<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I am a mac user with Apple Mail as well I do not have any issues in creating new folders. I am also using qmail as my smtp. <div class=""><br class=""></div><div class="">Remo <br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jul 12, 2020, at 1:36 PM, Sami Ketola <<a href="mailto:sami.ketola@dovecot.fi" class="">sami.ketola@dovecot.fi</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><blockquote type="cite" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">On 11. Jul 2020, at 22.50, Filip Hajný <<a href="mailto:filip@hajny.net" class="">filip@hajny.net</a>> wrote:<br class=""><br class=""><blockquote type="cite" class="">I just created a subfolder in Apple mail. It shows up on the server as .list.Subfolder<br class="">I drug your message into the folder, and the message shows up in Mail.app and shows up in the subfolder on the server<br class=""><br class=""># ls -lnR .lists.Subfolder [10:40] [/<a href="mailto:usr/local/virtual/kremels@kreme.com" class="">usr/local/virtual/kremels@kreme.com</a>/Maildir]<br class="">total 56<br class="">drwx------ 2 89 89 512 Jul 11 10:41 cur<br class="">-rw------- 1 89 89 21 Jul 11 10:41 dovecot-keywords<br class="">-rw------- 1 89 89 109 Jul 11 10:41 dovecot-uidlist<br class="">-rw------- 1 89 89 1924 Jul 11 10:41 dovecot.index.cache<br class="">-rw------- 1 89 89 868 Jul 11 10:41 dovecot.index.log<br class="">-rw------- 1 89 89 0 Jul 11 10:35 maildirfolder<br class="">drwx------ 2 89 89 512 Jul 11 10:35 new<br class="">drwx------ 2 89 89 512 Jul 11 10:41 tmp<br class=""><br class=""></blockquote><br class="">I’ve created a test server and found out that the driving factor is what the namespace `separator` is set to. If set to /, Apple Mail gets confused and URL-encodes it when creating a new folder. If the separator is blank (as set by default) or set to e.g. a dot, everything works just fine.<br class=""><br class="">Based on example and docs I found, a slash character should be good or even recommended, suggesting this is some kind of bug in Apple Mail, but I’m not versed enough in the IMAP related RFCs to understand.<br class=""></blockquote><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">I'm Apple user. I have separator set to / and I can create folders just fine without any encoding. Can you please record imap rawlogs where it shows what command your Mail.App is sending?</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">Sami</span></div></blockquote></div><br class=""></div></body></html>