Soft Bounce
A temporary email delivery failure such as a full mailbox or a transient server issue. Soft bounces may succeed on retry.
Why it matters for email security
Understanding soft bounce helps you build signup flows that resist fake accounts, disposable inboxes and automated abuse. VeriShield Edge operationalizes this signal as part of its transparent 0-100 fraud score.
Related concepts
Explore the full glossary or the domain directory to see these signals applied to real domains.