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What to do if an email bounces with a spam warning

When an email bounces, it goes red on your Dashboard. Click on the red item to see a popup explaining what happened.

If the email bounced because it was spam-filtered, follow these steps to improve deliverability.

1. Add a personal message​

Adding detailed, personalised text makes the email more authentic and more likely to pass spam filters. See What to do if an email fails to reach a recipient for an example message and a guide on creating preset email messages.

You can use email placeholders to personalise the message with recipient and sender details.

2. Strip HTML from emails​

If a personal message alone doesn't work, try removing images from emails to that domain:

  1. Go to Admin > Email delivery
  2. Add the recipient's email domain (e.g. if the email is joe@example.com, enter example.com)
  3. Select Stripped HTML from the dropdown
  4. Click Add domain

This removes images from emails to that domain, including your logo and read-receipt tracking.

tip

After adding the domain, send a reminder to deliver a new, more deliverable email.

3. Switch to text-only emails​

If stripped HTML still doesn't get through:

  1. Go back to Email delivery
  2. Add the same domain
  3. Select Text from the dropdown
  4. Click Add domain — this replaces the existing Stripped HTML entry
  5. Try sending again

This sends text-only emails to recipients on that domain. If that still fails, contact support.

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