+ 4.11.2 Breaking threads 60
+ 4.12 Delivery Status Notification (DSN) Support ..................... 60
+ 4.13 POP3 Support (OPTIONAL) ........................................ 60
+ 4.14 IMAP Support (OPTIONAL) ........................................ 61
+ 4.14.1 The Folder Browser 62
+ 4.14.2 Authentication 62
+ 4.15 NNTP Support (OPTIONAL) ........................................ 63
+ 4.15.1 Again: Scoring 63
+ 4.16 SMTP Support (OPTIONAL) ........................................ 64
+ 4.17 Managing multiple IMAP/POP/NNTP accounts (OPTIONAL) ............ 65
+ 4.18 Start a WWW Browser on URLs (EXTERNAL) ......................... 65
+ 4.19 Compressed folders Support (OPTIONAL) .......................... 65
+ 4.19.1 Open a compressed mailbox for reading 66
+ 4.19.2 Write a compressed mailbox 66
+ 4.19.3 Append a message to a compressed mailbox 67
+ 4.19.4 Encrypted folders 68
+
+ 5. Mutt-ng's MIME Support ............................................... 68
+ 5.1 Using MIME in Mutt ............................................. 68
+ 5.1.1 Viewing MIME messages in the pager 68
+ 5.1.2 The Attachment Menu 69
+ 5.1.3 The Compose Menu 69
+ 5.2 MIME Type configuration with mime.types ........................ 69
+ 5.3 MIME Viewer configuration with mailcap ......................... 70
+ 5.3.1 The Basics of the mailcap file 71
+ 5.3.2 Secure use of mailcap 72
+ 5.3.3 Advanced mailcap Usage 72
+ 5.3.4 Example mailcap files 75
+ 5.4 MIME Autoview .................................................. 76
+ 5.5 MIME Multipart/Alternative ..................................... 77
+ 5.6 MIME Lookup .................................................... 77
+
+ 6. Security Considerations ............................................ 78
+ 6.1 Passwords .................................................. 78
+ 6.2 Temporary Files ............................................ 78
+ 6.3 Information Leaks ............................................ 78
+ 6.3.1 Message-ID: headers 78
+ 6.3.2 mailto:-style links 79
+ 6.4 External applications ...................................... 79
+ 6.4.1 mailcap 79
+ 6.4.2 Other 80
+
+ 7. Reference ............................................................ 80
+ 7.1 Command line options ........................................... 80
+ 7.2 Patterns ....................................................... 81
+ 7.3 Configuration Commands ......................................... 83
+ 7.4 Configuration variables .......................................... 85
+ 7.4.1 abort_nosubject 86
+ 7.4.2 abort_unmodified 87
+ 7.4.3 alias_file 87
+ 7.4.4 alias_format 87
+ 7.4.5 allow_8bit 87
+ 7.4.6 allow_ansi 88
+
+ iii
+
+ 7.4.7 arrow_cursor 88
+ 7.4.8 ascii_chars 88
+ 7.4.9 askbcc 88
+ 7.4.10 askcc 88
+ 7.4.11 assumed_charset 89
+ 7.4.12 attach_format 89
+ 7.4.13 attach_sep 90
+ 7.4.14 attach_split 90
+ 7.4.15 attribution 90
+ 7.4.16 auto_tag 90
+ 7.4.17 autoedit 91
+ 7.4.18 beep 91
+ 7.4.19 beep_new 91
+ 7.4.20 bounce 91
+ 7.4.21 bounce_delivered 91
+ 7.4.22 braille_friendly 92
+ 7.4.23 certificate_file 92
+ 7.4.24 charset 92
+ 7.4.25 check_new 92
+ 7.4.26 collapse_unread 93
+ 7.4.27 compose_format 93
