
There are several reasons why your domain gets on the blacklists; the big percent comes from users who get annoyed of your emails because of reasons like, they didn"t get what they opted for, or they forgot that they have subscribed for your mailing, and thus report your emails as spam. It could also be that, they wanted to opt-out from your mailings but could not find an easy way other than reporting your emails as spam. When sufficient spam reports are generated form your domain, your domain would more likely be in the blacklists.
Once your domain gets in any blacklists, it would be impossible for you to send emails for clients whose mail administrator uses the blacklist where you are in. This means that your emails will never make it to your clients? inbox. This in return will undermine your business.
There are several ways which can be done in preserving a clean reputation, especially your reputation with your clients. The first thing, mean what you say, give your clients what they have asked for. If they ask for updates, give them updates, if it's price list, then send a price list. Another thing, adopt double opt-in. If somebody subscribed to your mailings, have him confirm his intention by asking him to do further actions. Double opt-in can be like sending a confirmation email to the subscribers, they then need to a follow a link or say reply to your emails to confirm their intentions.
