+ 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_noattach 86
+ 7.4.2 abort_nosubject 87
+ 7.4.3 abort_unmodified 87
+ 7.4.4 alias_file 87
+ 7.4.5 alias_format 87
+ 7.4.6 allow_8bit 88
+
+ iii
+
+ 7.4.7 allow_ansi 88
+ 7.4.8 arrow_cursor 88
+ 7.4.9 ascii_chars 88
+ 7.4.10 askbcc 89
+ 7.4.11 askcc 89
+ 7.4.12 assumed_charset 89
+ 7.4.13 attach_format 89
+ 7.4.14 attach_remind_regexp 90
+ 7.4.15 attach_sep 90
+ 7.4.16 attach_split 91
+ 7.4.17 attribution 91
+ 7.4.18 auto_tag 91
+ 7.4.19 autoedit 91
+ 7.4.20 beep 92
+ 7.4.21 beep_new 92
+ 7.4.22 bounce 92
+ 7.4.23 bounce_delivered 92
+ 7.4.24 braille_friendly 92
+ 7.4.25 certificate_file 92
+ 7.4.26 charset 93
+ 7.4.27 check_new 93
+ 7.4.28 collapse_unread 93
+ 7.4.29 compose_format 93
+ 7.4.30 config_charset 94
+ 7.4.31 confirmappend 94
+ 7.4.32 confirmcreate 94
+ 7.4.33 connect_timeout 94
+ 7.4.34 content_type 95
+ 7.4.35 copy 95
+ 7.4.36 crypt_autoencrypt 95
+ 7.4.37 crypt_autopgp 95
+ 7.4.38 crypt_autosign 95
+ 7.4.39 crypt_autosmime 96
+ 7.4.40 crypt_replyencrypt 96
+ 7.4.41 crypt_replysign 96
+ 7.4.42 crypt_replysignencrypted 96
+ 7.4.43 crypt_timestamp 96
+ 7.4.44 crypt_use_gpgme 97
+ 7.4.45 crypt_verify_sig 97
+ 7.4.46 date_format 97
+ 7.4.47 default_hook 97
+ 7.4.48 delete 98
+ 7.4.49 delete_space 98
+ 7.4.50 delete_untag 98
+ 7.4.51 digest_collapse 98
+ 7.4.52 display_filter 98
+ 7.4.53 dotlock_program 99
+ 7.4.54 dsn_notify 99
+ 7.4.55 dsn_return 99
+ 7.4.56 duplicate_threads 99
+ 7.4.57 edit_headers 100
+ 7.4.58 editor 100
+ 7.4.59 encode_from 100
+
+ iv
+
+ 7.4.60 entropy_file 100
+ 7.4.61 envelope_from 101
+ 7.4.62 escape 101
+ 7.4.63 fast_reply 101
+ 7.4.64 fcc_attach 101
+ 7.4.65 fcc_clear 101
+ 7.4.66 file_charset 101
+ 7.4.67 folder 102
+ 7.4.68 folder_format 102
+ 7.4.69 followup_to 103
+ 7.4.70 force_buffy_check 103
+ 7.4.71 force_name 103
+ 7.4.72 forward_decode 104
+ 7.4.73 forward_decrypt 104
+ 7.4.74 forward_edit 104
+ 7.4.75 forward_format 104
+ 7.4.76 forward_quote 104
+ 7.4.77 from 105
+ 7.4.78 gecos_mask 105
+ 7.4.79 hdrs 105
+ 7.4.80 header 105
+ 7.4.81 header_cache 106
+ 7.4.82 header_cache_compress 106
+ 7.4.83 help 106
+ 7.4.84 hidden_host 106
+ 7.4.85 hide_limited 107
+ 7.4.86 hide_missing 107
+ 7.4.87 hide_thread_subject 107
+ 7.4.88 hide_top_limited 107
+ 7.4.89 hide_top_missing 107
+ 7.4.90 history 107
+ 7.4.91 honor_followup_to 108
+ 7.4.92 hostname 108
+ 7.4.93 ignore_list_reply_to 108
+ 7.4.94 imap_authenticators 108
+ 7.4.95 imap_check_subscribed 109
+ 7.4.96 imap_delim_chars 109
+ 7.4.97 imap_headers 109
