Hi @chriskrisfof,
About 1:
As different ISPs and email service providers use different factors as metrics to filter spam or block emails, some email addresses?may receive the notification email, while some do not. The best way that we know to improve email deliverability would be to use an SMTP plugin to configure the website to send authenticated emails.
If you’d prefer not to use the paid version of WP Mail SMTP for now, you can consider using its free version, WP Mail SMTP Lite.
The WP Mail SMTP Lite plugin comes with popular mailer options, such as Gmail, SMTP.com, Sendinblue, SendGrid, Mailgun, and the “Other” SMTP option. Any of these can be configured to improve the email deliverability of your site as well.
In case it helps to share, you can check out a comparison of all available mailer options in WP Mail SMTP with links to their setup tutorials in the guide here.
If you have any questions while setting up WP Mail SMTP Lite, please feel welcome to use the WP Mail SMTP www.ads-software.com support forum where we provide complimentary support for WP Mail SMTP Lite users.
About 2:
Thank you for the information, and bringing this to our attention!
I reported this issue to our team for further investigation. I will be sure to reach out to you as soon as we have any updates on this matter.
Thanks again!