diff --git a/mailpoet/assets/js/src/common/confirm_alert.jsx b/mailpoet/assets/js/src/common/confirm_alert.jsx
index a2b79e916d..1c4828a50f 100644
--- a/mailpoet/assets/js/src/common/confirm_alert.jsx
+++ b/mailpoet/assets/js/src/common/confirm_alert.jsx
@@ -1,7 +1,9 @@
-import { MailPoet } from 'mailpoet';
+import { __ } from '@wordpress/i18n';
 import PropTypes from 'prop-types';
 import ReactDOMServer from 'react-dom/server';
 
+import { MailPoet } from 'mailpoet';
+
 function ConfirmAlert(props) {
   MailPoet.Modal.popup({
     title: props.title,
@@ -49,9 +51,9 @@ ConfirmAlert.propTypes = {
 };
 
 ConfirmAlert.defaultProps = {
-  title: MailPoet.I18n.t('confirmTitle'),
-  cancelLabel: MailPoet.I18n.t('cancelLabel'),
-  confirmLabel: MailPoet.I18n.t('confirmLabel'),
+  title: __('Confirm to proceed', 'mailpoet'),
+  cancelLabel: __('Cancel', 'mailpoet'),
+  confirmLabel: __('Confirm', 'mailpoet'),
 };
 
 export function confirmAlert(props) {
diff --git a/mailpoet/assets/js/src/listing/bulk_actions.jsx b/mailpoet/assets/js/src/listing/bulk_actions.jsx
index ed565929a3..d5c36be91b 100644
--- a/mailpoet/assets/js/src/listing/bulk_actions.jsx
+++ b/mailpoet/assets/js/src/listing/bulk_actions.jsx
@@ -1,6 +1,6 @@
 import { Component } from 'react';
+import { __ } from '@wordpress/i18n';
 
-import { MailPoet } from 'mailpoet';
 import PropTypes from 'prop-types';
 import { withBoundary } from '../common';
 
@@ -79,7 +79,7 @@ class ListingBulkActions extends Component {
         data-automation-id="listing-bulk-actions"
       >
         <span className="screen-reader-text">
-          {MailPoet.I18n.t('selectBulkAction')}
+          {__('Select bulk action', 'mailpoet')}
         </span>
 
         <div>
diff --git a/mailpoet/assets/js/src/listing/filters.jsx b/mailpoet/assets/js/src/listing/filters.jsx
index 9e68ca867a..8c60f4b87b 100644
--- a/mailpoet/assets/js/src/listing/filters.jsx
+++ b/mailpoet/assets/js/src/listing/filters.jsx
@@ -1,9 +1,9 @@
 import { Component } from 'react';
+import { __ } from '@wordpress/i18n';
 import jQuery from 'jquery';
 import PropTypes from 'prop-types';
 
 import { Button } from 'common/button/button.tsx';
-import { MailPoet } from 'mailpoet';
 import { Select } from 'common/form/select/select.tsx';
 import { withBoundary } from '../common';
 
@@ -74,7 +74,7 @@ class ListingFilters extends Component {
             onClick={this.handleEmptyTrash}
             automationId="empty_trash"
           >
-            {MailPoet.I18n.t('emptyTrash')}
+            {__('Empty Trash', 'mailpoet')}
           </Button>
         </span>
       );
diff --git a/mailpoet/assets/js/src/listing/header.jsx b/mailpoet/assets/js/src/listing/header.jsx
index 565304baf3..d1483d96d4 100644
--- a/mailpoet/assets/js/src/listing/header.jsx
+++ b/mailpoet/assets/js/src/listing/header.jsx
@@ -1,8 +1,8 @@
 import { Component } from 'react';
 import PropTypes from 'prop-types';
+import { __ } from '@wordpress/i18n';
 
 import { Checkbox } from 'common/form/checkbox/checkbox.tsx';
-import { MailPoet } from 'mailpoet';
 import { ListingColumn } from './listing_column.jsx';
 
