BounceProtect
Clean your email lists before you send
Learn email deliverability, properly.
Practical guides on email validation, SMTP verification, catch-all domains, bounce rates, and inbox placement. Written by the team who built the validation engine.
What is a good email bounce rate and how to reduce it
Industry benchmarks for bounce rates and the most effective ways to keep yours low.
1 min read
Learning Paths
/Guided, in order
Path 01 — Beginner
0%New to email validation?
Start here. The vocabulary, the four status labels, and what to actually do with the results.
Path 02 — Intermediate
0%Improve your deliverability
SPF, DMARC, deliverability scores, and how to read the signals before you hit Send.
Path 03 — Advanced
0%Integrate the API
Use BounceProtect from your own app — REST, the MCP server, and the dashboard.
Status & Results
6 articlesWhat do the email status labels mean?
Understand Valid, Invalid, Risky, and Unknown — and what to do with each.
What is the Deliverability Score?
A 0–100 score representing how likely an email is to arrive without bouncing.
What is the Spam Risk Score?
How likely your emails are to hit spam filters — separate from whether they bounce.
What is the Send Recommendation?
An actionable verdict for every email: SEND, CAUTION, REVIEW, or DO NOT SEND.
What is a good email bounce rate and how to reduce it
Industry benchmarks for bounce rates and the most effective ways to keep yours low.
How to clean an email list before a campaign
A step-by-step guide to cleaning your email list and what to do with each result.
Domain Signals
13 articlesWhat does MX Found mean?
MX records tell the internet which mail server receives email for a domain.
What do SPF and DMARC mean?
Email authentication records that signal how seriously a domain manages its email.
What is a Catch-All Domain?
Domains that accept email to any address — even ones that don't exist.
What is Domain Typo Detection?
How we catch gmial.com, yaho.com, and other mistyped email domains.
What is SMTP mailbox verification?
How SMTP verification works, why it matters, and when results can be unreliable.
How to verify emails on catch-all domains
What catch-all domains are, why they're hard to verify, and how to handle them in your lists.
SPF and DMARC explained for marketers
What SPF and DMARC are, why they matter for email deliverability, and how to check them.
What is an SPF record and why does it matter?
SPF records tell receiving servers which IPs are authorised to send email for your domain. A missing or broken SPF record means more of your emails land in spam.
What is DMARC and how does it protect your domain?
DMARC builds on SPF and DKIM to give you control over what happens when someone tries to spoof your domain. Here is what each policy means and how to roll it out safely.
How to check and improve your email domain health
Your email domain health covers MX records, SPF, DMARC, and blacklist status. Here is what each check means and how to fix the most common issues.
How to find out which email provider a company uses
You can identify which email service provider a domain uses by reading its MX records. Here is what the most common MX patterns mean and why this matters for outbound sales.
How to create an SPF record for your domain
A step-by-step guide to building and publishing a valid SPF record. Covers how to include multiple email providers, common mistakes to avoid, and how to verify it is working.
How to create a DMARC record and roll it out safely
A practical guide to generating, publishing, and gradually rolling out DMARC. Covers the three policy levels, what the tags mean, and how to avoid blocking legitimate email.
Email Signals
2 articlesAdvanced Features
10 articlesWhat is Deep Analysis?
Extended domain inspection — website presence, SSL, legitimacy scoring, domain age.
What is the Blacklist Monitor?
Check your domains against Spamhaus, SURBL, Barracuda, and URIBL.
What is Inbox Placement?
Test whether your emails land in the inbox, spam folder, or nowhere at all.
Understanding the Domain Resolution column
What the background domain worker does and how confidence scores work.
NeverBounce alternative — how BounceProtect compares
A straight comparison of BounceProtect vs NeverBounce across features, pricing, and accuracy.
ZeroBounce alternative — how BounceProtect compares
A straight comparison of BounceProtect vs ZeroBounce across features, pricing, and accuracy.
Validate emails directly from Claude, Cursor, and AI coding assistants
How to connect BounceProtect to Claude Desktop, Cursor, and Claude Code using the Model Context Protocol (MCP) — validate emails without leaving your AI assistant.
What is a Blacklist Monitor and Why Does It Matter?
How email blacklists work, why legitimate domains get listed, and how to check your sending domain before it costs you a campaign.
How to Check if Your Domain Is Blacklisted (And What to Do About It)
A step-by-step guide to checking blacklist status, requesting delisting from Spamhaus, Barracuda, and SURBL, and fixing the root cause so you stay off them.
How to use BounceProtect with Zapier
Connect BounceProtect to HubSpot, Google Sheets, Mailchimp, and 5,000+ apps using our native Zapier integration — no code required.