2.0.
> I couldn't find much on the subject myself, from a quick search, but I
> think I found a mail client / api that had implemented it and it
> should be pretty straight forward to implement it here as well.
> I plan to focus on the HTTP Authorization XOAUTH2 mechanism in
> the near future, I could attempt to address the POP3 implementation
> at that time. I will have to do some digging to find a provider that I can
> test it with.

Daniel announced this week that we are approaching feature freeze for cURL
7.33 and as I felt it would be best to add XOAUTH to POP3 in the same
release as IMAP and SMTP I have cobbled together the appropriate

I have pushed this as commit 18db7438512de1 and would appreciate it if you
would be so kind to review the code at some point.

Many thanks in advance

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Received on 2013-09-20