Email List Hygiene: The 2025 Guide to Cleaning, Automation, and Deliverability

Afruz Fatulla-zada11.13.2025

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Email List Hygiene: The 2025 Guide to Cleaning, Automation, and Deliverability

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Find answers to common questions about email verification.

What is Schema Markup for SEO, and does it matter for this article?

Schema markup is structured data (code) you add to your website's HTML to help Google understand its content. For a blog post like this, you would use Article schema to define the author, publish date, and headline, which builds authority.

Should I use FAQ Schema on my blog posts in 2025?

This is a key 2025 update: Probably not. Google has significantly limited FAQ-rich results (the drop-downs in search) to only high-authority government and health sites. For most commercial blogs, it's no longer an effective tactic.

Is there a different type of schema that is important for email marketers?

Yes! Email schema (e.g., EmailMessage, Order, Event) is code you put inside your email's HTML. This is what allows Gmail to show "Actions" (like "Confirm Reservation") or "Highlights" (like package tracking) in the subject line. This can dramatically improve engagement and is highly recommended for transactional emails.

Can I just buy a clean email list?

No. Never. Purchased lists are a guaranteed way to hit spam traps, destroy your sender reputation, and get blacklisted. They are not compliant with GDPR or CAN-SPAM and will kill your email program.

What's the difference between a suppression list and an unsubscribed list?

An unsubscribed list contains people who actively clicked "unsubscribe." Your ESP will automatically prevent you from mailing them. A suppression list is a list you manually upload or create to block sending. This is where you put your "Dormant" segment, hard bounces, and spam complaints. It's a "Do Not Mail" list that ensures your automated flows don't accidentally re-subscribe a bad address.

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Email List Hygiene: The 2025 Guide to Cleaning, Automation, and Deliverability

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