diff --git a/dnsapi/dns_selfhost.sh b/dnsapi/dns_selfhost.sh
new file mode 100644
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--- /dev/null
+++ b/dnsapi/dns_selfhost.sh
@@ -0,0 +1,94 @@
+#!/usr/bin/env sh
+#
+#       Author: Marvin Edeler
+#       Report Bugs here: https://github.com/Marvo2011/acme.sh/issues/1
+#	Last Edit: 17.02.2022
+
+dns_selfhost_add() {
+  fulldomain=$1
+  txt=$2
+  _info "Calling acme-dns on selfhost"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txt"
+
+  SELFHOSTDNS_UPDATE_URL="https://selfhost.de/cgi-bin/api.pl"
+
+  # Get values, but don't save until we successfully validated
+  SELFHOSTDNS_USERNAME="${SELFHOSTDNS_USERNAME:-$(_readaccountconf_mutable SELFHOSTDNS_USERNAME)}"
+  SELFHOSTDNS_PASSWORD="${SELFHOSTDNS_PASSWORD:-$(_readaccountconf_mutable SELFHOSTDNS_PASSWORD)}"
+  # These values are domain dependent, so read them from there
+  SELFHOSTDNS_MAP="${SELFHOSTDNS_MAP:-$(_readdomainconf SELFHOSTDNS_MAP)}"
+  # Selfhost api can't dynamically add TXT record,
+  # so we have to store the last used RID of the domain to support a second RID for wildcard domains
+  # (format: 'fulldomainA:lastRid fulldomainB:lastRid ...')
+  SELFHOSTDNS_MAP_LAST_USED_INTERNAL=$(_readdomainconf SELFHOSTDNS_MAP_LAST_USED_INTERNAL)
+
+  if [ -z "${SELFHOSTDNS_USERNAME:-}" ] || [ -z "${SELFHOSTDNS_PASSWORD:-}" ]; then
+    _err "SELFHOSTDNS_USERNAME and SELFHOSTDNS_PASSWORD must be set"
+    return 1
+  fi
+
+  # get the domain entry from SELFHOSTDNS_MAP
+  # only match full domains (at the beginning of the string or with a leading whitespace),
+  # e.g. don't match mytest.example.com or sub.test.example.com for test.example.com
+  # if the domain is defined multiple times only the last occurance will be matched
+  mapEntry=$(echo "$SELFHOSTDNS_MAP" | sed -n -E "s/(^|^.*[[:space:]])($fulldomain)(:[[:digit:]]+)([:]?[[:digit:]]*)(.*)/\2\3\4/p")
+  _debug2 mapEntry "$mapEntry"
+  if test -z "$mapEntry"; then
+    _err "SELFHOSTDNS_MAP must contain the fulldomain incl. prefix and at least one RID"
+    return 1
+  fi
+
+  # get the RIDs from the map entry
+  rid1=$(echo "$mapEntry" | cut -d: -f2)
+  rid2=$(echo "$mapEntry" | cut -d: -f3)
+
+  # read last used rid domain
+  lastUsedRidForDomainEntry=$(echo "$SELFHOSTDNS_MAP_LAST_USED_INTERNAL" | sed -n -E "s/(^|^.*[[:space:]])($fulldomain:[[:digit:]]+)(.*)/\2/p")
+  _debug2 lastUsedRidForDomainEntry "$lastUsedRidForDomainEntry"
+  lastUsedRidForDomain=$(echo "$lastUsedRidForDomainEntry" | cut -d: -f2)
+
+  rid="$rid1"
+  if [ "$lastUsedRidForDomain" = "$rid" ] && ! test -z "$rid2"; then
+    rid="$rid2"
+  fi
+
+  _info "Trying to add $txt on selfhost for rid: $rid"
+
+  data="?username=$SELFHOSTDNS_USERNAME&password=$SELFHOSTDNS_PASSWORD&rid=$rid&content=$txt"
+  response="$(_get "$SELFHOSTDNS_UPDATE_URL$data")"
+
+  if ! echo "$response" | grep "200 OK" >/dev/null; then
+    _err "Invalid response of acme-dns for selfhost"
+    return 1
+  fi
+
+  # write last used rid domain
+  newLastUsedRidForDomainEntry="$fulldomain:$rid"
+  if ! test -z "$lastUsedRidForDomainEntry"; then
+    # replace last used rid entry for domain
+    SELFHOSTDNS_MAP_LAST_USED_INTERNAL=$(echo "$SELFHOSTDNS_MAP_LAST_USED_INTERNAL" | sed -n -E "s/$lastUsedRidForDomainEntry/$newLastUsedRidForDomainEntry/p")
+  else
+    # add last used rid entry for domain
+    if test -z "$SELFHOSTDNS_MAP_LAST_USED_INTERNAL"; then
+      SELFHOSTDNS_MAP_LAST_USED_INTERNAL="$newLastUsedRidForDomainEntry"
+    else
+      SELFHOSTDNS_MAP_LAST_USED_INTERNAL="$SELFHOSTDNS_MAP_LAST_USED_INTERNAL $newLastUsedRidForDomainEntry"
+    fi
+  fi
+
+  # Now that we know the values are good, save them
+  _saveaccountconf_mutable SELFHOSTDNS_USERNAME "$SELFHOSTDNS_USERNAME"
+  _saveaccountconf_mutable SELFHOSTDNS_PASSWORD "$SELFHOSTDNS_PASSWORD"
+  # These values are domain dependent, so store them there
+  _savedomainconf SELFHOSTDNS_MAP "$SELFHOSTDNS_MAP"
+  _savedomainconf SELFHOSTDNS_MAP_LAST_USED_INTERNAL "$SELFHOSTDNS_MAP_LAST_USED_INTERNAL"
+}
+
+dns_selfhost_rm() {
+  fulldomain=$1
+  txt=$2
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txt"
+  _info "Creating and removing of records is not supported by selfhost API, will not delete anything."
+}