| encoding/base64 | Package base64 implements base64 encoding as specified by RFC 4648. |
| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/emersion/go-imap | Package imap implements IMAP4rev1 (RFC 3501). |
| github.com/emersion/go-imap/utf7 | Package utf7 implements modified UTF-7 encoding defined in RFC 3501 section 5.1.3 |
| github.com/emersion/go-sasl | Library for Simple Authentication and Security Layer (SASL) defined in RFC 4422. |