+ 7.4.28 config_charset 93
+ 7.4.29 confirmappend 93
+ 7.4.30 confirmcreate 94
+ 7.4.31 connect_timeout 94
+ 7.4.32 content_type 94
+ 7.4.33 copy 94
+ 7.4.34 crypt_autoencrypt 94
+ 7.4.35 crypt_autopgp 95
+ 7.4.36 crypt_autosign 95
+ 7.4.37 crypt_autosmime 95
+ 7.4.38 crypt_replyencrypt 95
+ 7.4.39 crypt_replysign 95
+ 7.4.40 crypt_replysignencrypted 96
+ 7.4.41 crypt_timestamp 96
+ 7.4.42 crypt_use_gpgme 96
+ 7.4.43 crypt_verify_sig 96
+ 7.4.44 date_format 96
+ 7.4.45 default_hook 97
+ 7.4.46 delete 97
+ 7.4.47 delete_space 97
+ 7.4.48 delete_untag 97
+ 7.4.49 digest_collapse 98
+ 7.4.50 display_filter 98
+ 7.4.51 dotlock_program 98
+ 7.4.52 dsn_notify 98
+ 7.4.53 dsn_return 99
+ 7.4.54 duplicate_threads 99
+ 7.4.55 edit_headers 99
+ 7.4.56 editor 99
+ 7.4.57 encode_from 99
+ 7.4.58 entropy_file 100
+ 7.4.59 envelope_from 100
+
+ iv
+
+ 7.4.60 escape 100
+ 7.4.61 fast_reply 100
+ 7.4.62 fcc_attach 100
+ 7.4.63 fcc_clear 101
+ 7.4.64 file_charset 101
+ 7.4.65 folder 101
+ 7.4.66 folder_format 101
+ 7.4.67 followup_to 102
+ 7.4.68 force_buffy_check 103
+ 7.4.69 force_name 103
+ 7.4.70 forward_decode 103
+ 7.4.71 forward_decrypt 103
+ 7.4.72 forward_edit 103
+ 7.4.73 forward_format 104
+ 7.4.74 forward_quote 104
+ 7.4.75 from 104
+ 7.4.76 gecos_mask 104
+ 7.4.77 hdrs 105
+ 7.4.78 header 105
+ 7.4.79 header_cache 105
+ 7.4.80 header_cache_compress 105
+ 7.4.81 help 105
+ 7.4.82 hidden_host 106
+ 7.4.83 hide_limited 106
+ 7.4.84 hide_missing 106
+ 7.4.85 hide_thread_subject 106
+ 7.4.86 hide_top_limited 106
+ 7.4.87 hide_top_missing 107
+ 7.4.88 history 107
+ 7.4.89 honor_followup_to 107
+ 7.4.90 hostname 107
+ 7.4.91 ignore_list_reply_to 107
+ 7.4.92 imap_authenticators 108
+ 7.4.93 imap_check_subscribed 108
+ 7.4.94 imap_delim_chars 108
+ 7.4.95 imap_headers 108
+ 7.4.96 imap_home_namespace 109
+ 7.4.97 imap_keepalive 109
+ 7.4.98 imap_list_subscribed 109
+ 7.4.99 imap_login 110
+ 7.4.100 imap_mail_check 110
+ 7.4.101 imap_pass 110
+ 7.4.102 imap_passive 110
+ 7.4.103 imap_peek 110
+ 7.4.104 imap_reconnect 111
+ 7.4.105 imap_servernoise 111
+ 7.4.106 imap_user 111
+ 7.4.107 implicit_autoview 111
+ 7.4.108 include 112
+ 7.4.109 include_onlyfirst 112
+ 7.4.110 indent_string 112
+ 7.4.111 index_format 112
+ 7.4.112 ispell 115
+
+ v
+
+ 7.4.113 keep_flagged 115
+ 7.4.114 list_reply 115
+ 7.4.115 locale 115
+ 7.4.116 mail_check 116
+ 7.4.117 mailcap_path 116
+ 7.4.118 mailcap_sanitize 116
+ 7.4.119 maildir_header_cache_verify 116
+ 7.4.120 maildir_trash 116
+ 7.4.121 mark_old 117
+ 7.4.122 markers 117
+ 7.4.123 mask 117
+ 7.4.124 max_display_recips 117
+ 7.4.125 max_line_length 117
+ 7.4.126 mbox 118
+ 7.4.127 mbox_type 118
+ 7.4.128 menu_context 118
+ 7.4.129 menu_move_off 118
+ 7.4.130 menu_scroll 118
+ 7.4.131 message_format 119
+ 7.4.132 meta_key 119
+ 7.4.133 metoo 119
+ 7.4.134 mh_purge 119
+ 7.4.135 mh_seq_flagged 119
+ 7.4.136 mh_seq_replied 119
+ 7.4.137 mh_seq_unseen 120
+ 7.4.138 mime_forward 120
+ 7.4.139 mime_forward_decode 120
+ 7.4.140 mime_forward_rest 120
+ 7.4.141 mix_entry_format 120
+ 7.4.142 mixmaster 121
+ 7.4.143 move 121
+ 7.4.144 msgid_format 121
+ 7.4.145 narrow_tree 122