 class ListingHeader extends Component {
@@ -37,7 +37,7 @@ class ListingHeader extends Component {
       checkbox = (
         <th className="manage-column column-cb mailpoet-listing-check-column">
           <label className="screen-reader-text" htmlFor="select_all">
-            {MailPoet.I18n.t('selectAll')}
+            {__('Select All', 'mailpoet')}
           </label>
           <Checkbox
             name="select_all"
diff --git a/mailpoet/assets/js/src/listing/listing.jsx b/mailpoet/assets/js/src/listing/listing.jsx
index 1e3ffe1097..346deb2f85 100644
--- a/mailpoet/assets/js/src/listing/listing.jsx
+++ b/mailpoet/assets/js/src/listing/listing.jsx
@@ -1,5 +1,6 @@
 import jQuery from 'jquery';
 import { Component } from 'react';
+import { __ } from '@wordpress/i18n';
 import _ from 'underscore';
 import classnames from 'classnames';
 import PropTypes from 'prop-types';
@@ -579,12 +580,12 @@ class ListingComponent extends Component {
       bulkActions = [
         {
           name: 'restore',
-          label: MailPoet.I18n.t('restore'),
+          label: __('Restore', 'mailpoet'),
           onSuccess: this.props.messages.onRestore,
         },
         {
           name: 'delete',
-          label: MailPoet.I18n.t('deletePermanently'),
+          label: __('Delete permanently', 'mailpoet'),
           onSuccess: this.props.messages.onDelete,
         },
       ];
diff --git a/mailpoet/assets/js/src/newsletters/listings/heading_steps.tsx b/mailpoet/assets/js/src/newsletters/listings/heading_steps.tsx
index 3483f1f811..95502ca12a 100644
--- a/mailpoet/assets/js/src/newsletters/listings/heading_steps.tsx
+++ b/mailpoet/assets/js/src/newsletters/listings/heading_steps.tsx
@@ -1,6 +1,5 @@
 import { ReactNode } from 'react';
 import { Location } from 'history';
-import { MailPoet } from 'mailpoet';
 import { Icon, video } from '@wordpress/icons';
 import { __ } from '@wordpress/i18n';
 import { HideScreenOptions } from '../../common/hide_screen_options/hide_screen_options';
@@ -67,7 +66,7 @@ function TutorialIcon(): JSX.Element {
         role="button"
         onClick={displayTutorial}
         className="mailpoet-top-bar-beamer"
-        title={MailPoet.I18n.t('topBarTutorial')}
+        title={__('Tutorial', 'mailpoet')}
         tabIndex={0}
         onKeyDown={(event) => {
           if (
@@ -80,7 +79,7 @@ function TutorialIcon(): JSX.Element {
         }}
       >
         <Icon icon={video} />
-        <span>{MailPoet.I18n.t('topBarTutorial')}</span>
+        <span>{__('Tutorial', 'mailpoet')}</span>
       </a>
       <span id="beamer-empty-element" />
     </div>
diff --git a/mailpoet/assets/js/src/newsletters/send/congratulate/success_pitch_mss.tsx b/mailpoet/assets/js/src/newsletters/send/congratulate/success_pitch_mss.tsx
index f221c2ff76..993f9a52cb 100644
--- a/mailpoet/assets/js/src/newsletters/send/congratulate/success_pitch_mss.tsx
+++ b/mailpoet/assets/js/src/newsletters/send/congratulate/success_pitch_mss.tsx
@@ -1,6 +1,5 @@
-import { __ } from '@wordpress/i18n';
+import { __, _x } from '@wordpress/i18n';
 import { useState } from 'react';
-import { MailPoet } from 'mailpoet';
 import ReactStringReplace from 'react-string-replace';
 
 import { WelcomeWizardStepLayoutBody } from 'wizard/layout/step_layout_body.jsx';
@@ -63,14 +62,25 @@ export function PitchMss(props: Props): JSX.Element {
             )}
           </Heading>
           <p>
-            {MailPoet.I18n.t(
-              props.subscribersCount < 1000
-                ? 'congratulationsMSSPitchFreeSubtitle'
-                : 'congratulationsMSSPitchNotFreeSubtitle',
-            )}
+            {props.subscribersCount < 1000
+              ? _x(
+                  'Did you know? Users with 1,000 subscribers or less get the Starter plan for free.',
+                  'Promotion for our email sending service: Paragraph',
+                  'mailpoet',
+                )
+              : _x(
+                  'Starting at only $10 per month, MailPoet Business offers the following features',
+                  'Promotion for our email sending service: Paragraph',
+                  'mailpoet',
+                )}
           </p>
           <Heading level={5}>
-            {MailPoet.I18n.t('congratulationsMSSPitchFreeListTitle')}:
+            {_x(
+              'You’ll get',
+              'Promotion for our email sending service: Paragraph',
+              'mailpoet',
+            )}
+            :
           </Heading>
           <FreeBenefitsList />
 
