Hiya Folks. I wanted to join the chat on Dicord. Currently I’m over at Emerald Dream and would like to join the guild.
Hi Arjunn. I see you have just recently applied. Once you go through the process and are approved, you will receive a letter detailing your next steps. That includes Discord. 
For WoW Alliance - Once you are a member, you can post here to get the process started:
https://forums.oldtimersguild.com/t/world-of-warcraft-alliance-intra-guild-invites/116/388
I should note that we are not on Emerrald Dream for either of our chapters.
Alliance is on Anvilmar-Undermine
Horde is on Kul Tiras - Blasdefist
Hope this helps.