B2C leads older than 90 days will fail in 2026 due to accelerated decay rates (projected 4-5% monthly), stricter spam filtering algorithms, and automated consent revocation under new privacy laws. Old lists contain unknown user errors, abandoned accounts, and recycled spam traps that trigger immediate blacklisting. Even “verified” lists from six months ago lose 18-25% accuracy. Sendin... https://www.b2clead.org/b2c-leads-database/