Vaclav Petras wrote:
> please note that changing subject when you reply an email breaks the email
> thread, so then there are two threads instead of one.
If the mail client uses the Subject header to identify threads, that's
a defect in the mail client.
What *does* break threading is using a mail client which doesn't set
the In-Reply-To or References headers when sending a reply.
For more details, see RFC 2822:
http://www.ietf.org/rfc/rfc2822.txt
--
Glynn Clements <gl...@gclements.plus.com>
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