This means "all my friends".
It means: I love all of my Mexican friends
To all my friends who want to talk a little.
You can say "Para todos mis amigos españoles".
Mis amigos, = My friends y yo = and I. Mis amigos y yo = My friends and I.
buenos dias a todos mis amigos
a todos mis amigos*/todas mis amigas# *if mixed gender or all male #if all female
Mis amigos son divertidos = My friends are fun.
It means "my" for plural things. For example: Mis amigos nuevos is "my new friends"
Todos mis amigos viajan mucho al extranjero.
You say: Feliz navidad a todos mis familiares y amigos.
"I always help out my friends with their homework."
Happy Three Kings Day to my friends.