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Last week I received a mail from a recruiter on LinkedIn with "an opportunity". In the end of her mail, she asked me to give me a call if I'm free and interested.
Since I wasn't searching for a job (and the job description didn't really fit my CV), I ignored the mail as I wasn't interested.
Today I received a new mail of her asking if I had seen her previous mail and telling me the job was still available. I replied by thanking her for the mail and telling her I wasn't searching for anything right now. Did I do wrong by ignoring the mail or should I answer all mails ending on 'reply if you're...' even if they don't apply to me?
A side question: what if a manager from my company or a customer sends his/her mail that way?