+ 7.4.98 imap_home_namespace 109
+ 7.4.99 imap_keepalive 110
+ 7.4.100 imap_list_subscribed 110
+ 7.4.101 imap_login 110
+ 7.4.102 imap_mail_check 110
+ 7.4.103 imap_pass 111
+ 7.4.104 imap_passive 111
+ 7.4.105 imap_peek 111
+ 7.4.106 imap_reconnect 111
+ 7.4.107 imap_servernoise 112
+ 7.4.108 imap_user 112
+ 7.4.109 implicit_autoview 112
+ 7.4.110 include 112
+ 7.4.111 include_onlyfirst 112
+ 7.4.112 indent_string 113
+
+ v
+
+ 7.4.113 index_format 113
+ 7.4.114 ispell 115
+ 7.4.115 keep_flagged 116
+ 7.4.116 list_reply 116
+ 7.4.117 locale 116
+ 7.4.118 mail_check 116
+ 7.4.119 mailcap_path 116
+ 7.4.120 mailcap_sanitize 117
+ 7.4.121 maildir_header_cache_verify 117
+ 7.4.122 maildir_trash 117
+ 7.4.123 mark_old 117
+ 7.4.124 markers 118
+ 7.4.125 mask 118
+ 7.4.126 max_display_recips 118
+ 7.4.127 max_line_length 118
+ 7.4.128 mbox 118
+ 7.4.129 mbox_type 118
+ 7.4.130 menu_context 119
+ 7.4.131 menu_move_off 119
+ 7.4.132 menu_scroll 119
+ 7.4.133 message_format 119
+ 7.4.134 meta_key 119
+ 7.4.135 metoo 120
+ 7.4.136 mh_purge 120
+ 7.4.137 mh_seq_flagged 120
+ 7.4.138 mh_seq_replied 120
+ 7.4.139 mh_seq_unseen 120
+ 7.4.140 mime_forward 120
+ 7.4.141 mime_forward_decode 121
+ 7.4.142 mime_forward_rest 121
+ 7.4.143 mix_entry_format 121
+ 7.4.144 mixmaster 122
+ 7.4.145 move 122
+ 7.4.146 msgid_format 122
+ 7.4.147 narrow_tree 123
+ 7.4.148 nntp_ask_followup_to 123
+ 7.4.149 nntp_ask_x_comment_to 123
+ 7.4.150 nntp_cache_dir 124
+ 7.4.151 nntp_catchup 124
+ 7.4.152 nntp_context 124
+ 7.4.153 nntp_followup_to_poster 124
+ 7.4.154 nntp_group_index_format 125
+ 7.4.155 nntp_host 125
+ 7.4.156 nntp_inews 125
+ 7.4.157 nntp_load_description 126
+ 7.4.158 nntp_mail_check 126
+ 7.4.159 nntp_mime_subject 126
+ 7.4.160 nntp_newsrc 126
+ 7.4.161 nntp_pass 127
+ 7.4.162 nntp_post_moderated 127
+ 7.4.163 nntp_reconnect 127
+ 7.4.164 nntp_save_unsubscribed 127
+ 7.4.165 nntp_show_new_news 128
+
+ vi
+
+ 7.4.166 nntp_show_only_unread 128
+ 7.4.167 nntp_user 128
+ 7.4.168 nntp_x_comment_to 128
+ 7.4.169 operating_system 128
+ 7.4.170 pager 129
+ 7.4.171 pager_context 129
+ 7.4.172 pager_format 129
+ 7.4.173 pager_index_lines 129
+ 7.4.174 pager_stop 130
+ 7.4.175 pgp_auto_decode 130
+ 7.4.176 pgp_autoinline 130
+ 7.4.177 pgp_check_exit 130
+ 7.4.178 pgp_clearsign_command 131
+ 7.4.179 pgp_decode_command 131
+ 7.4.180 pgp_decrypt_command 131
+ 7.4.181 pgp_encrypt_only_command 132
+ 7.4.182 pgp_encrypt_sign_command 132
+ 7.4.183 pgp_entry_format 132
+ 7.4.184 pgp_export_command 133
+ 7.4.185 pgp_getkeys_command 133
