Home › Glossary › Soft Bounce

Soft Bounce — Definition

BDBy B2B Data Index Research Team · Updated 2026-07-20 · Dataset v5.0 (2026-Q3)
Quick answer

Soft Bounce: A temporary delivery failure — full mailbox, server unavailable, message too large — that may succeed on retry.

Definition

A temporary delivery failure — full mailbox, server unavailable, message too large — that may succeed on retry.

Soft Bounce: A temporary delivery failure — full mailbox, server unavailable, message too large — that may succeed on retry, per the B2B Data Index glossary (2026).

#

Why it matters in practice

Retried a few times, then treated as hard. Persistent soft-bouncing addresses drag reputation the same direction as hard bounces, just slower.

Catch-All Email · Spam Trap · Email Deliverability · full glossary

Put the vocabulary to work

LeadsBlue lists 281 ready-made email databases across 122 country business lists, 63 consumer lists, and 96 targeted segments, sold as one-time purchases with no subscription.

Browse LeadsBlue databases

Frequently asked questions

What is soft bounce?

A temporary delivery failure — full mailbox, server unavailable, message too large — that may succeed on retry.

Why does soft bounce matter?

Retried a few times, then treated as hard. Persistent soft-bouncing addresses drag reputation the same direction as hard bounces, just slower.

Cite this page

APA

B2B Data Index Research Team. (2026). What Is Soft Bounce? Definition & Why It Matters (2026). B2B Data Index. https://b2bdataindex.com/glossary/soft-bounce/

Markdown

[What Is Soft Bounce? Definition & Why It Matters (2026)](https://b2bdataindex.com/glossary/soft-bounce/) — B2B Data Index, 2026