+ 7.4.146 nntp_ask_followup_to 122
+ 7.4.147 nntp_ask_x_comment_to 123
+ 7.4.148 nntp_cache_dir 123
+ 7.4.149 nntp_catchup 123
+ 7.4.150 nntp_context 123
+ 7.4.151 nntp_followup_to_poster 124
+ 7.4.152 nntp_group_index_format 124
+ 7.4.153 nntp_host 124
+ 7.4.154 nntp_inews 125
+ 7.4.155 nntp_load_description 125
+ 7.4.156 nntp_mail_check 125
+ 7.4.157 nntp_mime_subject 125
+ 7.4.158 nntp_newsrc 126
+ 7.4.159 nntp_pass 126
+ 7.4.160 nntp_post_moderated 126
+ 7.4.161 nntp_reconnect 127
+ 7.4.162 nntp_save_unsubscribed 127
+ 7.4.163 nntp_show_new_news 127
+ 7.4.164 nntp_show_only_unread 127
+ 7.4.165 nntp_user 127
+
+ vi
+
+ 7.4.166 nntp_x_comment_to 128
+ 7.4.167 operating_system 128
+ 7.4.168 pager 128
+ 7.4.169 pager_context 128
+ 7.4.170 pager_format 129
+ 7.4.171 pager_index_lines 129
+ 7.4.172 pager_stop 129
+ 7.4.173 pgp_auto_decode 129
+ 7.4.174 pgp_autoinline 129
+ 7.4.175 pgp_check_exit 130
+ 7.4.176 pgp_clearsign_command 130
+ 7.4.177 pgp_decode_command 130
+ 7.4.178 pgp_decrypt_command 131
+ 7.4.179 pgp_encrypt_only_command 131
+ 7.4.180 pgp_encrypt_sign_command 131
+ 7.4.181 pgp_entry_format 131
+ 7.4.182 pgp_export_command 132
+ 7.4.183 pgp_getkeys_command 132
+ 7.4.184 pgp_good_sign 132
+ 7.4.185 pgp_ignore_subkeys 132
+ 7.4.186 pgp_import_command 133
+ 7.4.187 pgp_list_pubring_command 133
+ 7.4.188 pgp_list_secring_command 133
+ 7.4.189 pgp_long_ids 133
+ 7.4.190 pgp_mime_auto 133
+ 7.4.191 pgp_replyinline 134
+ 7.4.192 pgp_retainable_sigs 134
+ 7.4.193 pgp_show_unusable 134
+ 7.4.194 pgp_sign_as 134
+ 7.4.195 pgp_sign_command 135
+ 7.4.196 pgp_sort_keys 135
+ 7.4.197 pgp_strict_enc 135
+ 7.4.198 pgp_timeout 135
+ 7.4.199 pgp_use_gpg_agent 136
+ 7.4.200 pgp_verify_command 136
+ 7.4.201 pgp_verify_key_command 136
+ 7.4.202 pipe_decode 136
+ 7.4.203 pipe_sep 136
+ 7.4.204 pipe_split 136
+ 7.4.205 pop_auth_try_all 137
+ 7.4.206 pop_authenticators 137
+ 7.4.207 pop_delete 137
+ 7.4.208 pop_host 137
+ 7.4.209 pop_last 138
+ 7.4.210 pop_mail_check 138
+ 7.4.211 pop_pass 138
+ 7.4.212 pop_reconnect 138
+ 7.4.213 pop_user 139
+ 7.4.214 post_indent_string 139
+ 7.4.215 postpone 139
+ 7.4.216 postponed 139
+ 7.4.217 preconnect 139
+ 7.4.218 print 140
+
+ vii
+
+ 7.4.219 print_command 140
+ 7.4.220 print_decode 140
+ 7.4.221 print_split 140
+ 7.4.222 prompt_after 141
+ 7.4.223 query_command 141
+ 7.4.224 quit 141
+ 7.4.225 quote_empty 141
+ 7.4.226 quote_quoted 141
+ 7.4.227 quote_regexp 142
+ 7.4.228 read_inc 142
+ 7.4.229 read_only 142
+ 7.4.230 realname 142
+ 7.4.231 recall 142
+ 7.4.232 record 143
+ 7.4.233 reply_regexp 143
+ 7.4.234 reply_self 143
+ 7.4.235 reply_to 143
+ 7.4.236 resolve 144
+ 7.4.237 reverse_alias 144
+ 7.4.238 reverse_name 144
+ 7.4.239 reverse_realname 144
+ 7.4.240 rfc2047_parameters 145
+ 7.4.241 save_address 145
+ 7.4.242 save_empty 145
+ 7.4.243 save_name 145
+ 7.4.244 score 146
+ 7.4.245 score_threshold_delete 146
+ 7.4.246 score_threshold_flag 146
+ 7.4.247 score_threshold_read 146
+ 7.4.248 send_charset 146
+ 7.4.249 sendmail 147
+ 7.4.250 sendmail_wait 147
+ 7.4.251 shell 147
+ 7.4.252 sidebar_boundary 148
+ 7.4.253 sidebar_delim 148
+ 7.4.254 sidebar_newmail_only 148
