Here are the Post SMTP diagnostics log
Mailer: postsmtp
HostName: ticktockwatch.co.uk
cURL Version: 7.88.0
OpenSSL Version: OpenSSL/1.1.1t
OS: Linux ngx343.inmotionhosting.com 3.10.0-962.3.2.lve1.5.77.el7.x86_64 #1 SMP Mon Dec 12 07:06:14 EST 2022 x86_64
PHP: Linux 8.0.28 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=No, zlib_encode=Yes
WordPress: 6.1.1 en_GB UTF-8
WordPress Theme: Carrelage Theme
WordPress Plugins: Abandoned Cart Recovery, Advanced Custom Fields, Classic Editor, Contact Form 7, CookieYes | GDPR Cookie Consent, GTM4WP, Facebook for WooCommerce, Google Listings and Ads, Hotjar, Jetpack, Klarna On-Site Messaging for WooCommerce, Klarna Order Management for WooCommerce, Klarna Payments for WooCommerce, LiteSpeed Cache, Mailchimp for WooCommerce, Post SMTP, Rapyd Payments, Really Simple SSL, ReferralCandy for WooCommerce, ShareASale WooCommerce Tracker, Trustpilot-reviews, UpdraftPlus – Backup/Restore, WooCommerce Conversion Tracking, WooCommerce Email Template Customizer Premium, Extra Product Sorting Options for WooCommerce, Pixel Manager for WooCommerce, WooCommerce – ShipStation Integration, WooCommerce, Yoast SEO, WP Rocket | Redirect HTTP to HTTPS, Widget Disable, WPS Hide Login, YITH WooCommerce Ajax Product Filter Premium, YITH WooCommerce Ajax Search, YITH WooCommerce Checkout Manager, YITH WooCommerce Multi-step Checkout Premium, YITH WooCommerce SMS Notifications Premium
WordPress wp_mail Owner: /home/tickto8/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): change_contact_from_address
WordPress phpmailer_init Action(s): wpcf7_phpmailer_init, WC_Email_New_Order->handle_multipart, WC_Email_Cancelled_Order->handle_multipart, WC_Email_Failed_Order->handle_multipart, WC_Email_Customer_On_Hold_Order->handle_multipart, WC_Email_Customer_Processing_Order->handle_multipart, WC_Email_Customer_Completed_Order->handle_multipart, WC_Email_Customer_Refunded_Order->handle_multipart, WC_Email_Customer_Invoice->handle_multipart, WC_Email_Customer_Note->handle_multipart, WC_Email_Customer_Reset_Password->handle_multipart, WC_Email_Customer_New_Account->handle_multipart, AF_Email_Admin_Abandoned_Cart->handle_multipart, AF_Email_Admin_Recovered_Cart->handle_multipart, AF_Email_Abandoned_Cart->handle_multipart, AF_Email_Pending_Order->handle_multipart
Postman: 2.4.7
Postman Sender Domain (Envelope|Message): gmail.com | ticktockwatch.co.uk
Postman Prevent Message Sender Override (Email|Name): Yes | Yes
Postman Active Transport: Sendinblue (https://smtp-relay.sendinblue.com:587)
Postman Active Transport Status (Ready|Connected): Yes | Yes
Postman Deliveries (Success|Fail): 2980 | 3991