B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
4,000
4,000 -- bulk mail minimum volume standard letter for Royal Mail bulk mail discounts (2025)
Qualifying for bulk mail discounts requires sending at least 4,000 standard letter tariff items.
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
4,000
Unit
Count
Data Vintage
2025
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
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
The Mailing People
Primary
Tier B
https://themailingpeople.co.uk/tips-and-advice/postage/bulk-mail-postage-guide/ ↗
Source Article
What you need to know about bulk mail postage
Postage can easily eat up a large part of the budget for any direct mail campaign, so it’s worth exploring every available opportunity to keep these costs down.
One option to consider if you’re looking to engage with a large audience as efficiently as possible is bulk mail postage.
What is bulk mail…
Original Research
The Mailing People
· Original study ↗
Methodology
Publisher guidance on Royal Mail bulk mail qualification thresholds
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Royal Mail bulk mail discounts: 4,000 bulk mail minimum volume standard letter. Source: The Mailing People (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/bulk-mail-minimum-standard-letter-items
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<blockquote cite="https://lighthousedata.io/data/bulk-mail-minimum-standard-letter-items" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>4,000</strong> -- bulk mail minimum volume standard letter for Royal Mail bulk mail discounts<br><small>Source: The Mailing People (2025) · <a href="https://lighthousedata.io/data/bulk-mail-minimum-standard-letter-items" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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