If you sent the mail from a gmail or riseup account you should get a reply within 1-2 days.
But are you sure about this? The idea with these bridges is to get access to Tor from countries where Tor is not allowed (China, Russia, etc.) and then it makes sense.
But if you are in west or in a country where Tor is not censored you should not use such bridges, thus you risk to be very alone there and therefore stick out.
In case anyone revisits the topic. An alternative way to what /u/DaVenom said is to try this script which gets bridges from non-14 eyes countries /post/cc9b9601a520cba5fdb4. You can get many more bridges this way.
But are you sure about this? The idea with these bridges is to get access to Tor from countries where Tor is not allowed (China, Russia, etc.) and then it makes sense.
But if you are in west or in a country where Tor is not censored you should not use such bridges, thus you risk to be very alone there and therefore stick out.
I am just afraid of BSI ;) I guess they aare hosting most of the guards here