[GRASS-dev] Email subject standards

[Glynn Clements]

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 <glynn at gclements.plus.com>