Customising opt-in confirmation email

The opt-in confirmation and welcome email are sent by Mailchimp and not by our plugin. You can edit these emails in your Mailchimp dashboard by going to Lists > *one of your lists* > Signup Forms > General forms.

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You can then select the email you wish to edit from the select box.

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Should you run into any trouble related to editing the confirmation email, the friendly folks over at Mailchimp support will be able to help you a lot better than we possibly can as this is unrelated to the plugin.