Email preview and test email errors when SendCloud plugins are active

  • Resolved nikist

    (@nikist)


    6 months, 2 weeks ago

    Hi WooCommerce support,

    I’m experiencing issues with the built-in WooCommerce email system whenever one of the Sendcloud plugins is active. Sendcloud advised me to contact WooCommerce directly, as they suspect the issue is related to WooCommerce email rendering.Website setup

    • WordPress + WooCommerce webshop
    • SendCloud Shipping (old integration, V1)
    • SendCloud | Smart Shipping Service (new integration, V2)
    • WooCommerce default email templates (no custom overrides)

    Description of the issue

    When either Sendcloud V1 or Sendcloud V2 is activated, several WooCommerce emails show errors in the WooCommerce Email settings screen.1. Email previews fail

    For many WooCommerce emails (e.g. Processing Order, Completed Order, Customer Invoice, etc.) the preview returns this error:

    “There was an error rendering the email preview. This doesn’t affect actual email delivery. Please contact the extension author for assistance.”

    When the Sendcloud plugins are disabled, previews work normally.2. Test emails cannot be sent

    For those same emails, clicking ‘Send test email’ does nothing — no email is sent and no error message appears.

    Only the following emails still work correctly even when Sendcloud is active:

    • Reset Password
    • New Account
    • PW Gift Card Email (from plugin)

    All other WooCommerce emails fail to preview or send test mails.Additional information

    • I tested this by disabling all plugins and re-enabling them one by one.
      → The issue occurs only when Sendcloud Shipping or Sendcloud Smart Shipping Service is active.
    • Sendcloud confirmed that their tracking emails do not disable WooCommerce emails, and that their plugin should not interfere with WooCommerce email generation.
    • Because of this issue, I’m unsure whether customers are actually receiving WooCommerce emails.

    What I need help with

    Can you help me to fix these items:

    1. Sendcloud plugins are causing WooCommerce email preview generation to fail
    2. Test emails cannot be sent while Sendcloud is active
    3. Can you confirm whether this issue could affect live customer emails?
    4. How can we fix or debug the email template rendering process so previews and test emails work again?

    Any guidance or troubleshooting steps would be greatly appreciated.

    Thank you!
    Nikita

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Viewing 2 replies - 1 through 2 (of 2 total)
  • Moses M. (woo-hc)

    (@mosesmedh)

    6 months, 2 weeks ago

    Hi @nikist,

    Thank you for reaching out and for taking the time to explain your situation in detail. I completely understand how frustrating and worrying this can be, especially since it affects transactional emails that your customers rely on.

    To restate the issue: the WooCommerce email preview and test email features stop working when your site is connected to Sendcloud using any of their plugins. If that’s correct, then it’s very likely a conflict between WooCommerce and the Sendcloud integration. Unfortunately, this isn’t something we can troubleshoot from our side, as third-party developers are responsible for ensuring their plugins remain compatible with WooCommerce core and WordPress.

    If the preview and test emails weren’t working at all, we could certainly investigate further. But since the problem only appears when the Sendcloud plugin is active, it strongly indicates the issue lies within their plugin.

    Can you confirm whether this issue could affect live customer emails?How can we fix or debug the email template rendering process so previews and test emails work again?

    For testing, it’s best to switch your payment method to test or sandbox mode. Then try placing a test order yourself, or manually create an order in the admin area using your own email address as the customer. After that, check whether you receive the appropriate transactional emails in both your customer inbox and your admin inbox.

    Plugin Support thelmachido a11n

    (@thelmachido)

    6 months ago

    It’s been a while since we heard back from you for this reason we are closing this thread. 

    If WooCommerce has been useful for your store and you appreciate the support you’ve received, we’d truly appreciate it if you could leave us a quick review here: 

    https://ww.wp.xz.cn/support/plugin/woocommerce/reviews/#new

Viewing 2 replies - 1 through 2 (of 2 total)

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