@@ -98,25 +108,13 @@ export function PitchMss(props: Props): JSX.Element {
               window.open(props.purchaseUrl);
               next();
             }}
-          >
-            {MailPoet.I18n.t('congratulationsMSSPitchFreeButton')}
-          </Button>
-          <Button
-            isFullWidth
-            variant="tertiary"
-            onClick={next}
-            onKeyDown={(event) => {
-              if (
-                ['keydown', 'keypress'].includes(event.type) &&
-                ['Enter', ' '].includes(event.key)
-              ) {
-                event.preventDefault();
-                next();
-              }
-            }}
             withSpinner={isClosing}
           >
-            {MailPoet.I18n.t('congratulationsMSSPitchNoThanks')}
+            {_x(
+              'Sign up for free',
+              'Promotion for our email sending service: Button',
+              'mailpoet',
+            )}
           </Button>
         </div>
       </WelcomeWizardStepLayoutBody>
diff --git a/mailpoet/assets/js/src/newsletters/send/date_text.jsx b/mailpoet/assets/js/src/newsletters/send/date_text.jsx
index 3fa41f15df..8335d92d9f 100644
--- a/mailpoet/assets/js/src/newsletters/send/date_text.jsx
+++ b/mailpoet/assets/js/src/newsletters/send/date_text.jsx
@@ -1,5 +1,5 @@
 import { Component } from 'react';
-import { __ } from '@wordpress/i18n';
+import { __, _x } from '@wordpress/i18n';
 import PropTypes from 'prop-types';
 import { registerLocale } from 'react-datepicker';
 import locale from 'date-fns/locale/en-US';
@@ -10,53 +10,53 @@ import { MailPoet } from 'mailpoet';
 
 const monthValues = {
   abbreviated: [
-    MailPoet.I18n.t('januaryShort'),
-    MailPoet.I18n.t('februaryShort'),
-    MailPoet.I18n.t('marchShort'),
-    MailPoet.I18n.t('aprilShort'),
-    MailPoet.I18n.t('mayShort'),
-    MailPoet.I18n.t('juneShort'),
-    MailPoet.I18n.t('julyShort'),
-    MailPoet.I18n.t('augustShort'),
-    MailPoet.I18n.t('septemberShort'),
-    MailPoet.I18n.t('octoberShort'),
-    MailPoet.I18n.t('novemberShort'),
-    MailPoet.I18n.t('decemberShort'),
+    __('Jan', 'mailpoet'),
+    __('Feb', 'mailpoet'),
+    __('Mar', 'mailpoet'),
+    __('Apr', 'mailpoet'),
+    __('May', 'mailpoet'),
+    __('Jun', 'mailpoet'),
+    __('Jul', 'mailpoet'),
+    __('Aug', 'mailpoet'),
+    __('Sep', 'mailpoet'),
+    __('Oct', 'mailpoet'),
+    __('Nov', 'mailpoet'),
+    __('Dec', 'mailpoet'),
   ],
   wide: [
-    MailPoet.I18n.t('january'),
-    MailPoet.I18n.t('february'),
-    MailPoet.I18n.t('march'),
-    MailPoet.I18n.t('april'),
-    MailPoet.I18n.t('may'),
-    MailPoet.I18n.t('june'),
-    MailPoet.I18n.t('july'),
-    MailPoet.I18n.t('august'),
-    MailPoet.I18n.t('september'),
-    MailPoet.I18n.t('october'),
-    MailPoet.I18n.t('november'),
-    MailPoet.I18n.t('december'),
+    __('January', 'mailpoet'),
+    __('February', 'mailpoet'),
+    __('March', 'mailpoet'),
+    __('April', 'mailpoet'),
+    __('May', 'mailpoet'),
+    __('June', 'mailpoet'),
+    __('July', 'mailpoet'),
+    __('August', 'mailpoet'),
+    __('September', 'mailpoet'),
+    __('October', 'mailpoet'),
+    __('November', 'mailpoet'),
+    __('December', 'mailpoet'),
   ],
 };
 
