A tiny mod with a single purpose. It handles inviting your party/raid for you (and accepting invites from your party/raid), so you don't have to do that. Whether it's one other person (just your partner) or more. It's got you covered. It also has an option (disabled by default) to handle party-sync automatically too.

Commands:

/fs t: Toggle the invites/accepts functionality.
/fs p: Toggle the automatic party-sync functionality.
/fs l: List the invite slots and who's occupying them.
/fs a: Add a character to the invite list.
/fs r number: Remove a character from the invite list.
/fs m number: Set the maximum allowed group size, leave blank to disable.

Example:

/fs a leeroy — Adds Leeroy to the invite list.
/fs l — Shows Leeroy in the third position in the list.
/fs r 3 — Removes Leeroy from the list.

Notes:

Fellowship will progress down the list numerically as shown in the list command. In a raid, it won't invite past 40 people. In a party, it won't invite past five. If you set a maximum size, it won't invite past that.

Those you add to your list will have to be friended so that Fellowship can properly detect whether they're online or not. This is an API stipulation that shouldn't be circumvented, so I haven't.

That's it.