+ 7.4.255 sidebar_number_format 148
+ 7.4.256 sidebar_shorten_hierarchy 149
+ 7.4.257 sidebar_visible 149
+ 7.4.258 sidebar_width 149
+ 7.4.259 sig_dashes 149
+ 7.4.260 sig_on_top 150
+ 7.4.261 signature 150
+ 7.4.262 signoff_string 150
+ 7.4.263 simple_search 150
+ 7.4.264 sleep_time 151
+ 7.4.265 smart_wrap 151
+ 7.4.266 smileys 151
+ 7.4.267 smime_ask_cert_label 151
+ 7.4.268 smime_ca_location 151
+ 7.4.269 smime_certificates 151
+ 7.4.270 smime_decrypt_command 152
+ 7.4.271 smime_decrypt_use_default_key 152
+
+ viii
+
+ 7.4.272 smime_default_key 153
+ 7.4.273 smime_encrypt_command 153
+ 7.4.274 smime_encrypt_with 153
+ 7.4.275 smime_get_cert_command 153
+ 7.4.276 smime_get_cert_email_command 153
+ 7.4.277 smime_get_signer_cert_command 153
+ 7.4.278 smime_import_cert_command 154
+ 7.4.279 smime_is_default 154
+ 7.4.280 smime_keys 154
+ 7.4.281 smime_pk7out_command 154
+ 7.4.282 smime_sign_command 155
+ 7.4.283 smime_sign_opaque_command 155
+ 7.4.284 smime_timeout 155
+ 7.4.285 smime_verify_command 155
+ 7.4.286 smime_verify_opaque_command 155
+ 7.4.287 smtp_envelope 155
+ 7.4.288 smtp_host 156
+ 7.4.289 smtp_pass 156
+ 7.4.290 smtp_port 156
+ 7.4.291 smtp_use_tls 156
+ 7.4.292 smtp_user 157
+ 7.4.293 sort 157
+ 7.4.294 sort_alias 157
+ 7.4.295 sort_aux 158
+ 7.4.296 sort_browser 158
+ 7.4.297 sort_re 158
+ 7.4.298 spam_separator 159
+ 7.4.299 spoolfile 159
+ 7.4.300 ssl_ca_certificates_file 159
+ 7.4.301 ssl_client_cert 159
+ 7.4.302 ssl_force_tls 160
+ 7.4.303 ssl_min_dh_prime_bits 160
+ 7.4.304 ssl_starttls 160
+ 7.4.305 ssl_use_sslv2 160
+ 7.4.306 ssl_use_sslv3 160
+ 7.4.307 ssl_use_tlsv1 161
+ 7.4.308 ssl_usesystemcerts 161
+ 7.4.309 status_chars 161
+ 7.4.310 status_format 161
+ 7.4.311 status_on_top 164
+ 7.4.312 strict_mailto 164
+ 7.4.313 strict_mime 164
+ 7.4.314 strict_threads 164
+ 7.4.315 strip_was 164
+ 7.4.316 strip_was_regex 165
+ 7.4.317 stuff_quoted 165
+ 7.4.318 suspend 165
+ 7.4.319 text_flowed 165
+ 7.4.320 thorough_search 165
+ 7.4.321 thread_received 166
+ 7.4.322 tilde 166
+ 7.4.323 timeout 166
+ 7.4.324 tmpdir 166
+
+ ix
+
+ 7.4.325 to_chars 166
+ 7.4.326 trash 167
+ 7.4.327 tunnel 167
+ 7.4.328 umask 167
+ 7.4.329 uncollapse_jump 167
+ 7.4.330 use_8bitmime 168
+ 7.4.331 use_domain 168
+ 7.4.332 use_from 168
+ 7.4.333 use_idn 168
+ 7.4.334 use_ipv6 168
+ 7.4.335 user_agent 169
+ 7.4.336 visual 169
+ 7.4.337 wait_key 169
+ 7.4.338 weed 169
+ 7.4.339 wrap_search 169
+ 7.4.340 wrapmargin 170
+ 7.4.341 write_bcc 170
+ 7.4.342 write_inc 170
+ 7.4.343 xterm_icon 170
+ 7.4.344 xterm_leave 170
+ 7.4.345 xterm_set_titles 171
+ 7.4.346 xterm_title 171
+ 7.5 Functions ....................................................... 171
+ 7.5.1 generic 171
+ 7.5.2 index 172
+ 7.5.3 pager 174
+ 7.5.4 alias 176
+ 7.5.5 query 176
+ 7.5.6 attach 176
+ 7.5.7 compose 177
+ 7.5.8 postpone 178
+ 7.5.9 browser 178
+ 7.5.10 pgp 179
+ 7.5.11 editor 179
+
+ 8. Miscellany ............................................................ 179
+ 8.1 Acknowledgments ................................................. 180
+ 8.2 About this document ............................................. 182
+
+ x
+