Everyone who opens a cold email asks two questions in the same second. Why are you writing to me, and why now. A proximity campaign answers both before they get asked, because it is built around a single fact that connects you to this recipient and is not true of anyone else on the list.
The cleanest version of that fact is location. You are in the same industrial park. Your office is a walk away. You drive the same road every morning. It sounds small, and that is exactly its strength, because nobody expects a sales email to open with it.
But location is only the special case. The principle is wider, and it is worth understanding before you build anything: this campaign works on any fact that cannot be copied to a different recipient.
Who this is for, and when to skip it
Run it when you have a real anchor. An office in the same city, a shared customer, a shared supplier, the same government program, the same industry event, the same regulator. The anchor has to be verifiable, and it has to be specific enough that the recipient recognises it instantly.
Skip it in three situations. When the anchor is invented or stretched thin ("we're both in tech"). When the audience is spread across an entire market with no geographic or sectoral cut. And when what you sell only matters to whoever happens to be looking for it this week. In that third case proximity will get the email opened and do nothing after that.
Quick test: if you can take the opening line and send it to half the list without changing a word, you do not have a proximity campaign. You have a sales email with decoration.
Building the list
The list here gets built backwards. You do not start from a persona and then narrow geographically. You start from the anchor and then look for the people inside it.
Step one, define the anchor's boundary. A street, an industrial park, a city, a cluster of towns. The tighter the boundary, the stronger the line. "Neighbours in the industrial park" beats "neighbours in the metro area."
Step two, pull the companies. For businesses with a physical presence, Google Maps is the right source, because a lot of them simply do not exist in LinkedIn-based databases. For B2B companies with a digital footprint, Apollo and Sales Navigator both filter on headquarters location. Pull from both and merge, because each one misses a different slice of the market.
Step three, verify the anchor by hand. This is the step most teams skip and the step that decides the campaign. A database address can be stale, can belong to a parent company abroad, can be a mailbox. Writing "we're neighbours" to a company that moved two years ago achieves the precise opposite of what you wanted.
Step four, contacts. Pull every title at the company instead of filtering by seniority up front. At a small business the owner is also the operations lead and also the person who picks suppliers. Filtering happens after the pull, based on company size and what you are offering.
Step five, cleaning. Client blocklist first, so you do not pay to enrich leads you are about to delete. Then resolve each recipient's mail provider from their MX records, which strips out anyone sitting behind a security gateway or with no mailbox at all, for free. Paid validation comes last, on whatever survives.
The angle
The anchor opens the email. That is its entire job. It is not the offer.
The structure that works:
- Subject: the anchor itself, one to three plain words, no punctuation.
- Line one: name the shared fact, phrased like someone who noticed, not someone who researched.
- Line two: what you do, framed through real customer names from their world.
- Line three: a soft ask.
Three things decide whether it lands. The subject line is the hook, not the body, so it should state the anchor rather than hint at it. The proof has to be names rather than descriptions, because "we've helped dozens of organisations" says nothing and three names they recognise say everything. And the ask asks for a yes, not for time.
The offer
In this campaign the offer leans on the proximity itself. You are close, so you can drop by. You are in the area, so a meeting costs nobody an hour of driving.
That removes friction in a way other campaigns struggle to reproduce. A meeting that requires travel is a big ask. A coffee five minutes away is barely an ask at all.
If your anchor is not physical, translate the same logic into your world: an offer the anchor makes easy. Same regulator, so you already have the document that matches their exact requirement. Same government program, so you are already an approved supplier and there is nothing to check.
The sequence
Step count is a per-campaign decision, not a rule of thumb. What is fixed is that the anchor does not repeat.
Step one leans on the anchor. After that it is spent, and every following step brings a different angle: a shift in the offer, a different kind of proof, a question aimed at whoever actually owns the topic. Recycle "we're neighbours" into step four and your strongest hook turns into an irritation.
The signature shrinks as the sequence goes on. Full at the start, first name only later.
Upload and send
Send from a warmed secondary domain. Never from the client's primary domain.
Split by the recipient's mail provider. Google and Microsoft are two different systems, and copy that works on one is too long for the other. Merge them into a single campaign and you guarantee you will not know which one failed.
Vary the body before sending so no two recipients get identical text. The variants have to be human, the kind you would send by hand. The subject line does not get spun. It gets separate clean versions instead.
Open tracking off. Plain text, no links in the first email.
Where it breaks
The anchor is wrong. Stale address, company moved, branch closed. The recipient spots it immediately and the email dies there.
The anchor is true but not distinctive. "We're both in the country" is not an anchor. If a quarter of the list could receive the same sentence, the hook is empty.
The list came out of a database with no verification. The most common failure and the easiest to prevent. Half an hour of manual checking on a sample saves the whole campaign.
The proof is generic. The anchor opened the email and line two closed it, because it sounded like every other agency.
The campaign runs on an anchor that ran out. An industrial park is a finite list. When it is done, it is done. You need a new anchor, not a second pass over the same people.
- Proximity is the special case of one principle: a real reason to write to them specifically.
- The anchor has to be verified by hand. A database is not enough.
- The subject line is the hook. It states the anchor rather than hinting at it.
- Proof comes in names, not descriptions.
- The anchor opens once. In later steps it stops working.
