Key takeaways
- Segment and role layers carry most of the relevance at the lowest cost.
- The individual layer is the most expensive and the easiest to fake.
- Merge fields only work when the data behind them is clean.
- Write for one specific reader in the segment, then check it fits the others.
What are the layers of email personalisation
Email personalisation works in three layers, each costing more to apply than the one before. Most of the relevance comes from the first two.
- Segment: industry, company size or stage, which decides the problem you lead with.
- Role: what the reader is measured on, which decides the example and the ask.
- Individual: a trigger specific to this person or company, which decides the opening line.
What data do you need to personalise at scale
You need accurate company, role and segment data, plus a place to store triggers. Merge fields only work when the data behind them is clean.
Before you build the campaign, check company names for odd capitals and legal suffixes, job titles for abbreviations, and contacts for duplicates. Keep triggers in a field of their own with the date you found them, so stale ones are easy to spot.
How do you write one email for many readers
Write for one specific reader in the segment, then check the email still fits the others. Writing for an average reader produces an email that fits nobody.
For a campaign to clinic managers at invented private dental groups, picture one manager with four sites who juggles rotas. If the email still makes sense to a manager with two sites, it works for the segment. If it needs rewriting for every reader, the segment is too broad.
How do you keep quality as volume grows
Keep quality by reading a sample from every batch before it goes out. Volume tempts teams to skip the read-through, which is when broken merge fields and stale triggers slip through.
Send from a mailbox you would be happy to receive replies in, at a pace it can carry, and track replies by layer so you know which layer earns its cost.
How to personalise an email campaign at scale
Build the layers in order, broadest first.
- Split the list into segments that share a problem, and write one message per segment.
- Adjust the example and the ask for each main role in the segment.
- Clean the merge fields: company names, job titles and first names.
- Add an individual opening line for top-tier accounts with a real, recent trigger.
- Review a sample from each segment, then send from your own mailbox and track replies by layer.
Where Pebbles Ai fits
- CapabilityOutreach contentBuild email campaigns of up to seven touches with a personality for each piece, saved as drafts in your connected mailbox. A template send delivers a template to a CRM segment and always asks for your approval first.
- FoundationCompany IntelCompany Intel gives the assistants your Business knowledge and Brand voice, so every segment message starts from the same facts and tone.
Common questions
What is the difference between personalisation and customisation in email?
People use the words loosely. A useful split is that customisation adapts a message to a group, and personalisation adapts it to one person or company.
Do merge fields count as personalisation?
Only barely. A first name shows the email was addressed, not that it was written for the reader; relevance comes from the problem and the example.
How many segments should one campaign have?
As many as you can write genuinely different messages for. If two segments would get the same email, merge them.
About this page. Written by the Pebbles Ai team for people who run sales, marketing and growth. Last updated .
