Previously, if an email address containing an apostrophe bounced, then the email address would be added to your account's Bounce list but with the apostrophe stripped out! Then, the next time you sent an email campaign, the "bad" email address that had previously bounced would still end up on the recipient list since it wouldn't be filtered out during the Bounce list crosscheck.
This has been fixed so that the full email address, including any apostrophes, will be preserved when added to an account's Bounce list, and therefore future email campaigns will not attempt to send to this address.
