This article explains that an email address is automatically added to the blocklist if it hard bounces or if it is marked as spam.
Step 2: Clean Up Problematic Records
Preventing Future Bounce Issues
When an email sent from Double the Donation hard bounces or is marked as spam by the recipient, that address is automatically added to your organization’s blocklist.
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Future donation records linked to that address will show a “Blocklisted” (B) icon.
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Double the Donation will no longer send emails to that address.
This system helps protect the reputation of both your domain and Double the Donation’s domain.
Large Numbers of Bounces
If too many emails bounce back in a short period, Double the Donation temporarily pauses your account’s email sending until the issue is resolved.
Table: Bounce/Spam Thresholds
This table summarizes the thresholds that trigger an email processing block.
| Trigger | Threshold | Action Taken |
|---|---|---|
| Hard bounces | > 50 out of the last 500 emails | Email sending paused |
| Spam reports | > 20 out of the last 1000 emails | Email sending paused |
Why This Happens
High bounce rates often come from invalid or auto-generated emails entering your system, such as:
- 89223568@example.com
- thankyou028957@example.com
These are not tied to real donors and therefore bounce when emailed.
How to Fix the Issue
When your account hits the bounce threshold, you’ll see a warning banner in your Double the Donation dashboard.
Step 1: Review Invalid Emails
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Log in to your account.
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Click View Invalid Emails on the warning banner.
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Diagnose the source of invalid addresses.
Step 2: Clean Up Problematic Records
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Remove, update, or blocklist invalid email domains.
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Prevent them from flowing into Double the Donation (check your integration setup).
Step 3: Resume Sending Emails
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Once resolved, click Continue Sending Emails in the warning banner.
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Email sending will resume immediately.
If you have not yet set up CNAME records for email sending, you won’t see the restart button. In that case, contact Double the Donation support to restart email processing.
Learn how to set up your CNAME records →
Preventing Future Bounce Issues
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Blocklist problematic domains: Add domains (e.g., university.edu) under the Email Blocklist section to prevent future issues.
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Check CRM integrations (if integrated): Ensure placeholder or test emails are not being passed into Double the Donation.
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Maintain donor data hygiene: Regularly review and update donor records to reduce bounces.
FAQs
Q: What happens to an email address that bounces?
A: It’s automatically added to your blocklist, preventing future emails to that donor.
Q: Will blocklisted donors still appear in reports?
A: Yes, donation records will still flow into your account, but they will show a B (Blocklisted) status.
Q: What if my account is blocked due to too many bounces?
A: Review invalid emails → clean them up → click Continue Sending Emails in the banner.
Q: How long does the block last?
A: The block remains until you resolve the issue and restart emails.
Q: What if I don’t see the “Continue Sending Emails” button?
A: This means your account is still sending through Double the Donation’s default domain. Set up your CNAME records or contact support to restart sending.
Q: Can I blocklist entire domains?
A: Yes. Use the Email Blocklist feature to stop sending to specific domains.
In short: If an email bounces or is marked as spam, that address is blocklisted automatically. If too many bounces occur, Double the Donation temporarily pauses sending until you review invalid emails, clean them up, and restart sending.