I’m using Google. Here is the log:
Mailer: postsmtp
HostName: w*******d.com
cURL Version: 7.29.0
OpenSSL Version: NSS/3.53.1
OS: Linux li945-80.members.linode.com 3.10.0-1160.24.1.el7.x86_64 #1 SMP Thu Apr 8 19:51:47 UTC 2021 x86_64
PHP: Linux 7.4.26 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=Yes, zlib_encode=Yes
WordPress: 5.9.3 en_US UTF-8
WordPress Theme: Divi
WordPress Plugins: Template Library and Redux Framework, 404 Solution, Admin Menu Organizer II, Akismet Anti-Spam, Analytify - Google Analytics Dashboard Widget, Contact Us all-in-one button, ATUM Inventory Management for WooCommerce, AutomateWoo, Bloom, WordPress Geo Plugin, Classic Editor, Code Snippets, Disable Admin Notices premium, Disable Admin Notices Individually, Duplicator Pro, Error Log Monitor, Health Check & Troubleshooting, Hide Admin Bar From Front End, Imagify, Invisible reCaptcha, LiteSpeed Cache, Mailster - Email Newsletter Plugin for WordPress, MainWP Child, Pending Payment Reminder for WooCommerce, Permalink Manager Pro, Plugin Activation Date, Post SMTP, Product Code for WooCommerce, PWA for WP, Really Simple SSL, Rank Math SEO PRO, Rank Math SEO, Shortcodes Ultimate, Simple Post Redirect, WooCommerce Split Orders, Supreme Modules Lite - Divi Theme, Extra Theme and Divi Builder, Swap Google Fonts Display, Upload Larger Plugins, User Switching, WC Duplicate Order, Woocommerce Partial Shipment, Widget CSS Classes, Widget Logic, WooCommerce Order Test, Product Feed PRO for WooCommerce, Virtual Reviews for WooCommerce, WooCommerce Address Validation, WooCommerce Advanced Bulk Edit, WooCommerce Advanced Shipping, WooCommerce Anti Fraud, WooCommerce Cart Notices, Cart Reports for WooCommerce, WooCommerce Cost of Goods, WooCommerce Create Customer on Order, WooCommerce Hear About Us, WooCommerce Notification Premium, WooCommerce Order Status Manager, WooCommerce Pay Email Invoice Without Login, WooCommerce Print Invoices/Packing Lists, WooCommerce Product Add-ons, WooCommerce Product Bundles, WooCommerce Shipping & Tax, WooCommerce Smart Coupons, WooCommerce Social Login, WooCommerce Waitlist, WooCommerce, Wordfence Security, WordPress TotalDesk, WordPress Importer, Analytify - UTM Campaigns Tracking, Analytify - Goals Tracking, Analytify Pro, Analytify - WooCommerce Tracking, Analytify - Google Analytics Dashboard, Asset CleanUp Pro: Page Speed Booster, WP Crontrol, WP-Lister Pro for eBay, WordPress Persistent Login
WordPress wp_mail Owner: /home/w*******d.com/public_html/wp-content/plugins/post-smtp/Postman/PostmanWpMailBinder.php
WordPress wp_mail Filter(s): PostsmtpMailer->get_mail_args
WordPress wp_mail_from Filter(s): wordfence::fixWPMailFromAddress
Postman: 2.0.26
Postman Sender Domain (Envelope|Message): w*******d.com | w*******d.com
Postman Prevent Message Sender Override (Email|Name): No | No
Postman Active Transport: Gmail API (https:oauth2://www.googleapis.com:443)
Postman Active Transport Status (Ready|Connected): Yes | Yes
Postman Deliveries (Success|Fail): 4096 | 20034