The Cost of Fake Leads
One of the biggest threats to your Email Marketing Automation ROI is “Dirty Data.” Users often want the discount without giving you their real email. They use “Burner” or “Disposable” email services (like 10minutemail.com or guerrillamail.com).
These emails self-destruct after a few minutes.
- The Result: You pay your ESP (Mailchimp/Klaviyo) to host a dead email.
- The Damage: When you send your newsletter, it hard bounces. High bounce rates damage your Sender Reputation, causing your real emails to go to Spam folders.
Our Disposable Email Blocker is your first line of defense. Ideally, you want to Prevent Fake Signups before they ever hit your database.
1. How It Works
The plugin maintains a local database of known disposable domains.
- The Check: When a user types
[email protected]and clicks “Spin,” the plugin intercepts the request. - The Lookup: It checks the domain
trashmail.comagainst our blacklist. - The Action: If a match is found, the spin is blocked. The user sees an error: “Please enter a valid, permanent email address.”
- The Outcome: The user, realizing they can’t cheat, often sighs and enters their real Gmail/Yahoo address because they really want the coupon. You win.
2. Managing the Blacklist
Built-in Lists
We update the plugin regularly with new domains. However, spammers spin up new domains daily.
Custom Blacklisting
You can manually add domains to blocking list in Spin Wheel > Settings > Security.
- Wildcards: We support wildcard blocking.
- Example:
*.xyzwill block any email ending in the cheap.xyzTLD, which is often used by bot farms.
3. List Hygiene & ROI
Email List Hygiene is not just about cleanliness; it is about money.
- Scenario: You have 10,000 subscribers. 2,000 are fake/disposable.
- Cost: You are paying Mailchimp for 10,000 contacts ($100/mo).
- Reality: You are wasting $20/mo hosting trash. Over a year, that is $240 wasted.
- Value: Enabling this feature instantly saves you that money. It forces the quality of your list up, ensuring that your open rates reflect real human engagement.
4. The “Gmail Trick” (Plus Addressing)
- The Trick: Tech-savvy users might use
[email protected]. - Our Stance: We generally allow these. These are valid emails that will reach the user’s inbox. Blocking “Plus Addressing” often punishes power users who are actually good potential customers. Our Spam Protection WordPress logic focuses on domains, not aliases.
5. Frequently Asked Questions (FAQ)
Q: How often is the built-in blacklist updated? A: We push updates to the definition file every time you update the plugin (monthly).
Q: Can I whitelist a domain if it gets blocked by accident? A: Yes, there is a “Whitelist” field right next to the Blacklist field in the Security settings. If a corporate domain company.com is falsely flagged, simply add it there.
Q: Does this block legitimate free providers like Gmail or Yahoo? A: Absolutely not. The blocker targets specifically known “Burner” services. Gmail, Yahoo, Hotmail, and Outlook are always allowed.
Q: What message does the user see when blocked? A: The default is “The email provider is not allowed.” You can customize this text in the “Labels” section of the settings to be more helpful, e.g., “Please use a permanent email address to receive your coupon.”
Conclusion
Don’t let your list become a graveyard. The Email Validator working in the background ensures that every lead you capture is an opportunity, not a dead end.