About this app
Zvanta Blocklist is a hard customer blocklist that works inside checkout. Add an email, phone or delivery address and the order simply cannot be placed — including express checkouts, where banner apps never load. Smart matching catches Gmail aliases, phone prefixes and spelling tricks. Orders that slip through other channels are tagged instantly and can be auto-cancelled with a full refund. Buyers only ever see a neutral message. Your list is encrypted at rest; GDPR erasure is automatic.