Comment 4 for bug 44542

Actually, with Launchpad mailing lists, you /can/ turn off the spigot for a while, it's just not very convenient because you have to manually enable your subscriptions when you return.

If you go to https://launchpad.net/people/+me/+editemails you'll see the list of teams to which you're a member and which have a mailing list. For the lists you want to stop getting messages from, just set your subscription to Don't Subscribe and the message will stop. When you return from vacation, set the subscription back to one of your email addresses and they'll start again.

The vacation feature will simply make re-subscription automatic, and can be used to manage all your subscriptions in one easy place.