( 'Bulk compression completed for %s', 'wp-smushit' ),
				'mail_desc'     => __( 'The bulk compress you actioned has successfully completed. Here’s a quick summary of the results:', 'wp-smushit' ),
				'total_title'   => __( 'Total image attachments', 'wp-smushit' ),
				'total_desc'    => __( 'The number of images analyzed during the bulk compress.', 'wp-smushit' ),
				'smushed_title' => __( 'Images compressed successfully', 'wp-smushit' ),
				'smushed_desc'  => __( 'The number of images successfully compressed.', 'wp-smushit' ),
				'failed_title'  => __( 'Images failed to compress', 'wp-smushit' ),
				'failed_desc'   => $failed_msg,
			);
		}

		return array(
			/* translators: %s: Site URL */
			'mail_title'    => __( 'Bulk Smush completed for %s', 'wp-smushit' ),
			'mail_desc'     => __( 'The bulk smush you actioned has successfully completed. Here’s a quick summary of the results:', 'wp-smushit' ),
			'total_title'   => __( 'Total image attachments', 'wp-smushit' ),
			'total_desc'    => __( 'The number of images analyzed during the bulk smush.', 'wp-smushit' ),
			'smushed_title' => __( 'Images smushed successfully', 'wp-smushit' ),
			'smushed_desc'  => __( 'The number of images successfully compressed.', 'wp-smushit' ),
			'failed_title'  => __( 'Images failed to smush', 'wp-smushit' ),
			'failed_desc'   => $failed_msg,
		);
	}

	/**
	 * Get upsell CDN content.
	 */
	private function get_upsell_content() {
		if ( WP_Smush::is_pro() ) {
			return;
		}
		$upsell_url = add_query_arg(
			array(
				'utm_source'   => 'smush',
				'utm_medium'   => 'plugin',
				'utm_campaign' => 'smush_bulksmush_bo_email',
			),
			'https://wpmudev.com/project/wp-smush-pro/'
		);
		return $this->view->get_template_content(
			'email/upsell-cdn',
			array(
				'upsell_url' => $upsell_url,
			)
		);
	}
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'Smush\Core\Modules\Bulk\Mail' not found in /home/deltakeprico/public_html/wp-content/plugins/wp-smushit/core/modules/bulk/class-background-bulk-smush.php:45
Stack trace:
#0 /home/deltakeprico/public_html/wp-content/plugins/wp-smushit/core/modules/bulk/class-background-bulk-smush.php(33): Smush\Core\Modules\Bulk\Background_Bulk_Smush-&gt;__construct()
#1 /home/deltakeprico/public_html/wp-content/plugins/wp-smushit/core/media-library/class-media-library-last-process.php(43): Smush\Core\Modules\Bulk\Background_Bulk_Smush::get_instance()
#2 /home/deltakeprico/public_html/wp-content/plugins/wp-smushit/core/media-library/class-media-library-last-process.php(34): Smush\Core\Media_Library\Media_Library_Last_Process-&gt;__construct()
#3 /home/deltakeprico/public_html/wp-content/plugins/wp-smushit/core/modules/class-product-analytics-controller.php(56): Smush\Core\Media_Library\Media_Library_Last_Process::get_instance()
#4 /home/deltakeprico/public_html/wp-content/plugins/wp-smushit/core/class-modules. in <b>/home/deltakeprico/public_html/wp-content/plugins/wp-smushit/core/modules/bulk/class-background-bulk-smush.php</b> on line <b>45</b><br />