+ 7.4.186 pgp_good_sign 133
+ 7.4.187 pgp_ignore_subkeys 133
+ 7.4.188 pgp_import_command 133
+ 7.4.189 pgp_list_pubring_command 133
+ 7.4.190 pgp_list_secring_command 134
+ 7.4.191 pgp_long_ids 134
+ 7.4.192 pgp_mime_auto 134
+ 7.4.193 pgp_replyinline 134
+ 7.4.194 pgp_retainable_sigs 135
+ 7.4.195 pgp_show_unusable 135
+ 7.4.196 pgp_sign_as 135
+ 7.4.197 pgp_sign_command 135
+ 7.4.198 pgp_sort_keys 135
+ 7.4.199 pgp_strict_enc 136
+ 7.4.200 pgp_timeout 136
+ 7.4.201 pgp_use_gpg_agent 136
+ 7.4.202 pgp_verify_command 136
+ 7.4.203 pgp_verify_key_command 137
+ 7.4.204 pipe_decode 137
+ 7.4.205 pipe_sep 137
+ 7.4.206 pipe_split 137
+ 7.4.207 pop_auth_try_all 137
+ 7.4.208 pop_authenticators 138
+ 7.4.209 pop_delete 138
+ 7.4.210 pop_host 138
+ 7.4.211 pop_last 138
+ 7.4.212 pop_mail_check 139
+ 7.4.213 pop_pass 139
+ 7.4.214 pop_reconnect 139
+ 7.4.215 pop_user 139
+ 7.4.216 post_indent_string 139
+ 7.4.217 postpone 140
+ 7.4.218 postponed 140
+
+ vii
+
+ 7.4.219 preconnect 140
+ 7.4.220 print 140
+ 7.4.221 print_command 141
+ 7.4.222 print_decode 141
+ 7.4.223 print_split 141
+ 7.4.224 prompt_after 141
+ 7.4.225 query_command 141
+ 7.4.226 quit 142
+ 7.4.227 quote_empty 142
+ 7.4.228 quote_quoted 142
+ 7.4.229 quote_regexp 142
+ 7.4.230 read_inc 142
+ 7.4.231 read_only 143
+ 7.4.232 realname 143
+ 7.4.233 recall 143
+ 7.4.234 record 143
+ 7.4.235 reply_regexp 144
+ 7.4.236 reply_self 144
+ 7.4.237 reply_to 144
+ 7.4.238 resolve 144
+ 7.4.239 reverse_alias 144
+ 7.4.240 reverse_name 145
+ 7.4.241 reverse_realname 145
+ 7.4.242 rfc2047_parameters 145
+ 7.4.243 save_address 146
+ 7.4.244 save_empty 146
+ 7.4.245 save_name 146
+ 7.4.246 score 146
+ 7.4.247 score_threshold_delete 147
+ 7.4.248 score_threshold_flag 147
+ 7.4.249 score_threshold_read 147
+ 7.4.250 send_charset 147
+ 7.4.251 sendmail 147
+ 7.4.252 sendmail_wait 148
+ 7.4.253 shell 148
+ 7.4.254 sidebar_boundary 148
+ 7.4.255 sidebar_delim 148
+ 7.4.256 sidebar_newmail_only 149
+ 7.4.257 sidebar_number_format 149
+ 7.4.258 sidebar_shorten_hierarchy 149
+ 7.4.259 sidebar_visible 150
+ 7.4.260 sidebar_width 150
+ 7.4.261 sig_dashes 150
+ 7.4.262 sig_on_top 150
+ 7.4.263 signature 150
+ 7.4.264 signoff_string 151
+ 7.4.265 simple_search 151
+ 7.4.266 sleep_time 151
+ 7.4.267 smart_wrap 151
+ 7.4.268 smileys 152
+ 7.4.269 smime_ask_cert_label 152
+ 7.4.270 smime_ca_location 152
+ 7.4.271 smime_certificates 152
+
+ viii
+
+ 7.4.272 smime_decrypt_command 152
+ 7.4.273 smime_decrypt_use_default_key 153
+ 7.4.274 smime_default_key 153
+ 7.4.275 smime_encrypt_command 153
