# www.validity.com

> AI-optimized mirror of www.validity.com containing 50 pages totalling 40,733 words of clean markdown content, structured data, and semantic HTML. Original source: https://www.validity.com/. Last updated: 2026-04-27T14:54:18.167Z.

Each page is available as HTML (with JSON-LD structured data) and Markdown (text-only, ideal for LLMs and RAG).

## Homepage

- [Built for the next era of email.](/site-root.html): Leading companies worldwide rely on Validity products, including DemandTools, Litmus, and BriteVerify—for marketing success. (502 words)

## Articles & Blog Posts

- [blog/processor-and-controller-obligations-under-gdpr-a-cheat-sheet.html](/blog/processor-and-controller-obligations-under-gdpr-a-cheat-sheet.html) (1 words)
- [blog/gdpr-101/index.html](/blog/gdpr-101/index.html) (1 words)
- [blog/gdpr-impact-for-non-eu-companies/index.html](/blog/gdpr-impact-for-non-eu-companies/index.html) (1 words)
- [blog/how-to-choose-an-email-service-provider/index.html](/blog/how-to-choose-an-email-service-provider/index.html) (1 words)
- [blog/reach-and-retain-tips-and-tricks-for-the-email-game.html](/blog/reach-and-retain-tips-and-tricks-for-the-email-game.html) (1 words)
- [blog/the-anatomy-of-a-good-email/index.html](/blog/the-anatomy-of-a-good-email/index.html) (1 words)
- [Post up with our guide to Google Postmaster Tools.](/blog/post-up-with-our-guide-to-google-postmaster-tools/index.html): This guide to Google Postmaster Tools will help those who want to try the new feature since it has proven to be a useful resource to optimize email. (1,510 words)
- [blog/top-500-internet-retailers-email-sign-ups-2016/index.html](/blog/top-500-internet-retailers-email-sign-ups-2016/index.html) (1 words)
- [Making Sense of Legitimate Interest Under the GDPR](/blog/making-sense-of-legitimate-interest-under-the-gdpr/index.html): The GDPR provides six legal exemptions to process consumer data and marketers will benefit from this clarification on what qualifies as legitimate interest. (1,607 words)
- [The Secrets to Better Gmail Deliverability](/blog/the-secrets-to-better-gmail-deliverability/index.html): Gmail presents a challenge to marketers with its comprehensive email verification process so using this helpful analysis will help with overcoming some of them. (1,482 words)
- [blog/6-reasons-to-treat-inactive-subscribers-like-zombies.html](/blog/6-reasons-to-treat-inactive-subscribers-like-zombies.html) (1 words)
- [blog/asking-for-preferences-yes-you-can-do-it-too/index.html](/blog/asking-for-preferences-yes-you-can-do-it-too/index.html) (1 words)
- [How Do You Measure Email Deliverability?](/blog/how-do-you-measure-email-deliverability/index.html): Finding data to produce metrics is easy, but determining which data points are worth analysis can be trickier without this guide to what is most important. (1,406 words)
- [blog/x-headers-what-they-are-and-13-ideas-on-using-them-to-measure-email-marketing-performance.html](/blog/x-headers-what-they-are-and-13-ideas-on-using-them-to-measure-email-marketing-performance.html) (1 words)
- [7 Email Reactivation Campaign Insights](/blog/7-email-reactivation-campaign-insights/index.html): Key insights into the reactivation campaigns that target inactive emails and how effective they are at sparking engagement now or in the future. (1,385 words)
- [Deliverability 101: Don’t forget about your sender name, subject line, and preview text.](/blog/deliverability-101-dont-forget-about-your-sender-name-subject-line-and-preview-text.html): Remembering the importance of a first impression reveals how critical the sender name, subject line, and preview texts are that subscribers engage with first. (1,411 words)
- [7 Great Examples of a Perfect E-Receipt](/blog/7-great-examples-of-a-perfect-e-receipt/index.html): Examples of receipts that market the next transaction instead of accepting the final sale by promoting other rewards, apps, or feedback, and adding branding. (1,283 words)
