Generally, landing pages affect SEO positively, u003cstrongu003eif u003c/strongu003ethey are optimized properly and targeted to the right audience. u003cbr/u003eu003cbr/u003eHowever, not all landing pages should be indexed by search engines. u003cbr/u003eu003cbr/u003eLanding pages often have a short lifespan for being useful, and once useless, they may derail your search engine marketing and lead generation efforts instead of improving them.u003cbr/u003eu003cbr/u003eLanding pages that can expire and become counterproductive when indexed include:u003cbr/u003eu003cbr/u003e- u003cstrongu003ePay-per-click landing pagesu003c/strongu003e: They are only useful for very specific search intent and not helpful for more generic terms.u003cbr/u003eu003cbr/u003e- u003cstrongu003eSales pages: u003c/strongu003eUnless they’re a deals page that is kept up-to-date, promotional pages expire and become useless for searchers.u003cbr/u003eu003cbr/u003e- u003cstrongu003eLanding pages for email campaignsu003c/strongu003e: Email campaigns are time-sensitive so related landing pages always have a short lifespan.