How It Works
Four simple steps from postcode to response.
Why lumpy mail outperforms flat letters
A plain letter typically responds under 1% (JICMAIL cold-DM average, 2025). Warm direct mail already averages a 7.2% response rate and £9 back for every £1 spent (JICMAIL Response Rate Tracker, 2025) — and behavioural research shows a small gift inside a mailing lifts response by a further 17-75% (Falk, Econometrica, 2007). The "lump" in the envelope triggers curiosity — people HAVE to open it. Combined with our 37-source data targeting, you're reaching the right people with something they'll actually hold onto.
7.2%
Average response rate for warm direct mail (JICMAIL, 2025)
37
Government data sources for precision targeting
£2,995
All-in cost for a 1,000-pen campaign
Simple, transparent pricing
Letter + pen + envelope + postage + QR tracking. All included.
Entry tier · minimum campaign
1,000 pens
All-in. Mono or full colour.
£2,995
mono · per campaignor £3,795 for full colour
- 1,000 personalised letters
- 1,000 branded pens
- C5 envelopes & 2nd class postage
- Per-pen QR tracking + dashboard
- 37-source data targeting included
All prices include 2nd class postage. Five fixed tiers from 1,000 to 5,000 pens. Above 5,000: custom quote. VAT applies to business customers.
Tell us your postcode. We'll show you the opportunity.
Free area report. No obligation. See what 37 data sources reveal about your target area.
Get Your Free Area ReportFrequently Asked Questions
Lumpy mail is any direct mail piece with a physical object inside — in our case, a branded pen. The "lump" in the envelope triggers curiosity and almost guarantees the letter gets opened, rather than going straight in the bin. Warm direct mail averages a 7.2% response rate and £9 back for every £1 spent (JICMAIL Response Rate Tracker, 2025), versus around 0.9% for plain cold direct mail (JICMAIL, 2025).
We use 37 government and public data sources including Companies House (5.15 million businesses), ONS Census data, IMD deprivation indices, planning applications, food hygiene ratings, and more. This lets us target by area, business type, household wealth, property type, and dozens of other factors. No other UK direct mail company offers this level of targeting intelligence.
Everything. A personalised letter printed on premium paper, a branded pen (your logo or ours), a C5 windowed envelope, Royal Mail postage, and QR code tracking on every piece. There are no hidden extras.
Our campaigns start at 1,000 pens. That's the smallest run where the maths works for you: it's the volume at which our 37-source targeting pays for itself, and where a Royal Mail Advertising-Mail campaign reaches enough of the right businesses to move the needle. Below 1,000 the per-pen cost climbs and the targeting can't do its job. From £2,995 all-in for 1,000 pens, delivered.
We typically dispatch within 3-5 working days of receiving your order. Royal Mail 2nd class then delivers within 2-3 working days. Need it faster? We offer 1st Class and Tracked options too.
Yes. Request a free sample pack and we'll send you an actual lumpy mail letter with pen, so you can see exactly what your customers will receive. Contact us at hello@lumpymailpens.co.uk.
Yes. We use publicly available data from government sources. We don't buy or sell personal data. Direct mail to business addresses using Companies House data is fully compliant with UK GDPR and the Privacy and Electronic Communications Regulations (PECR). We're registered with the ICO.
Any business that serves a local area. Our most popular sectors are estate agents, accountants, solicitors, dental practices, restaurants, builders, IT support companies, cleaning companies, gyms, and charities. We have industry-specific templates for each.
Industries We Serve
Lumpy mail works for any business that wants to stand out. Here are some of the sectors we specialise in.