Are you using yahoo mail and when you are trying to send the mails it is going in spam, if this is happening with you then you are not alone i have also faced this issue a few days back and i have also solved it my issue by my own. Actually, this happens when yahoo considers your account has been hacked and yahoo sends your mail to a spam folder to protect your account, to fix this error you just need to change your password once.
top of page
bottom of page