[ADDED] other mail provider placeholder
[ADDED] navigation and navigation bar background
[REFACTOR] structure for subclasses
[REMOVED] mailbox creation
[REFACTOR] structure for subclasses
[ADDED] SMTP server
[ADDED] placeholder to textfield configuration
[FIXED] server form does not longer dismiss view controller
[FIXED] key is named correctly
[ADDED] navigation to SMTP
[ADDED] saving