Lists and Segments

Before you send a campaign, decide who should receive it. Lists and segments are the two main ways to group contacts in Migma.

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Lists

A list is a fixed group you manage. Use lists for contacts from a signup source, plan, event, or manual import. To create a list:

1. Go to Audience in the left sidebar
2. Click Lists
3. Click Create List
4. Name the list and add contacts

When you send a campaign, you can target a list directly.

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Segments

A segment is a smart group that updates automatically based on rules you set. Instead of manually tagging people, you define a filter and Migma keeps the segment up to date as contacts change. For example: everyone who signed up in the last 30 days, or everyone in your VIP list who has not opened an email in 60 days. To create a segment:

1. Go to Audience in the left sidebar
2. Click the Segments tab
3. Hit Create Segment
4. Give it a name
5. Set your filters or leave it open to include everyone
6. Click Create Segment

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Describe a segment in plain words

You do not have to build filters by hand. The search box at the top of the Create Segment dialog also drafts segments from plain language. Type what you want and Migma turns it into filters, shows the matching contact count, and leaves the draft for you to review before you save. It understands the same things you can build manually:

• By attribute — “pro plan contacts in France”, “everyone whose language is Spanish”
• By engagement — “opened in the last thirty days”, “subscribed but never clicked”
• By example — “contacts like alex@acme.com” or “subscribers similar to my best customer”
• By value group — “investors” when their emails end in “.vc”, “everyone on a gmail address”

With by example, Migma looks up the contact you name and builds the segment from their distinctive attributes, the traits that are rare across your audience, while skipping near-universal values that would just select everyone. It never filters on identity fields like email or name, so you get a lookalike group, not a copy of one person. With by value group, Migma looks at the real values in a field to spot a pattern, then writes one rule for it instead of listing every value. Ask for “investors” and it can notice that many emails end in “.vc” and build the segment as “email ends with .vc”. Because it is a rule, the segment stays accurate as new matching contacts arrive. When you build filters by hand, the same power is in the field condition’s operator: pick is or is not for exact values, or starts with, ends with, contains, and does not contain to match by pattern. This drafting lives in the dashboard. Through the API you build the same result by setting the segment’s filters object directly, described in the filter types below.

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Segment filter types

A segment can combine any of these filters. They behave the same whether you build the segment in the dashboard or through the API, where they live on the segment’s filters object. Stack as many filters as you need. A contact has to satisfy all of them to land in the segment, so each filter you add narrows the group.

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Lists vs segments

Not sure which one to use? Here is a simple way to think about it. In practice, most teams use both. Lists are fixed groups. Segments update as contact data and engagement change.

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