diff --git a/README.md b/README.md
index ef3d01d..3d35f7c 100755
--- a/README.md
+++ b/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
-## [1.20.0]
-- Convert newlines to line breaks when forcing HTML
+## [1.19.1]
+- Fix warning when logging sends with a null To address
 
 --------
 
diff --git a/postmark.php b/postmark.php
index f4c0a46..ef63704 100644
--- a/postmark.php
+++ b/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: 1.20.0
+ * Version: 1.19.1
  * Requires PHP: 7.0
  * Requires at least: 5.3
  * Tested up to: 6.4
@@ -41,7 +41,7 @@ class Postmark_Mail {
 	 *
 	 * @var string
 	 */
-	public static $POSTMARK_VERSION = '1.20.0';
+	public static $POSTMARK_VERSION = '1.19.1';
 
 	/**
 	 * ActiveCampaign Postmark Plugin Directory.
diff --git a/readme.txt b/readme.txt
index dfd7223..887e2e9 100644
--- a/readme.txt
+++ b/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: 6.4
-Stable tag: 1.20.0
+Stable tag: 1.19.1
 
 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 ==
-= v1.20.0 =
-* Convert newlines to line breaks when forcing HTML
+= v1.19.1 =
+* Fix warning when logging sends with a null To address
 
 --------
 
diff --git a/wp-mail.php b/wp-mail.php
index 11cdcd7..90894c3 100644
--- a/wp-mail.php
+++ b/wp-mail.php
@@ -237,10 +237,6 @@ 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,