Well, then it's an awareness issue at your side.FUD. I'm unaware of any properly-run opt-in mailing lists that have been mislabeled as spam and "wrongly blocked".
Many service providers block lists based on receipt patterns without considering whether the subscriptions were validly requested by the recipients.
While it is possible to get "whitelisted" by them once you explain and demonstrate your white-hattedness, they don't make it possible to do this in advance, nor in most cases do they even acknowledge that it's possible without weeks of wrangling.
In other cases, complaints of spam came *because* of confirmation messages -- we've been listed at Spamcop because of users getting subscribe-slammed and reporting our confirmation messages as spam.
Of course, individual users may forget that they've signed up forThat doesn't fix it -- that gives you the ammo to enter into a manual process to fix it, one by one, each time it's reported.
something and report it as spam: but that's easily fixed simply by hanging
onto all subscribe/unsubscribe logs permanently.
