EMA does not do any software broadcasting everything is done though the API and things you can do in game,,,

if blizzard does not like stuff addons do they can change it. 

as my understand there is nothing emac or ema is doing to get you banned

Have a bug?? Report here: 

https://github.com/ebonyfaye/ema-classic/issues

Now about the addon:

EMA-Classic is an Addon for multiboxers.

It has the following features:

Team

1. Add all your characters Into a driven rich List With support for Mutiple Team Lines
2. A offline system that will automatic offline characters your not player anymore
3. Display health, Power, Class Power (combo Points)   and experience bars team members even when they are not in the same party. 

Party

1. Create a complete party from among all your characters with just a few clicks. and even Invite Multiple Groups of 5 man party/raids

Quests

1. Quest selection, accepting, abandoning, completion and watching on one character are mirrored by your other characters.
2. Automatically accept quests and escort quests. Automatically complete quests with no choice of rewards or Same Rewards. (same Class)

Quests-Wacher

1. A really helpful GUI to Show what quests what chars are on and what they have done very helpful to know what is getting done and when.
2. Right click to untrack on all of the team! or share a quest and or abandoned Quests

Follow

1. Option to automatically follow after combat.
2. Ability to warn master character in a variety of ways if a minion stops following.
3. Commands available to strobe the follow command every second (great for boxing melee characters where combat breaks follow).
4. Train Follow where each character will follow the member in front of them.
5. Follow's can be set in keybindings Under the standard Warcraft Keymaps

Talk

1. Whispers to slave characters can be forward to the master character as well as master replies.
2. Can direct replies from slaves to a particular character from the master character (/w myslave @myslavetarget hello there)

Interaction

1. Slave characters automatically take the same flight as the master character.
2. EMA: Auto Loot helps with a Blizzard AutoLoot where sometimes items get suck! (quest items)

Merchant

1. Automatically sell by quality and Llvl.
2. Automatically sell Items in a list!
3. Automatically purchase items from merchants/Merchants! and by EMA: Tags
4. Automatically repair at a merchant (optionally using guild funds).
5. Back List to not sell Items you like to keep like crafting stones

Character

2. Automatically deny duels, deny guild invitations, and accept resurrection requests + Only Team Members!
3. Automatically accept summon requests. 
4. Warn the Team when health, mana, Durability fall below a certain percentage.
5. Warn When a Team Members runs out of Bag Space

Misc

2. Configure EMA options for all characters from just one character.
3. Messages to master character can be sent to various places (guild, guild officer, private channel, default chat, etc).
4. Communications Can Be used as Automatic Or as a Guild (faster)