The Pre-send Check (Preflight) scans your email for two types of findings:

• Blocking issues – problems that completely prevent sending, like a missing button link, a missing image, or a product block without SKUs.
• Warnings – things worth a look that won't stop you from sending, like placeholders without a fallback value or empty columns.

As long as there are blocking issues, the Send test email and Schedule buttons are disabled. You'll see an explanation why.

1. Open your mail in the email editor.
2. Click the Check button (top right).
3. Xendy scans the mail and shows the results: blocking issues and any warnings. The contrast check also evaluates the four fixed texts (header line, footer line, unsubscribe link, and sender line) against the background color.
4. Made changes afterwards? The button will change to Check again. Click it to start a new scan.

The Check marks every individual block that causes an issue, not just the first one.

At blocking issues, you see in the Check which blocks are causing the problem. You have two ways to navigate to them:

• Click directly on the highlighted block in the results.
• Use the Go to the first issue button in the locked email client view; this jumps directly to the first problematic block.

The view per email client (Apple Mail, Gmail, Outlook, Yahoo) shows a lock icon with the text "Resolve blocking issues first" as long as there are blocking issues.

Please note: a placeholder image in your email is a blocking issue. In that case, you cannot only not send or schedule, but also not send a test email. Do you have automations? Then a placeholder image also blocks activating an automation, adding a step, and saving a step. The dashboard shows this in a window as soon as this occurs.

After resolving all blocking issues, click Check again. If there are no more blocking issues, the Send test email and Schedule buttons become active again.

When you want to send a test email from the builder, Xendy automatically runs the Check in the test email modal and shows the results right there. If the email is blocked, you won't be able to send the test email from the modal. Fix the blocking issues first, then click Check again before sending the test email.

Three new warnings have been added in this release:

• ":n block(s) with Lorem ipsum or 'Button text'" – blocks that still have the default button text or Lorem ipsum that you haven't updated yet.
• ":n block(s) with placeholder content" – blocks whose sample content hasn't been replaced yet.
• ":n selected product(s) no longer in your store" – products you've selected that are no longer available in your store (partially missing SKUs).

These warnings won't block sending, but it's a good idea to check them before you send the email.