- [Email Sender Reputation: Decoded](/blog/email-sender-reputation-decoded/index.html): A review of sender reputation reveals it's determined by send history, spend volume as well as list quality and its critical role as deliverability indicator. (1,302 words)
- [How to Authenticate Your Bounce Messages with DMARC](/blog/how-to-authenticate-your-bounce-messages-with-dmarc.html): The case for authenticating bounce messages is that they contain info that impacts business which gets overlooked, but is worth the extra steps outlined here. (1,373 words)
- [Seriously, you don’t need to keep tabs on Gmail tab placement.](/blog/seriously-you-dont-need-to-keep-tabs-on-gmail-tab-placement.html): Since you can't game the Google system to go from promotions to primary tabs, learning how to work through email sending best practices is the best way to go. (1,293 words)
- [blog/a-day-in-the-life/index.html](/blog/a-day-in-the-life/index.html) (1 words)
- [Gmail's Nontraditional Feedback Loop](/blog/gmails-nontraditional-feedback-loop/index.html): A Gmail feedback loop (FBL) allows senders to see complaints to pinpoint problematic mail streams without needing to impose on individual consumer privacy. (1,422 words)
- [Gmail Testing "Top Picks", Expiration Warning for Promotional Emails](/blog/gmail-testing-top-picks-expiration-warning-for-promotional-emails.html): Gmail is trying new features for their promotional email tab with a Top Picks section separate from the other emails and focuses on deals that are expiring. (1,330 words)
- [Your email list is invalid: What are you doing about it?](/blog/your-email-list-is-invalid-what-are-you-doing-about-it.html): Each day your email list is closer to decay at a rate of 2.1%/month, but by understanding the causes outlined here marketers can try to avoid hard bounces. (1,009 words)
- [Help! I’m Suspended for Sender Reputation Data (SRD)](/blog/help-im-suspended-for-sender-reputation-data-srd/index.html): SRD gives an objective view of customer satisfaction, but without being able to remove dissatisfied readers there are still other ways to decrease junk votes. (1,230 words)
- [Improve Customer Service Using Reminder Emails](/blog/improve-customer-service-using-reminder-emails/index.html): In order to utilize reminder emails to enhance the connection with subscribers you'll want to review this list of good and bad practices first. (1,653 words)
- [What is GDPR and Why is it Important?](/blog/what-is-gdpr-and-why-is-it-important/index.html): The EU’s General Data Protection Regulation (GDPR) is data protection legislation that protects users and marketers need to know so they can be in compliance. (1,174 words)
- [blog/anniversary-emails-triggered-emails-for-increased-engagement.html](/blog/anniversary-emails-triggered-emails-for-increased-engagement.html) (1 words)
- [What’s an FBL?](/blog/whats-an-fbl/index.html): This details the history of spam complaint feedback starting in the early 90s until the feedback loop (FBL) was created and refers to any part of the process. (1,546 words)
- [blog/an-email-marketers-guide-to-wirtualna-polska/index.html](/blog/an-email-marketers-guide-to-wirtualna-polska/index.html) (1 words)
- [All About Yahoo’s DMARC Reject Policy](/blog/all-about-yahoos-dmarc-reject-policy/index.html): Yahoo was the first major provider to enact a DMARC (Domain-based Message Authentication, Reporting and Conformance) policy for rejection to boost brand trust. (1,455 words)
- [Email Verification: A Dummies Guide to Selecting a Vendor](/blog/email-verification-a-dummies-guide-to-selecting-a-vendor.html): Be sure to use this checklist to guide your vendor selection to match with the partners who best align with your company goals of deliverability. (1,536 words)
- [Terra Mail’s Free Email Service Closure](/blog/terra-mails-free-email-service-closure/index.html): An announcement revealing the closure of the free email service, Terra Mail which was popularized in Latin America so marketers need to address this region. (937 words)
