diff --git a/app/javascript/flavours/glitch/actions/compose.js b/app/javascript/flavours/glitch/actions/compose.js
index d2c049f341..350ee6fbbe 100644
--- a/app/javascript/flavours/glitch/actions/compose.js
+++ b/app/javascript/flavours/glitch/actions/compose.js
@@ -179,7 +179,7 @@ export function directCompose(account, routerHistory) {
   };
 }
 
-export function submitCompose(routerHistory) {
+export function submitCompose(routerHistory, overridePrivacy = null) {
   return function (dispatch, getState) {
     let status     = getState().getIn(['compose', 'text'], '');
     const media    = getState().getIn(['compose', 'media_attachments']);
@@ -228,7 +228,7 @@ export function submitCompose(routerHistory) {
         media_attributes,
         sensitive: getState().getIn(['compose', 'sensitive']) || (spoilerText.length > 0 && media.size !== 0),
         spoiler_text: spoilerText,
-        visibility: getState().getIn(['compose', 'privacy']),
+        visibility: overridePrivacy || getState().getIn(['compose', 'privacy']),
         poll: getState().getIn(['compose', 'poll'], null),
         language: getState().getIn(['compose', 'language']),
       },
diff --git a/app/javascript/flavours/glitch/features/compose/components/compose_form.jsx b/app/javascript/flavours/glitch/features/compose/components/compose_form.jsx
index 43e4a9d6cb..12873e2cc0 100644
--- a/app/javascript/flavours/glitch/features/compose/components/compose_form.jsx
+++ b/app/javascript/flavours/glitch/features/compose/components/compose_form.jsx
@@ -31,6 +31,7 @@ import { EditIndicator } from './edit_indicator';
 import { NavigationBar } from './navigation_bar';
 import { PollForm } from "./poll_form";
 import { ReplyIndicator } from './reply_indicator';
+import { SecondaryPrivacyButton } from './secondary_privacy_button';
 
 const allowedAroundShortCode = '><\u0085\u0020\u00a0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029\u0009\u000a\u000b\u000c\u000d';
 
@@ -50,6 +51,7 @@ class ComposeForm extends ImmutablePureComponent {
     spoiler: PropTypes.bool,
     spoilerAlwaysOn: PropTypes.bool,
     privacy: PropTypes.string,
+    sideArm: PropTypes.string,
     spoilerText: PropTypes.string,
     focusDate: PropTypes.instanceOf(Date),
     caretPosition: PropTypes.number,
@@ -96,6 +98,10 @@ class ComposeForm extends ImmutablePureComponent {
     if (e.keyCode === 13 && (e.ctrlKey || e.metaKey)) {
       this.handleSubmit();
     }
+
+    if (e.keyCode === 13 && e.altKey) {
+      this.handleSecondarySubmit();
+    }
   };
 
   getFulltextForCharacterCounting = () => {
@@ -110,7 +116,7 @@ class ComposeForm extends ImmutablePureComponent {
     return !(isSubmitting || isUploading || isChangingUpload || length(fulltext) > maxChars || (isOnlyWhitespace && !anyMedia));
   };
 
-  handleSubmit = (e) => {
+  handleSubmit = (e, overridePrivacy = null) => {
     if (this.props.text !== this.textareaRef.current.value) {
       // Something changed the text inside the textarea (e.g. browser extensions like Grammarly)
       // Update the state to match the current text
@@ -121,13 +127,18 @@ class ComposeForm extends ImmutablePureComponent {
       return;
     }
 
-    this.props.onSubmit(this.props.history || null);
+    this.props.onSubmit(this.props.history || null, overridePrivacy);
 
     if (e) {
       e.preventDefault();
     }
   };
 
+  handleSecondarySubmit = () => {
+    const { sideArm } = this.props;
+    this.handleSubmit(null, sideArm === 'none' ? null : sideArm);
+  };
+
   onSuggestionsClearRequested = () => {
     this.props.onClearSuggestions();
   };
@@ -303,6 +314,12 @@ class ComposeForm extends ImmutablePureComponent {
               </div>
 
