A phobia of small spaces is called claustrophobia.
Ntomataphobia
From what I understand there is no specific phobia for people who are afraid of mail. Most just call it Mail Phobia...
The phobia of elbows is called Ichicascadiggaphobia
Triskadekophobia.
Gynophobia :D
laceaphobia
I am not sure of the name but yes, people can have a phobia of anything, for example, my friend is scared of tomato ketchup.
Telephobia of course.
Anorexia nervosa
social phobia
Mainly a phobia.