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PATCH
/
api
/
v1
/
ab-tests
/
{abTestId}
/
variants
/
{variantId}
Update A/B Test Variant
curl --request PATCH \
  --url https://api.sequenzy.com/api/v1/ab-tests/{abTestId}/variants/{variantId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "subject": "<string>",
  "previewText": "<string>",
  "html": "<string>",
  "blocks": [
    {}
  ]
}
'
{
  "success": true,
  "variant": {
    "id": "var_b",
    "label": "B",
    "emailId": "email_def456",
    "subject": "A better subject",
    "previewText": null,
    "blocks": [],
    "localizations": []
  }
}
Update a draft A/B test variant’s subject, preview text, or body content. You can use raw HTML or Sequenzy block JSON for the body.

​
Request

​
abTestId
string
required
A/B test ID.
​
variantId
string
required
Variant ID.
​
subject
string
Updated subject line.
​
previewText
string
Updated preview text. Send null to clear it.
​
html
string
Replacement HTML body. Use this or blocks, not both.
​
blocks
array
Replacement Sequenzy email blocks. Use this or html, not both. Put block styling under styles; top-level style keys like backgroundColor, backgroundOpacity, borderColor, borderWidth, and borderRadius are normalized into styles.
curl -X PATCH "https://api.sequenzy.com/api/v1/ab-tests/ab_abc123/variants/var_b" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"subject": "A better subject"}'

​
Responses

{
  "success": true,
  "variant": {
    "id": "var_b",
    "label": "B",
    "emailId": "email_def456",
    "subject": "A better subject",
    "previewText": null,
    "blocks": [],
    "localizations": []
  }
}