 const dayValues = {
   narrow: [
-    MailPoet.I18n.t('sundayMin'),
-    MailPoet.I18n.t('mondayMin'),
-    MailPoet.I18n.t('tuesdayMin'),
-    MailPoet.I18n.t('wednesdayMin'),
-    MailPoet.I18n.t('thursdayMin'),
-    MailPoet.I18n.t('fridayMin'),
-    MailPoet.I18n.t('saturdayMin'),
+    _x('S', 'Sunday - one letter abbreviation', 'mailpoet'),
+    _x('M', 'Monday - one letter abbreviation', 'mailpoet'),
+    _x('T', 'Tuesday - one letter abbreviation', 'mailpoet'),
+    _x('W', 'Wednesday - one letter abbreviation', 'mailpoet'),
+    _x('T', 'Thursday - one letter abbreviation', 'mailpoet'),
+    _x('F', 'Friday - one letter abbreviation', 'mailpoet'),
+    _x('S', 'Saturday - one letter abbreviation', 'mailpoet'),
   ],
   abbreviated: [
-    MailPoet.I18n.t('sundayShort'),
-    MailPoet.I18n.t('mondayShort'),
-    MailPoet.I18n.t('tuesdayShort'),
-    MailPoet.I18n.t('wednesdayShort'),
-    MailPoet.I18n.t('thursdayShort'),
-    MailPoet.I18n.t('fridayShort'),
-    MailPoet.I18n.t('saturdayShort'),
+    __('Sun', 'mailpoet'),
+    __('Mon', 'mailpoet'),
+    __('Tue', 'mailpoet'),
+    __('Wed', 'mailpoet'),
+    __('Thu', 'mailpoet'),
+    __('Fri', 'mailpoet'),
+    __('Sat', 'mailpoet'),
   ],
   wide: [
     __('Sunday', 'mailpoet'),
diff --git a/mailpoet/assets/js/src/notices/mailer_error.tsx b/mailpoet/assets/js/src/notices/mailer_error.tsx
index 7517cf69e4..820b28e755 100644
--- a/mailpoet/assets/js/src/notices/mailer_error.tsx
+++ b/mailpoet/assets/js/src/notices/mailer_error.tsx
@@ -1,8 +1,10 @@
 import { ReactNodeArray, useState } from 'react';
-import { MailPoet } from 'mailpoet';
+import { __ } from '@wordpress/i18n';
 import ReactStringReplace from 'react-string-replace';
 import classnames from 'classnames';
 
+import { MailPoet } from 'mailpoet';
+
 const resumeMailerSending = () =>
   MailPoet.Ajax.post({
     api_version: window.mailpoet_api_version,
@@ -10,7 +12,7 @@ const resumeMailerSending = () =>
     action: 'resumeSending',
   })
     .done(() => {
-      MailPoet.Notice.success(MailPoet.I18n.t('mailerSendingResumedNotice'));
+      MailPoet.Notice.success(__('Sending has been resumed.', 'mailpoet'));
       if (window.mailpoet_listing) {
         window.mailpoet_listing.forceUpdate();
       }
@@ -124,7 +126,7 @@ export function MailerError({
   });
   if (code) {
     message += message ? ', ' : '';
-    message += MailPoet.I18n.t('mailerErrorCode').replace('%1$s', code);
+    message += __('Error code: %1$s', 'mailpoet').replace('%1$s', code);
   }
 
