If you don't see your favorite in the Shop, not to worry. Voting and reserving your favorite is still available. You can sign up to wait for your favorite and still start using one that is already connected. It's free to switch when yours comes online! Here is the list of the next most popular exchanges that have users waiting.
@IIEX.net
@EarthHQ.net @UnionMail.org
@SolMail.net
@GalacticMail.net
@CommRelayX
@UnionMail.org
@RebelComm.net
@BugMail.net
@CortexMail.net
@UtopiaMail.net
@PupMail
@GaiaMail.net
@MarsRelay.net
@LoMail.net
@LunaMail.net
@StarbaseX.net
@JupiterX
@InterstellarMail.net
@MarsRelay.net
@NeptuneX.net