How to use multi-step AI pipelines with Bulk Email Reply

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Bulk Email Reply dashboard is here.

  1. Introduction
  2. What are multi-step AI pipelines?
  3. AI pipeline syntax for Bulk Email Reply by cloudHQ
  4. Example multi-step AI pipelines for Bulk Email Reply

Introduction

Using multi-step AI pipelines to answer many emails is important because one AI call often isn’t enough for accurate, safe, personalized, and context-aware replies—especially with large volumes or complex messages. A pipeline breaks the job into smaller, reliable steps.

This support note explains how to create and use multi-step AI pipelines, with real-world examples.

What are multi-step AI pipelines?

Multi-step AI pipelines are workflows where several AI steps (prompts) are chained, and the output of one step becomes the input to the next. This helps solve tasks that are too complex for a single model call.

Think of it as an assembly line for intelligence instead of one giant “do everything” call.

Basic flow:

  1. Understand the email:
    The AI reads the message to figure out what the sender wants—basically the email type.
  2. Generate the right response:
    Based on that type, the AI then pulls in needed info and creates a clear reply that matches your tone and answers every part of the email.

AI pipeline syntax for Bulk Email Reply by cloudHQ

To run the AI flow, the output of an AI step should use this structure:

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prompt:start

typeofemail
write exactly this: This is email about sales
prompt:end

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If our system detects “prompt:start” and “prompt:end” in the output, we pass the text between these two lines to the AI to generate the answer.

Example multi-step AI pipelines for Bulk Email Reply

Here is a full prompt example with AI pipelines:
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Process the given email and classify it. The input is an email message.
The answer must start with prompt:start and end with prompt:end. Then, based on the classification, do the following:

If the email does not have enough information to understand what it is about or what the problem is, then write exactly this and do not write anything else:
prompt:start
Answer the email and ask what this is about. Ask for more details. Be polite. Write it as markdown.
Do not quote the answer in ```.
prompt:end

If the email is a marketing email trying to sell something, then write exactly this and do not write anything else:
prompt:start
Answer the email and ask the sender to unsubscribe you from the mailing list.
Do not quote the answer in ```.
prompt:end


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