Email Not Displaying Properly

Hi

The Emails sent by Post SMTP are not displaying correctly. It is displaying all the HTML See Screenshot of the Test email – https://prnt.sc/7WzVSlCKyC0i

I have tested by disabling the theme and reverting to the default theme and disabling all the plugins except Post SMTP. But that still didn’t work.

Here are details of Diagnostic Test details

Mailer: postsmtp
HostName: mikemundsfitness.co.uk
cURL Version: 7.84.0
OpenSSL Version: OpenSSL/1.1.1p
OS: Linux ceres.uksrv.co.uk 3.10.0-962.3.2.lve1.5.70.el7.x86_64 #1 SMP Mon May 30 08:45:55 UTC 2022 x86_64
PHP: Linux 8.1.13 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=Yes, zlib_encode=Yes
WordPress: 6.1.1 en_US UTF-8
WordPress Theme: Thrive Theme Builder
WordPress Plugins: ManageWP - Worker, Adminimize, Classic Editor, CMS Tree Page View, Duplicator, Facebook Chat Plugin - Live Chat Plugin for WordPress, Google Analyticator, Gravity Forms, Easy HTTPS (SSL) Redirection, iThemes Security Pro, Post SMTP, Thrive Clever Widgets, Thrive Leads, Thrive Product Manager, Thrive Architect, User Role by BestWebSoft, White Label CMS, Wordfence Security, WordPress Importer, Yoast SEO, Smush
WordPress wp_mail Owner: /home/mikemundsfitness/public_html/wp-content/plugins/post-smtp/Postman/PostmanWpMailBinder.php
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email, PostsmtpMailer->get_mail_args
WordPress wp_mail_from Filter(s): wordfence::fixWPMailFromAddress
Postman: 2.2.1
Postman Sender Domain (Envelope|Message):  | mikemundsfitness.co.uk
Postman Prevent Message Sender Override (Email|Name): Yes | Yes
Postman Active Transport: Default (smtp:none:none://localhost:25)
Postman Active Transport Status (Ready|Connected): No | Yes
Postman Deliveries (Success|Fail): 1 | 0
Postman PHP LogLevel: 20000