B
Evidence Grade B
Graded
under review
Safe to Cite
Current
27%
27% -- hard bounce rate reduction for Rocksbox (2026)
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
27%
Unit
Percentage
Data Vintage
2026
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Kickbox
Primary
Tier C
https://alterable.com/blog/email-list-validation-protect-your-sender-reputation/ ↗
Source Article
Email List Validation: Protect Your Sender Reputation | Alterable
I’ve seen email programs fall apart not because of bad content or poor strategy, but because of list hygiene. A sender who’s been getting solid results starts seeing open rates drop, bounce rates creep up, and then one day their emails start landing in spam. By the time the problem is visible, the d…
Original Research
Kickbox
· Original study ↗
Methodology
Kickbox client case study result as reported by Alterable blog; relative decrease in hard bounce rate across all sends after implementing email list validation. Article is undated; publication-year vintage assumed.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Rocksbox: 27% hard bounce rate reduction. Source: Kickbox (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/rocksbox-hard-bounce-rate-decrease
HTML Embed
<blockquote cite="https://lighthousedata.io/data/rocksbox-hard-bounce-rate-decrease" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>27%</strong> -- hard bounce rate reduction for Rocksbox<br><small>Source: Kickbox (2026) · <a href="https://lighthousedata.io/data/rocksbox-hard-bounce-rate-decrease" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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