/campaigns/:id/content

put https://api.mailerlite.com/api/v2/campaigns/{id}/content

Upload your HTML template to created campaign [Rate limited]

You can use your custom HTML template and associate it with created campaign using this endpoint.

HTML template

HTML template must contain head and body tags, a link for unsubscribing is also required.

Example of HTML template with unsubscribe link:

<html>
    <head>
        <title>Email template</title>
    </head>
    <body>
        <h1>Title</h1>
        <p>Content</p>
        <p>
            <small>
                <a href="{$unsubscribe}">Unsubscribe</a>
            </small>
        </p>
    </body>
</html>

Plain text mail

Some email clients do not support HTML emails so you need to set plain text email and it must contain these variables:

{$unsubscribe} - unsubscribe link
{$url} - URL to your HTML newsletter

Responses

Language

Credentials

Header

Request


xxxxxxxxxx
1
curl -X PUT "https://api.mailerlite.com/api/v2/campaigns/3043022/content" \
2
-d '{
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    "html": "<html><head><title>Email template</title></head><body><h1>Title</h1><p>Content</p><p><small><a href=\"{$unsubscribe}\">Unsubscribe</a></small></p></body></html>",
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    "plain": "Your email client does not support HTML emails. Open newsletter here: {$url}. If you do not want to receive emails from us, click here: {$unsubscribe}"
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}' \
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-H "Content-Type: application/json" \
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-H "X-MailerLite-ApiKey: fc7b8c5b32067bcd47cafb5f475d2fe9"

Click Try It! to start a request and see the response here! Or choose an example:

application/json

HTML template

Plain text mail

200200

422422