[v1.20.0] Convert newlines to line breaks when forcing HTML

CHANGELOG.md

@@ -4,6 +4,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.20.0]
+- Convert newlines to line breaks when forcing HTML
+
 ## [1.19.1]
 - Fix warning when logging sends with a null To address
 

README.md

@@ -102,8 +102,8 @@ The plugin supports using the `wp_mail_from_name` filter for manually setting a
 [Can I use the ActiveCampaign Postmark for WordPress plugin with Divi contact forms?](https://postmarkapp.com/support/article/1128-can-i-use-the-postmark-for-wordpress-plugin-with-divi-contact-forms)
 
 ## Changelog
-## [1.19.1]
-- Fix warning when logging sends with a null To address
+## [1.20.0]
+- Convert newlines to line breaks when forcing HTML
 
 --------
 

postmark.php

@@ -3,7 +3,7 @@
  * Plugin Name: ActiveCampaign Postmark (Official)
  * Plugin URI: https://postmarkapp.com/
  * Description: Overrides wp_mail to send emails through ActiveCampaign Postmark
- * Version: 1.19.1
+ * Version: 1.20.0
  * Requires PHP: 7.0
  * Requires at least: 5.3
  * Tested up to: 6.2
@@ -41,7 +41,7 @@ class Postmark_Mail {
 	 *
 	 * @var string
 	 */
-	public static $POSTMARK_VERSION = '1.19.1';
+	public static $POSTMARK_VERSION = '1.20.0';
 
 	/**
 	 * ActiveCampaign Postmark Plugin Directory.

readme.txt

@@ -4,7 +4,7 @@ Tags: postmark, email, smtp, notifications, wp_mail, wildbit
 Requires PHP: 7.0
 Requires at least: 5.3
 Tested up to: 6.2
-Stable tag: 1.19.1
+Stable tag: 1.20.0
 
 The *officially-supported* ActiveCampaign Postmark plugin for Wordpress.
 
@@ -133,8 +133,8 @@ At [ActiveCampaign](https://www.activecampaign.com/?utm_source=postmark&utm_medi
 1. ActiveCampaign Postmark WP Plugin Settings screen.
 
 == Changelog ==
-= v1.19.1 =
-* Fix warning when logging sends with a null To address
+= v1.20.0 =
+* Convert newlines to line breaks when forcing HTML
 
 --------
 

wp-mail.php

@@ -237,6 +237,10 @@ function wp_mail( $to, $subject, $message, $headers = '', $attachments = array()
 	}
 
 	if ( 1 === (int) $settings['force_html'] || 'text/html' === $content_type || 1 === $track_opens ) {
+		# convert "/n" newlines in plain text to <br> tags in forced HTML
+		if ( 'text/plain' === $content_type ) {
+			$message = str_replace( "\n", "<br>", $message );
+		}
 		$body['HtmlBody'] = $message;
 		// The user really, truly wants this sent as HTML, don't send it as text, too.
 		// For historical reasons, we can't "force html" and "track opens" set both html and text bodies,