No, all blacklisted email addresses cannot be removed at the same time. Email addresses are blacklisted due to invalid accounts, full mailboxes, and closed accounts. Resending all emails at the same time could cause our servers and the email to appear as SPAM.

To prevent your email from being blacklisted, Blackbaud NetCommunity does not send email to an invalid account. For each email address in Invalid Accounts, you can view the bounce error that caused the ISP to report the account as invalid. If you feel an account is incorrectly marked invalid, you can mark it as active to include it in a future mailing (BB551816).

Additional information about blacklisting (BB346004).