I work on the telephones at work and when I cannot get an answer from a customer I send them an e-mail asking them to contact me back at the office (missed call message). However I sent it to multiple recipients as I was in a hurry and did not click the bcc option to hide the customers mail addresses from each other by accident. They then marked the e-mails as spam and now my office thunderbird sends e-mails out but my customers call me saying they have not received any of the e-mails they have requested from our office. I would like to know if there is any way I can rectify this matter as it was just simply a mistake and because of this my business is suffering.