After posting a blog on website subscribers are getting many emails in spam

Hello Support,

We used Subscribe to Category plugin for the emails notification to the subscribers for the newly created post according the selected category, but yesterday After posting a blog on our website i.e https://www.naaccr.org and our subscribers are getting many emails that look like spam in forming them that something had been posted one of our subscribers even got 10 emails about it please look into the screen shot https://www.screencast.com/t/wZutOMpoq.

So our issue is why email notifications are went into spam and same email is sent more than 10 times to the same subscriber, Plz look into this issue and notify us of follow-up replies via email.

Thanks,
Mahesh Waghmare
email : [email protected]

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