# Magnum Electrical Ltd

Source: https://www.nevdev.io/work/magnum-electrical/
Last updated: 2026-09-26

A solar and electrical installer in Surrey, England, and a cold email programme built to find it new work.

Cold outbound · lead generation

Lead generation, Cold email, Deliverability, Reply tracking

Updated 26 September 2026

https://www.magnumelectrical.co.uk

## Results

Six campaigns from May to 26 September 2026.

- 6,940: cold emails sent
- 94.5%: delivered without bouncing
- 258: replies, 3.9% of delivered emails
- 11: interested prospects
- 10% → 3%: bounce rate, June campaigns to July

Figures from the campaign dashboard on 26 September 2026. The campaigns are still running.

## The problem

An installer's pipeline depends on referrals and enquiries that arrive unevenly. Cold email can keep it full, but only when the lists are clean, the sending setup protects deliverability, and the replies are picked up.

## What we built

Six cold email campaigns since May 2026, each an opening email with follow-ups, with every reply and interested prospect tracked in one place.

### Deliverability first

94.5% of all emails were delivered without bouncing. The bounce rate fell from 10.4% in the June campaigns to 2.7% in July, which protects the sending domains every later campaign depends on.

### Sequences written for replies

Each campaign pairs an opening email with follow-ups, written to start a conversation rather than earn a click.

### Replies and interest

258 replies across six campaigns, 3.9% of the emails that were delivered, and 11 prospects marked as interested.

- 6,940 cold emails across six campaigns
- 94.5% delivered
- 258 replies and 11 interested prospects

Running. Figures from the campaign dashboard on 26 September 2026.

## What it proves

Any business that sells a high-value job and can describe who buys it. The list and the sending setup do most of the work; the copy comes last.

## What this drew on

- [Lead generation](https://www.nevdev.io/services/outbound/): Cold email that books meetings, with every reply landing in a CRM you own.