               <div className='compose-form__submit'>
+                <SecondaryPrivacyButton
+                  disabled={!this.canSubmit()}
+                  privacy={this.props.sideArm}
+                  isEditing={this.props.isEditing}
+                  onClick={this.handleSecondarySubmit}
+                />
                 <Button
                   type='submit'
                   text={intl.formatMessage(this.props.isEditing ? messages.saveChanges : (this.props.isInReply ? messages.reply : messages.publish))}
diff --git a/app/javascript/flavours/glitch/features/compose/components/secondary_privacy_button.jsx b/app/javascript/flavours/glitch/features/compose/components/secondary_privacy_button.jsx
new file mode 100644
index 0000000000..c78d7b8617
--- /dev/null
+++ b/app/javascript/flavours/glitch/features/compose/components/secondary_privacy_button.jsx
@@ -0,0 +1,45 @@
+import PropTypes from 'prop-types';
+
+import { useIntl, defineMessages } from 'react-intl';
+
+import LockIcon from '@/material-icons/400-24px/lock.svg?react';
+import MailIcon from '@/material-icons/400-24px/mail.svg?react';
+import PublicIcon from '@/material-icons/400-24px/public.svg?react';
+import QuietTimeIcon from '@/material-icons/400-24px/quiet_time.svg?react';
+import { Button } from 'flavours/glitch/components/button';
+import { Icon } from 'flavours/glitch/components/icon';
+
+const messages = defineMessages({
+  public: { id: 'privacy.public.short', defaultMessage: 'Public' },
+  unlisted: { id: 'privacy.unlisted.short', defaultMessage: 'Quiet public' },
+  private: { id: 'privacy.private.short', defaultMessage: 'Followers' },
+  direct: { id: 'privacy.direct.short', defaultMessage: 'Specific people' },
+});
+
+export const SecondaryPrivacyButton = ({ disabled, privacy, isEditing, onClick }) => {
+  const intl = useIntl();
+
+  if (isEditing || !privacy || privacy === 'none') {
+    return null;
+  }
+
+  const privacyProps = {
+    direct: { icon: 'envelope', iconComponent: MailIcon, title: messages.direct },
+    private: { icon: 'lock', iconComponent: LockIcon, title: messages.private },
+    public: { icon: 'globe', iconComponent: PublicIcon, title: messages.public },
+    unlisted: { icon: 'unlock', iconComponent: QuietTimeIcon, title: messages.unlisted },
+  };
+
+  return (
+    <Button className='secondary-post-button' disabled={disabled} onClick={onClick} title={intl.formatMessage(privacyProps[privacy].title)}>
+      <Icon id={privacyProps[privacy].id} icon={privacyProps[privacy].iconComponent} />
+    </Button>
+  );
+};
+
+SecondaryPrivacyButton.propTypes = {
+  disabled: PropTypes.bool,
+  privacy: PropTypes.string,
+  isEditing: PropTypes.bool,
+  onClick: PropTypes.func.isRequired,
+};
diff --git a/app/javascript/flavours/glitch/features/compose/containers/compose_form_container.js b/app/javascript/flavours/glitch/features/compose/containers/compose_form_container.js
index 90de5c8de6..2c6c07e9b3 100644
--- a/app/javascript/flavours/glitch/features/compose/containers/compose_form_container.js
+++ b/app/javascript/flavours/glitch/features/compose/containers/compose_form_container.js
@@ -1,5 +1,7 @@
 import { connect } from 'react-redux';
 
+import { privacyPreference } from 'flavours/glitch/utils/privacy_preference';
+
 import {
   changeCompose,
   submitCompose,
@@ -12,6 +14,23 @@ import {
 } from '../../../actions/compose';
 import ComposeForm from '../components/compose_form';
 
+const sideArmPrivacy = state => {
+  const inReplyTo = state.getIn(['compose', 'in_reply_to']);
+  const replyPrivacy = inReplyTo ? state.getIn(['statuses', inReplyTo, 'visibility']) : null;
+  const sideArmBasePrivacy = state.getIn(['local_settings', 'side_arm']);
+  const sideArmRestrictedPrivacy = replyPrivacy ? privacyPreference(replyPrivacy, sideArmBasePrivacy) : null;
+  let sideArmPrivacy = null;
+  switch (state.getIn(['local_settings', 'side_arm_reply_mode'])) {
+  case 'copy':
+    sideArmPrivacy = replyPrivacy;
+    break;
+  case 'restrict':
+    sideArmPrivacy = sideArmRestrictedPrivacy;
+    break;
+  }
+  return sideArmPrivacy || sideArmBasePrivacy;
+};
+
 const mapStateToProps = state => ({
   text: state.getIn(['compose', 'text']),
   suggestions: state.getIn(['compose', 'suggestions']),
@@ -29,6 +48,7 @@ const mapStateToProps = state => ({
   anyMedia: state.getIn(['compose', 'media_attachments']).size > 0,
   isInReply: state.getIn(['compose', 'in_reply_to']) !== null,
   lang: state.getIn(['compose', 'language']),
+  sideArm: sideArmPrivacy(state),
 });
 
 const mapDispatchToProps = (dispatch) => ({
@@ -37,8 +57,8 @@ const mapDispatchToProps = (dispatch) => ({
     dispatch(changeCompose(text));
   },
 
-  onSubmit (router) {
-    dispatch(submitCompose(router));
+  onSubmit (router, overridePrivacy = null) {
+    dispatch(submitCompose(router, overridePrivacy));
   },
 
   onClearSuggestions () {
diff --git a/app/javascript/flavours/glitch/styles/components.scss b/app/javascript/flavours/glitch/styles/components.scss
index ffbf0c2aa8..3fa8d04124 100644
--- a/app/javascript/flavours/glitch/styles/components.scss
+++ b/app/javascript/flavours/glitch/styles/components.scss
@@ -750,10 +750,17 @@ body > [data-popper-placement] {
 
   &__submit {
     display: flex;
-    align-items: center;
-    flex: 1 1 auto;
+    flex: 1 0 100%; // glitch: always on its own line
     max-width: 100%;
     overflow: hidden;
+    gap: 5px; // glitch: handle secondary post privacy
+    align-items: stretch; // glitch: handle secondary post privacy
+
+    .button.secondary-post-button {
+      flex: 0 1 auto;
+      padding-top: 0;
+      padding-bottom: 0;
+    }
   }
 
   &__buttons {