Blog
Guides, deep dives, and best practices on email deliverability and validation.
Introducing AI name inference: get first names from email addresses
OhBounce.ai now returns firstName and lastName fields on every validated address, inferred by our model from the local part of the email. Here's how the model works and when to trust it.
Hard bounce vs. soft bounce: what's the difference and why it matters
Not all bounces are equal. Hard bounces signal a permanent problem; soft bounces are temporary. Treating them the same way is one of the most common deliverability mistakes we see.
Setting up email validation in your Node.js backend
A practical guide to adding OhBounce.ai to an Express or Fastify API. Covers authentication, single-address validation, bulk list scrubbing, and error handling patterns.
The anatomy of an email address: what each part tells you about deliverability
The local part, domain, TLD, and MX records each carry signals about whether an address is deliverable. Understanding what to read and what to ignore is the foundation of good validation.
From 34% open rate to 61%: a D2C brand's email hygiene story
A direct-to-consumer fashion brand was sending to a list of 220,000 contacts with a 34% open rate and rising unsubscribes. After a full validation pass and re-engagement campaign, open rates almost doubled.
How often should you validate your email list?
Email lists decay at roughly 2–3% per month. That means a 100,000-contact list loses around 2,500 valid addresses every 30 days. Here's a validation cadence that fits different business types.
Protecting your WordPress sign-up forms from fake emails
WordPress sites are a common target for bot sign-ups and throwaway addresses. This guide covers adding real-time validation to WooCommerce, WPForms, and Gravity Forms using the OhBounce.ai REST API.
Why your email sender score matters more than you think
ISPs use sender scores to decide whether your emails land in the inbox, the spam folder, or are silently dropped. We explain what goes into the score and how validation protects it.
Introducing domain age scoring in the validation response
Domains registered within the last 90 days are statistically more likely to be associated with spam or disposable services. OhBounce.ai now returns domainAgeDays on every response.