Hi, I'm John! I will help you with this.
Thanks for sharing the troubleshooting steps you've already tried.
You can also change the level of protection in the Junk Email Filter using this steps:
- In the same Settings (Settings > Mail > Junk email).
- From there, you can select the "Strict" option. Please note that this will put all other messages into the Junk Email folder if they are not from the Safe Senders and Domains list. So, I suggest building your Safe Senders and Domains list first to allow known senders into your inbox.
- You can also enable the option "Block attachments, pictures, and links from anyone not in my Safe Senders and Domains list" and in option "Trust email from my contacts".
- Click "Save" and monitor if the issue will persist.
Also, did this start suddenly today, or has it been happening for a while? A sudden wave like this can sometimes mean your email was exposed somewhere.
Click "Add comment" to let me know.
Regards,
John J.D.