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          DeBounce Blog

            Blog. Stories, thoughts, and data for reaching more customers. banner graphic element. Verify emails with thousands of new integrations.
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          * Articles

            Email Unsubscribe Rate: Benchmarks, Formula, and Causes

            A healthy email unsubscribe rate is below 0.5% per campaign; above 1% is a consistent red flag worth investigating across content, frequency, and...

                DeBounce
              May 30th, 2026

            How to Validate Email in JavaScript: Four Reliable Methods

            Client-side JavaScript, whether HTML5 attributes, regex, or libraries, can only confirm email format. It cannot verify that a mailbox exists or that an...

                DeBounce
              May 30th, 2026

            Email Lead Generation: Tactics, Best Practices, and KPIs

            Email lead generation usually works through inbound lead capture and outbound prospecting. Inbound brings in people who show interest through your own channels,...

                DeBounce
              Jun 3rd, 2026

            Top Email Spam Trigger Words to Avoid in 2026

            Spam trigger words raise filter scores when stacked together, written in all caps, or placed in subject lines that don't match the email...

                DeBounce
              Jun 3rd, 2026

            Email Subdomain: Best Practices, Examples, and What to Avoid

            The highest-impact subdomain decision is separating marketing, transactional, and outbound traffic. Transactional emails should always have the strongest deliverability protection because they trigger...

                DeBounce
              Jun 3rd, 2026

            Best Ways for Google Sheets Email Validation in 2026

            Standard Google Sheets formulas only check email syntax; they can't confirm whether a mailbox actually exists, which is the check that matters for...

                DeBounce
              May 12th, 2026

            How to Avoid Spam Filters and Reach the Inbox

            Modern spam filters score emails across four signal categories: sender reputation, authentication results, content and design, and recipient engagement. Weak signals in multiple...

                DeBounce
              May 19th, 2026

            GDPR Email Marketing: Rules, Consent, and Compliance

            GDPR classifies email addresses as personal data, which means every subscriber on your list falls under the regulation's requirements. Consent must be freely...

                DeBounce
              May 15th, 2026

            Dedicated IP vs. Shared IP: Which One Should You Use?

            When comparing dedicated vs. shared IP for email, the differences show up in the control you have, how quickly you can send, and...

                DeBounce
              May 12th, 2026

            What Is an Email Autoresponder and How Does It Work?

            An email autoresponder sends pre-written emails automatically based on a trigger, condition, and timing rule. Welcome series consistently deliver the highest open and...

                DeBounce
              May 11th, 2026

            Dynamic Email Content: Types, Examples, and Best Practices

            Dynamic email content replaces static, one-size-fits-all messaging with personalized content blocks that adapt per recipient based on data, behavior, or real-time signals. Engagement...

                DeBounce
              Apr 28th, 2026

            Microsoft SNDS: Solve Your Hotmail & Outlook Inbox Problems

            Microsoft SNDS is a free, IP-centric reporting tool that shows your reputation with Outlook, Hotmail, and Live. The three filter statuses (Green, Yellow,...

                DeBounce
              Apr 27th, 2026

            What Is Mail Routing? How Email Gets Delivered

            Mail routing describes how email moves from a sending server to a receiving inbox through a series of DNS queries and server connections....

                DeBounce
              Apr 25th, 2026

            What Is Data Enrichment? Definition, Types, and Benefits

            Data enrichment adds missing context to existing records, helping you understand who your contacts are and how to work with them. It is...

                DeBounce
              Apr 27th, 2026

            Email Regex: Patterns to Validate Email Addresses

            Email regex checks format only: it cannot confirm whether an address actually exists or is active. A well-written email regex covers the local...

                DeBounce
              Apr 27th, 2026

            What Is a PTR Record and How Does It Work?

            A PTR record performs reverse DNS lookup: it resolves an IP address to a hostname, rather than the other way around. Mail servers...

                DeBounce
              Apr 24th, 2026

            Email Personalization: How to Go Beyond the First Name

            True email personalization uses behavioral, demographic, and real-time data to make every message feel relevant. Personalization only works when the underlying data is...

                DeBounce
              Apr 24th, 2026

            What Is an MX Record? Definition and Setup Guide

            An MX record is a DNS entry that points incoming email to the correct mail server for your domain. Every MX record carries...

                DeBounce
              Apr 15th, 2026

            What is Email Warmup? Boost Your Inbox Placement

            Skipping warmup on a new domain or IP often leads to throttling, spam placement, or blocked delivery. Strong warmups depend on clean lists,...

                DeBounce
              Mar 30th, 2026

            How to Check Email Domain Reputation: The 2026 Guide

            Domain reputation is a trust score that decides whether your emails reach the inbox or get filtered to spam. Monitoring domain reputation requires...

                DeBounce
              Mar 31st, 2026

            How to Improve Email Click-Through Rate (CTR)

            Email CTR measures the percentage of recipients who clicked at least one link in your email. Low CTR can be a content, design,...

                DeBounce
              Mar 31st, 2026
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      Don't let bounce, disposable, spam-trap and deactivated emails decrease your sending reputation, waste your time and money. 30% of emails go bad in just one year. If over 10% of your emails are bad, then less than 44% are delivered. Use a bulk email verification tool to eliminate any bad emails.

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    * Solutions
          + Email List Validation Easily clean and verify your email lists
          + Email Validation API Integrate validation into your app
          + Real-Time Validation Widget Instant email checks with our JS widget
          + Catch-all Validator Identify and filter risky catch-all domains
          + Email List Monitoring Automatically keep your lists fresh daily
          + Data Enrichment Enhance your data with names, photos, and more
          + Email Finder Find and verify accurate email leads quickly
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