diff --git a/python/python3-mailman/README b/python/python3-mailman/README
new file mode 100644
index 0000000000..93f9acef84
--- /dev/null
+++ b/python/python3-mailman/README
@@ -0,0 +1,11 @@
+Mailman (the GNU Mailing List Manager)
+
+Version 3 of the GNU mailing list manager.
+This script builds, but may lack a few steps to be used out of the
+box.
+It is - for now - there as a basis for working on it.
+
+However this installs everything needed to run mailman3 on a
+Slackware.
+
+For old mailman 2, see the mailman SlackBuild.
diff --git a/python/python3-mailman/python3-mailman.SlackBuild b/python/python3-mailman/python3-mailman.SlackBuild
new file mode 100644
index 0000000000..a9c1282cd9
--- /dev/null
+++ b/python/python3-mailman/python3-mailman.SlackBuild
@@ -0,0 +1,74 @@
+#!/bin/bash
+
+# Slackware build script for python3-mailman
+
+# Copyright 2023 Yth | Pont-en-Royans, France | yth@ythogtha.org
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+cd $(dirname $0) ; CWD=$(pwd)
+
+PRGNAM=python3-mailman
+SRCNAM=${PRGNAM#python3-*}
+VERSION=${VERSION:-3.3.8}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+PKGTYPE=${PKGTYPE:-tgz}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i586 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
+  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
+  exit 0
+fi
+
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $SRCNAM-$VERSION
+tar xvf $CWD/$SRCNAM-$VERSION.tar.?z*
+cd $SRCNAM-$VERSION
+chown -R root:root .
+find -L .  \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555   -o -perm 511 \) -exec chmod 755 {} \; -o  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+python3 setup.py install --root=$PKG
+
+find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF   | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a [A-Z][A-Z]* $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
diff --git a/python/python3-mailman/python3-mailman.info b/python/python3-mailman/python3-mailman.info
new file mode 100644
index 0000000000..3f63b25e87
--- /dev/null
+++ b/python/python3-mailman/python3-mailman.info
@@ -0,0 +1,10 @@
+PRGNAM="python3-mailman"
+VERSION="3.3.8"
+HOMEPAGE="https://pypi.org/project/mailman/"
+DOWNLOAD="https://pypi.python.org/packages/source/m/mailman/mailman-3.3.8.tar.gz"
+MD5SUM="2e65dc1f8ab0c2b420c42c55df21d564"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES="click gunicorn importlib-resources passlib python3-aiosmtpd python3-alembic python3-authheaders python3-dateutil python3-falcon python3-flufl.bounce python3-flufl.i18n python3-flufl.lock python3-lazr.config typing-extensions zope.configuration zope.component"
+MAINTAINER="Yth - Arnaud"
+EMAIL="yth@ythogtha.org"
diff --git a/python/python3-mailman/slack-desc b/python/python3-mailman/slack-desc
new file mode 100644
index 0000000000..6cfd97a755
--- /dev/null
+++ b/python/python3-mailman/slack-desc
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+               |-----handy-ruler------------------------------------------------------|
+python3-mailman: python3-mailman (the GNU Mailing List Manager)
+python3-mailman:
+python3-mailman: Mailman is free software for managing electronic mail discussion and
+python3-mailman: e-newsletter lists.  Mailman is integrated with the web, making it
+python3-mailman: easy for users to manage their accounts and for list owners to
+python3-mailman: administer their lists.  Mailman supports built-in archiving,
+python3-mailman: automatic bounce processing, content filtering, digest delivery, spam
+python3-mailman: filters, and more.
+python3-mailman:
+python3-mailman: Homepage: http://www.gnu.org/software/mailman/index.html
+python3-mailman: