In Queens, we support the old way to use pool_group and the
new way without it in Flavor both. In Stein, we will remove
the pool_group totally and only keep the new way in Flavor
and Pool.
Change-Id: Ie0bf6e4b5e6ca7b97037b2ea493465803f4eb898
Implements: bp remove-pool-group-totally
Delete Message with claim id means that when a user deletes a message, the
message must be claimed. If you want to delete a message, you will have to use
both message id and claim id. This can improve the security of the message.
Change-Id: I81f505e6ac3ee8f8ab42ce0c1b80ecc878f67b78
blueprint: delete-message-with-claim-id
This work is aimed to enable Zaqar to send email subscription
without the third part tools.
Change-Id: Id775c3dae4ee92198cf1bb9e20f5f83e3ad27e44
implements: blueprint zaqar-email-delivery