We're running a content-gated lead generation model where visitors download a resource in exchange for their email address, which then feeds into our nurture sequences.
Over the last few months, we've noticed more signups coming from disposable email services. These temporary addresses work long enough to download the content but expire before the first nurture email goes out.

So we're getting the conversion numbers, but very little actual pipeline value from these contacts.
Would you block disposable email addresses directly at the form level, or accept them as part of the cost of offering gated content? Curious how others are handling this without hurting legitimate conversions.