Segments

Documentation Index

Fetch the complete documentation index at: https://docs.letterbucket.com/llms.txt

Use this file to discover all available pages before exploring further.

Segments let you divide your audience into groups based on specific conditions, so you can send the right content to the right people. You can access segments from Audience → Segments.

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Dynamic vs. Static segments

When creating a segment, you choose between two types:

• Dynamic: Membership updates automatically every night based on conditions. As subscribers meet or stop meeting the criteria, they’re added or removed.
• Static: Membership is frozen at the moment of creation. Subscribers won’t be added or removed automatically even if their behavior changes.

Use dynamic segments for ongoing targeting (e.g. “engaged readers”) and static segments for one-time sends to a fixed group.

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Creating a segment

1. Go to Audience → Segments.
2. Click New Segment.
3. Enter a name and optionally a description.
4. Choose Dynamic or Static.
5. Add one or more filter conditions.
6. Save the segment.

LetterBucket will process the segment in the background. Once ready, you’ll see the subscriber count and metrics.

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Filter conditions

Each condition is made up of a field, an operator, and a value. Multiple conditions are combined with AND logic — a subscriber must match all of them to be included. Available fields: Available operators:

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Segment metrics

Each segment shows:

• Total subscribers in the segment
• Open rate of that group
• Click rate of that group
• Unsubscribe rate of that group

These metrics help you understand the quality of each group before targeting them.

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Using a segment

When sending or scheduling an email, open the Audience dropdown in the Delivery Settings step and select the segment. The summary box will show you how many subscribers will receive it.

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Exporting a segment

You can export the subscriber list of any segment as a CSV file. The export includes email address, name, and subscription status.