   // allow <a> tags with some attributes
@@ -202,7 +204,7 @@ export function MailerError({
                 .catch(() => {});
             }}
           >
-            {MailPoet.I18n.t('mailerResumeSendingAfterUpgradeButton')}
+            {__('I have upgraded my subscription, resume sending', 'mailpoet')}
           </a>
         </p>
       </div>
@@ -213,8 +215,14 @@ export function MailerError({
     <div className={className}>
       <p>
         {mtaLog.error.operation === 'send'
-          ? MailPoet.I18n.t('mailerSendErrorNotice').replace('%1$s', mtaMethod)
-          : MailPoet.I18n.t('mailerConnectionErrorNotice')}
+          ? __(
+              'Sending has been paused due to a technical issue with %1$s',
+              'mailpoet',
+            ).replace('%1$s', mtaMethod)
+          : __(
+              'Sending is paused because the following connection issue prevents MailPoet from delivering emails',
+              'mailpoet',
+            )}
         : <i>{message}</i>
       </p>
       {mtaMethod === 'PHPMail' ? (
@@ -233,7 +241,7 @@ export function MailerError({
               .catch(() => {});
           }}
         >
-          {MailPoet.I18n.t('mailerResumeSendingButton')}
+          {__('Resume sending', 'mailpoet')}
         </a>
       </p>
     </div>
diff --git a/mailpoet/tests/acceptance/Newsletters/DuplicateAutomaticEmailCest.php b/mailpoet/tests/acceptance/Newsletters/DuplicateAutomaticEmailCest.php
index 4dc809ee69..837d6cb6e3 100644
--- a/mailpoet/tests/acceptance/Newsletters/DuplicateAutomaticEmailCest.php
+++ b/mailpoet/tests/acceptance/Newsletters/DuplicateAutomaticEmailCest.php
@@ -22,6 +22,6 @@ class DuplicateAutomaticEmailCest {
     $i->waitForText('Email "Copy of ' . $emailSubject . '" has been duplicated.', 20);
     $i->waitForListingItemsToLoad();
     $i->clickItemRowActionByItemName('Copy of ' . $emailSubject, 'Edit');
-    $i->waitForElement('[data-automation-id="newsletter_title"]', 20);
+    $i->waitForElement('[data-automation-id="newsletter_title"]', 50);
   }
 }
diff --git a/mailpoet/views/layout.html b/mailpoet/views/layout.html
index 80772ae487..92adecea20 100644
--- a/mailpoet/views/layout.html
+++ b/mailpoet/views/layout.html
@@ -127,7 +127,6 @@ jQuery('#adminmenu #toplevel_page_mailpoet-newsletters')
 <%= localize({
   'topBarLogoTitle': __('Back to section root'),
   'topBarUpdates': __('Updates'),
-  'topBarTutorial': __('Tutorial'),
   'whatsNew': __("What’s new"),
   'updateMailPoetNotice': __('[link]Update MailPoet[/link] to see the latest changes'),
   'ajaxFailedErrorMessage': __('An error has happened while performing a request, the server has responded with response code %d'),
@@ -135,7 +134,6 @@ jQuery('#adminmenu #toplevel_page_mailpoet-newsletters')
   'senderEmailAddressWarning1': _x('You might not reach the inbox of your subscribers if you use this email address.', 'In the last step, before sending a newsletter. URL: ?page=mailpoet-newsletters#/send/2'),
   'senderEmailAddressWarning2': _x('Use an address like %1$s for the Sender and put %2$s in the <em>Reply-to</em> field below.', 'In the last step, before sending a newsletter. URL: ?page=mailpoet-newsletters#/send/2'),
   'senderEmailAddressWarning3': _x('Read more.'),
-  'mailerSendingResumedNotice': __('Sending has been resumed.'),
   'mailerSendingNotResumedUnauthorized': __('Failed to resume sending because the email address is unauthorized. Please authorize it and try again.'),
   'dismissNotice': __('Dismiss this notice.'),
 
@@ -214,44 +212,6 @@ jQuery('#adminmenu #toplevel_page_mailpoet-newsletters')
 
   'close': __('Close'),
   'today': __('Today'),
-  'january': __('January'),
-  'february': __('February'),
-  'march': __('March'),
-  'april': __('April'),
-  'may': __('May'),
-  'june': __('June'),
-  'july': __('July'),
-  'august': __('August'),
-  'september': __('September'),
-  'october': __('October'),
-  'november': __('November'),
-  'december': __('December'),
-  'januaryShort': __('Jan'),
-  'februaryShort': __('Feb'),
-  'marchShort': __('Mar'),
-  'aprilShort': __('Apr'),
-  'mayShort': __('May'),
-  'juneShort': __('Jun'),
-  'julyShort': __('Jul'),
-  'augustShort': __('Aug'),
-  'septemberShort': __('Sep'),
-  'octoberShort': __('Oct'),
-  'novemberShort': __('Nov'),
-  'decemberShort': __('Dec'),
-  'sundayShort': __('Sun'),
-  'mondayShort': __('Mon'),
-  'tuesdayShort': __('Tue'),
-  'wednesdayShort': __('Wed'),
-  'thursdayShort': __('Thu'),
-  'fridayShort': __('Fri'),
-  'saturdayShort': __('Sat'),
-  'sundayMin': _x('S', 'Sunday - one letter abbreviation'),
-  'mondayMin': _x('M', 'Monday - one letter abbreviation'),
-  'tuesdayMin': _x('T', 'Tuesday - one letter abbreviation'),
-  'wednesdayMin': _x('W', 'Wednesday - one letter abbreviation'),
-  'thursdayMin': _x('T', 'Thursday - one letter abbreviation'),
-  'fridayMin': _x('F', 'Friday - one letter abbreviation'),
-  'saturdayMin': _x('S', 'Saturday - one letter abbreviation'),
 }) %>
 <% block translations %><% endblock %>