Hi,
Unfortunately there is not any way to blacklist a user. However, maybe you can just create a specific list for the blacklisted users, and keep the users subscribed to this list?
I would be very interested in exploring whether you might add a blacklist feature. Though I realize that someone stubborn enough to try repeatedly to subscribe might use multiple e mail addresses, which would tend to defeat the blacklist feature.
At the moment, we do not have any current plans to add a blacklist feature. However, we’ll definitely consider it for the future.
a black listing would be handy for blocking subscribers using trash mailer services and therefore very welcome… seems to be no rocket science, pls realize for upcoming version 3.0.
A blacklist would be very cool!