If you use Wordpress and you've recently been having issues with your site not sending emails to customers - whether it's order emails from WooCommerce, or notifications from Contact Form 7 or Gravity Forms - then it's likely there's an issue with the PHP Mail sending from your server (or the connection from Wordpress to PHP Mail).
Either way, it's best to use SMTP to send emails, as they are much more deliverable, and this video shows you how to do it!
More ways to improve email deliverability: https://websiteright.co.uk/web-tools/...
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