+ 7.4.276 smime_encrypt_with 154
+ 7.4.277 smime_get_cert_command 154
+ 7.4.278 smime_get_cert_email_command 154
+ 7.4.279 smime_get_signer_cert_command 154
+ 7.4.280 smime_import_cert_command 154
+ 7.4.281 smime_is_default 154
+ 7.4.282 smime_keys 155
+ 7.4.283 smime_pk7out_command 155
+ 7.4.284 smime_sign_command 155
+ 7.4.285 smime_sign_opaque_command 155
+ 7.4.286 smime_timeout 156
+ 7.4.287 smime_verify_command 156
+ 7.4.288 smime_verify_opaque_command 156
+ 7.4.289 smtp_envelope 156
+ 7.4.290 smtp_host 156
+ 7.4.291 smtp_pass 157
+ 7.4.292 smtp_port 157
+ 7.4.293 smtp_use_tls 157
+ 7.4.294 smtp_user 157
+ 7.4.295 sort 158
+ 7.4.296 sort_alias 158
+ 7.4.297 sort_aux 158
+ 7.4.298 sort_browser 159
+ 7.4.299 sort_re 159
+ 7.4.300 spam_separator 159
+ 7.4.301 spoolfile 160
+ 7.4.302 ssl_ca_certificates_file 160
+ 7.4.303 ssl_client_cert 160
+ 7.4.304 ssl_force_tls 160
+ 7.4.305 ssl_min_dh_prime_bits 160
+ 7.4.306 ssl_starttls 161
+ 7.4.307 ssl_use_sslv2 161
+ 7.4.308 ssl_use_sslv3 161
+ 7.4.309 ssl_use_tlsv1 161
+ 7.4.310 ssl_usesystemcerts 161
+ 7.4.311 status_chars 162
+ 7.4.312 status_format 162
+ 7.4.313 status_on_top 164
+ 7.4.314 strict_mailto 164
+ 7.4.315 strict_mime 165
+ 7.4.316 strict_threads 165
+ 7.4.317 strip_was 165
+ 7.4.318 strip_was_regex 165
+ 7.4.319 stuff_quoted 166
+ 7.4.320 suspend 166
+ 7.4.321 text_flowed 166
+ 7.4.322 thorough_search 166
+ 7.4.323 thread_received 166
+ 7.4.324 tilde 167
+
+ ix
+
+ 7.4.325 timeout 167
+ 7.4.326 tmpdir 167
+ 7.4.327 to_chars 167
+ 7.4.328 trash 167
+ 7.4.329 tunnel 168
+ 7.4.330 umask 168
+ 7.4.331 uncollapse_jump 168
+ 7.4.332 use_8bitmime 168
+ 7.4.333 use_domain 168
+ 7.4.334 use_from 169
+ 7.4.335 use_idn 169
+ 7.4.336 use_ipv6 169
+ 7.4.337 user_agent 169
+ 7.4.338 visual 169
+ 7.4.339 wait_key 170
+ 7.4.340 weed 170
+ 7.4.341 wrap_search 170
+ 7.4.342 wrapmargin 170
+ 7.4.343 write_bcc 170
+ 7.4.344 write_inc 171
+ 7.4.345 xterm_icon 171
+ 7.4.346 xterm_leave 171
+ 7.4.347 xterm_set_titles 171
+ 7.4.348 xterm_title 171
+ 7.5 Functions ....................................................... 172
+ 7.5.1 generic 172
+ 7.5.2 index 173
+ 7.5.3 pager 175
+ 7.5.4 alias 177
+ 7.5.5 query 177
+ 7.5.6 attach 177
+ 7.5.7 compose 178
+ 7.5.8 postpone 179
+ 7.5.9 browser 179
+ 7.5.10 pgp 180
+ 7.5.11 editor 180
+
+ 8. Miscellany ............................................................ 180
+ 8.1 Acknowledgments ................................................. 181
+ 8.2 About this document ............................................. 183
+
+ x
+