- [5 Tips on How to Secure Your Mail Server](/blog/5-tips-on-how-to-secure-your-mail-server/index.html): Tips for securing your mail server to establish a trustworthy sender reputation and avoiding sending spam that will lead to a drop in subscriber engagement. (1,174 words)
- [Deliverability Defined—And Why It Matters](/blog/deliverability-defined-and-why-it-matters/index.html): Deliverability, not to be confused with the delivered rate, is the key metric to track because it measures inbox placement rate, not just if it was delivered. (1,058 words)
- [Email Marketers And The Law Of Diminishing Returns](/blog/email-marketers-and-the-law-of-diminishing-returns/index.html): Striking the balance between adding email addresses to boost profit without contaminating lists with defunct emails to keep email monitoring variables constant. (1,189 words)
- [Avalanche Of Disposable Addresses](/blog/avalanche-of-disposable-addresses/index.html): Avoiding real spam or seeming like spam with an abundance of newsletters with subscribers who turn to disposable email accounts reducing email deliverability. (1,050 words)
- [SpamAssasin Rarely Misses](/blog/spamassasin-rarely-misses/index.html): Widely popular award-winning SpamAssassin has announced its first major update and this reviews its main functions of scoring spam and filtering it out. (1,543 words)
- [How Yahoo’s Image Caching Will Impact Your Email Marketing Metrics](/blog/how-yahoos-image-caching-will-impact-your-email-marketing-metrics.html): With Yahoo Mail deploying image proxy servers it is important to understand how it affects open rates, geolocation, and device information. (937 words)
- [blog/understanding-the-precedence-header/index.html](/blog/understanding-the-precedence-header/index.html) (1 words)
- [A Retail Example of Email Validation ROI](/blog/a-retail-example-of-email-validation-roi/index.html): Return Path technology provides improved email deliverability and email validation which promotes ROI for their retail partners. (710 words)
- [Google Is Failing Your Perfectly Good DKIM Key (and Why That’s a Good Thing)](/blog/google-is-failing-your-perfectly-good-dkim-key-and-why-thats-a-good-thing.html): Once someone was able to crack Google's weak 512-bit DKIM they updated security requirements to a 1024-bit DKIM key meaning that substandard keys get rejected. (1,010 words)
- [No Results Found](/blog/webinar-the-power-of-competitive-insight-for-marketers-in-australia-and-new-zealand.html) (25 words)
- [Want to Get into Gmail? Check Your Sender Score (Plus 4 More Tips)](/blog/want-to-get-into-gmail-check-your-sender-score-plus-4-more-tips.html): Tips for getting into Gmail involve monitoring Sender Score, retaining permissions, authentication, offering list-unsubscribe options, and using different IPs. (1,249 words)
- [Webinar: Improve Email Deliverability: Tactics for Handling Complaints and Boosting Reputation](/blog/webinar-improve-email-deliverability-tactics-for-handling-complaints-and-boosting-reputation-post-event-qa.html) (713 words)
- [demandtools/pricing/index.html](/demandtools/pricing/index.html) (1 words)
- [privacy-policy/index.html](/privacy-policy/index.html) (1 words)
- [Great in Germany: German Email Marketing Tactics All Senders Should Use](/blog/german-email-marketing-tactics-all-senders-should-use.html): German email senders are the most successful in the world from a deliverability standpoint. Read this blog to learn what they're doing right. (1,640 words)
- [Validity Blog](/blog/index.html): Explore the latest insights and trends in email deliverability, CRM data quality, and marketing best practices on our blog. Stay informed and ahead of the game. (573 words)

## Resources

- [Full Page Index](/index.html): Browse all cached pages with rich metadata
- [About This Cache](/content/about.html): Methodology, technical details, and usage guidelines
- [XML Sitemap](/content/sitemap.xml): Machine-readable sitemap for crawler discovery
- [Robots.txt](/content/robots.txt): Crawler directives