Frequently Asked Questions
Find answers to common questions about email verification.
What percentage of catch-alls should I keep vs. remove?
Keep only the small fraction of catch-alls that are actively engaging with your emails. Suppress the rest to protect your sender reputation.
Do ESPs treat catch-all-heavy lists differently?
Yes. Mailbox providers reward engagement. Sending to lists with many low-engagement addresses (like unmonitored catch-alls) signals poor list quality and increases your risk of landing in spam.
Are there legal/privacy considerations?
Yes. Regulations often require clear consent and a lawful basis for communication. Sending to a catch-all address creates ambiguity about whether you've reached the consenting individual. We recommend you consult your legal team for jurisdiction-specific guidance.
Can catch-alls be spam traps?
Yes, dormant email addresses are sometimes converted into catch-alls that function as spam traps. Hitting a trap can lead to your domain or IP being immediately blocklisted.
How can I avoid collecting catch-alls at signup?
Use pre-send list validation to check your emails before a campaign. Additionally, using a double opt-in process helps confirm that a real, engaged person is behind the address you collected.
More blogs like this:
Bulk Email Verification Services in 2026
Clean, validate, and protect your email lists with bulk email verification services. Reduce bounces, detect risky addresses, and improve deliverability. Start now.
Thursday, September 4, 2025
Best Email Deliverability Services & Tools (2026 Guide)
Discover the best email deliverability services & tools for 2026. Compare SMTP providers, testing platforms, and validation tools.
Wednesday, September 3, 2025
Free AI Subject Line Generator + 10 Proven Prompt Formulas
Steal 10 proven AI AI Subject Line Generator prompt formulas for higher opens. Generate subject lines instantly with the free tools.
Thursday, August 28, 2025
Stay Ahead in Email Marketing
Join marketers who get fresh strategies, growth ideas, and new feature updates — only the useful stuff, no spam.
