Email marketing format: how it works and how to set it up

Email marketing format is the fixed order of parts every marketing email follows, from the sender name in the inbox to the legal line in the footer. Get the format right and your emails are recognised, opened, read and acted on; get one part wrong and the rest of the email may never be seen. This article answers what each of the nine parts is, what it must contain, which parts are legally required in the UK, the US and similar markets, and how to set the format once on the levelpartner.ai platform so every send follows it.

The nine parts, in order

Parts the reader sees before opening

1. Sender name. A person's name, or a person plus your firm, such as "Tom at Harbour Advisory". Readers decide whether to open largely on who sent it.
2. From address. An address on your own verified domain, never a free webmail address.
3. Subject line. What is inside, in plain words, ideally under 50 characters.
4. Preview text. The line shown after the subject in most inboxes. If you leave it empty, the inbox fills it with whatever text comes first, often "View in browser".

Parts the reader sees after opening

1. Header. Your logo and nothing else, kept short so the message starts high on a phone screen.
2. Body. The message itself, in short paragraphs, with one idea per paragraph.
3. Call to action. One button or link that says exactly what happens next.
4. Signature. The sender's name and role, matching the sender name in the inbox.
5. Footer. Your firm's name and postal address, an unsubscribe link, and a line explaining why the reader is receiving the email.

Which parts are required

In the UK, the US, Canada, Australia and most other markets, marketing emails need a working unsubscribe option and must not disguise who the sender is. US rules also require a valid postal address. UK rules on electronic marketing require consent for most emails to individuals and a simple way to opt out in every message. Treat the footer as compulsory on every marketing send and check your position with an adviser if you are unsure.

HTML or plain text?

Most marketing emails are sent as HTML, which allows layout, colour and buttons. The platform also generates a plain-text version that some email apps display. Personal-style emails, such as follow-ups from a named adviser, often work better in a plain format with no header image, because they read like normal correspondence.

Before you start

You need a verified sending domain in Settings, your postal address as it should appear, the wording for your "why you are receiving this" line, and an agreed rule for sender names. Decide whether marketing emails come from a person, a team or the firm, and apply it consistently.

How to set it up

1. Go to Settings, open Email Services and confirm your domain.
2. In Marketing, Emails, Templates, start a new template.
3. Add a short header row with your logo only.
4. Add a Text element for the body and one Button.
5. Add a signature Text element with the sender's name and role.
6. Check the footer: firm name, address, unsubscribe link and reason.
7. Click Save Template to keep it as your format master.
8. For each send, open Campaigns, click New and pick the master.
9. Click Preview and Test Email, then check all nine parts on a phone.
10. Click Send or Schedule and add the Subject Line.

What it is for in a 10 to 250 person firm

A fixed format is a quality floor. When revenue is stalled and email is one of the few cheap levers left, you cannot afford sends that look different every time, miss the preview text or forget the unsubscribe link.

It replaces individual habits, where each person who sends email does it their own way. Once the master exists, the format costs nothing to maintain beyond a quarterly check. Agencies, consultants, mortgage brokers and real estate firms all need the same nine parts.

For the visual side, read our guide to email marketing design on the platform. To see the format in a complete email, look at our marketing email sample. Newsletters use the same nine parts with a longer body; our template for an email newsletter shows how.

When the format can bend

Plain, personal emails can drop the header and the button, using a text link instead. The footer, sender identity and unsubscribe option do not bend. If an email is marketing, those three are always present.

Troubleshooting

The preview text shows odd words. The field was left blank. Fill it in every time.

Emails show the wrong sender name. A workflow overrides the default. Check the sender settings inside each send email action.

Unsubscribe links do not work in tests. Test sends may disable them. Check on a live send to an internal contact.

The footer address is out of date. Update it in your template and in the business profile in Settings, then resend tests.

Frequently asked questions

What is the correct format for a marketing email?

Sender name, from address, subject, preview text, header, body, call to action, signature and footer, in that order. The first four decide whether the email is opened; the last decides whether it is compliant.

Does every marketing email need an unsubscribe link?

Yes. UK and US rules, and those in most other markets, expect an easy way to opt out in every marketing message. The platform adds an unsubscribe link to marketing emails; keep it visible.

How long should the subject line be?

Short enough to read in full on a phone, which usually means under 50 characters. Put the most important words first in case the end is cut off.

Should I write the preview text myself?

Always. It is the second line of your subject. Use it to add a detail the subject leaves out, such as a date, an audience or a reason to open. Check how it looks using an email marketing mockup before sending.