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Email deliverability tester

Email deliverability tester

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Check inbox placement risk by reviewing authentication, domain reputation, and message content. Get clear fixes to improve delivery and reduce spam filtering.

Want to scrape data in bulk? Try Thunderbit for free.

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Improve Email Delivery With ThunderbitUse Thunderbit to extract and organize website data fast with AI-powered scraping and automation. Capture structured information from pages, PDFs, docs, and images, then export to Sheets, Airtable, or Notion.
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Improve Email Delivery With Thunderbit

Need website data for outreach or operations? Thunderbit scrapes pages, subpages, PDFs, docs, and images, then turns what it finds into structured fields you can review and refine. You can summarize, categorize, and format the data as you scrape, then export it to Google Sheets, Airtable, or Notion for sharing and follow up.

How to Test Email Deliverability Using Thunderbit

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STEP 1Download and InstallDownload and install the Thunderbit Chrome Extension from the Thunderbit Chrome Extension Download Page. Once installed, log in or create a free account to get started.
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STEP 2Open ExtensionOpen the page where you want to test your email deliverability, then launch the Thunderbit Chrome Extension. In the tool menu, select Email Deliverability Tester. Enter the recipient email address, paste the full email content, and add the sender domain if you have it.
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STEP 3Click the Test Deliverability ButtonClick the Test Deliverability button. Thunderbit will analyze authentication, domain reputation, and content quality, then return a report with an inbox, spam, or rejection assessment along with scores and recommendations. Review the results and use the guidance to improve your email before sending.

Learn how to test email deliverability

Analyze Inbox Placement

Test an email address and message before you send it to see whether it is likely to reach the inbox, land in spam, or get rejected. The tool reviews the email content along with the recipient address and optional sender domain, then gives you a clear deliverability assessment. It is useful for marketers, sales teams, and anyone who relies on email to reach people reliably.
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Check Authentication and Reputation

The tool evaluates key technical signals such as authentication and domain reputation, plus the quality of the message content. This helps you spot problems that may hurt delivery, such as weak sender trust or content that looks suspicious to email filters. Instead of guessing why an email underperforms, you get a structured report that points to the likely cause.
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Review Actionable Recommendations

After the analysis, you receive practical suggestions to improve deliverability, such as refining the message, strengthening sender setup, or reducing spam triggers. This makes it easier to fix issues before launching a campaign. The report can guide your next draft, support email QA workflows, and help teams keep outbound sending more consistent and reliable.
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Validate Emails for Sales and Marketing

Sales and marketing teams can use this tool to test outreach emails before sending them at scale. It helps reduce wasted sends, protect sender reputation, and improve the odds that important messages are read. Whether you are preparing a cold outreach sequence, a newsletter, or a transactional message, the report helps you make better sending decisions.
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What users say about Thunderbit

Taryn W.Growth Strategist@Thunderbit changed how I run competitor research. I click 'AI Suggest Fields,' and it builds a clean table across paginated results—no coding, no CSS. Huge time-saver when analyzing product data from long-tail marketplaces.
Miles T.Sales Development ConsultantI use Thunderbit to grab emails and phone numbers from directories. It extracts clean contact info in one click, and exporting to Sheets or Notion takes seconds. No extra setup, no coding—just usable data ready to work with.
Rhea C.E-commerce AnalystThunderbit helps me monitor SKU data across multiple pages. I scrape the listings, then use Subpage Scraping to pull full product specs, pricing, reviews, and stock. The AI organizes everything into columns I define.
Cassian B.Real Estate AdvisorThunderbit's Scheduled Scraper makes real estate tracking easier. I describe the interval in plain English, and it automatically pulls updated listings, prices, and links without touching the setup again. Simple and very practical.
Dorian B.Content & SEO SpecialistI use Thunderbit's Field AI Prompts to clean and tag scraped blog content. It extracts titles, authors, and even suggests categories. Works great across dynamic sites and subpages—perfect for building structured SEO datasets.
Lina K.Marketplace Operations LeadWe track SKUs from niche stores using Thunderbit. Cloud Scraping handles 50 pages at a time, and for login-required sites, we switch to browser mode. It’s fast, flexible, and doesn’t need ongoing maintenance or manual edits.
Jorge F.Inbound Sales ManagerThunderbit’s AI Autofill is a lifesaver. After scraping contact info, I use it to fill lead forms directly in my browser. I just select the tab, and it fills everything using the scraped row. No manual input needed.
Alina D.Freelance ResearcherI rely on Thunderbit for extracting data from PDFs, image-based sites, and infinite scroll pages. It handles messy formats with AI and delivers ready-to-export tables I can send to Google Sheets or Airtable in seconds.
Taryn W.Growth Strategist@Thunderbit changed how I run competitor research. I click 'AI Suggest Fields,' and it builds a clean table across paginated results—no coding, no CSS. Huge time-saver when analyzing product data from long-tail marketplaces.
Miles T.Sales Development ConsultantI use Thunderbit to grab emails and phone numbers from directories. It extracts clean contact info in one click, and exporting to Sheets or Notion takes seconds. No extra setup, no coding—just usable data ready to work with.
Rhea C.E-commerce AnalystThunderbit helps me monitor SKU data across multiple pages. I scrape the listings, then use Subpage Scraping to pull full product specs, pricing, reviews, and stock. The AI organizes everything into columns I define.
Cassian B.Real Estate AdvisorThunderbit's Scheduled Scraper makes real estate tracking easier. I describe the interval in plain English, and it automatically pulls updated listings, prices, and links without touching the setup again. Simple and very practical.
Dorian B.Content & SEO SpecialistI use Thunderbit's Field AI Prompts to clean and tag scraped blog content. It extracts titles, authors, and even suggests categories. Works great across dynamic sites and subpages—perfect for building structured SEO datasets.
Lina K.Marketplace Operations LeadWe track SKUs from niche stores using Thunderbit. Cloud Scraping handles 50 pages at a time, and for login-required sites, we switch to browser mode. It’s fast, flexible, and doesn’t need ongoing maintenance or manual edits.
Jorge F.Inbound Sales ManagerThunderbit’s AI Autofill is a lifesaver. After scraping contact info, I use it to fill lead forms directly in my browser. I just select the tab, and it fills everything using the scraped row. No manual input needed.
Alina D.Freelance ResearcherI rely on Thunderbit for extracting data from PDFs, image-based sites, and infinite scroll pages. It handles messy formats with AI and delivers ready-to-export tables I can send to Google Sheets or Airtable in seconds.

Frequently Asked Questions

Extract Data using AI
Easily transfer data to Google Sheets, Airtable, or Notion
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PRODUCT HUNT#1 Product of the Week
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