When I send an e-mail to my Yahoo account, how can I make sure I send it to my inbox and not to the spam or bulk folders?

When I open the email it shows a link to which when I open forwards me back to open another inbox. I have recieved about 10 emails this week from various people which I cannot open properly. I ahve contacted yahoo but no-one has got back to me. Please can someone help me as I am becoming more and more annoyed. This email I use is for my business, but I have another that is working fine from the same inbox.

Sometimes There Are Auto-Reply From Some Corp. But It Not In My Inbox Or Spam Please Help

The Question.

The “block sender” feature is turned on to block senders of e-mail coming to my inbox, but I want to block those senders whose mail Yahoo determines is spam and puts in my bulk box. I know it will eventually be deleted, but I am interested in blocking all spammers. Will moving items from the bulk box to the inbox cause any problems?

Thank you all in advance in taking your time.
Please read before you jump and reply to this question.
( I am a software engineer, my question is very specific, and yes, I did do a lot of thinking and searching myself before posting this question. I appreciate your time taken.)
I am looking for a email client or a software (like Mailwasher Pro) which can download emails from your service provider (for ex. gmail) and then allows the user to bounce few messages/mails – those are already been received to your inbox. I DO NOT want to set any filters. I just looking for a client/software that allows me to bounce mails at my will (not automated), Its not a hard bounce. I only just want the sender to think (or discourage) that the email account does not exist, with a standard reply gmail would give for any email send to a non-existing account.
Is any body familiar with such a software/client/application? I really do appreciate your help and time taken to address this question. Thank you again in advance.
more answers (:

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