> ## Documentation Index
> Fetch the complete documentation index at: https://developers.redo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# CampaignFollowUpInput

> Follow-up email settings. Email campaigns only.

<ResponseField name="delayMs" type="Float">
  Delay after the original send, in milliseconds. At least one day when enabled.
</ResponseField>

<ResponseField name="enabled" type="Boolean!" required>
  Whether a follow-up email should send after this campaign.
</ResponseField>

<ResponseField name="engagementPeriod" type={<a href="/docs/api-reference/v3/reference/marketing/campaign-follow-up-engagement-period">CampaignFollowUpEngagementPeriod</a>}>
  How long after the original send to look for engagement. Required when enabled.
</ResponseField>

<ResponseField name="subjectLine" type="String">
  Subject line for the follow-up. Required when enabled.
</ResponseField>


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