Free Email Tools

Check if an email address is valid and deliverable.

Calculate open rate, CTR, ROI, and conversion rates.

Generate email address ideas from your name.

Detect temporary and fake email addresses.

Create professional HTML email signatures.

Verify your domain's SPF record configuration.

Score your subject lines for better open rates.

Create email buttons that work everywhere.

Verify your domain's DKIM signature setup.

Analyze email routing and authentication.

Verify your domain's DMARC policy configuration.

Find mail servers for any domain.

Check BIMI logo configuration for email branding.

Check domain registration and ownership details.

Calculate IP ranges from CIDR notation.

Plan your email warmup schedule.

Check if your domain/IP is blacklisted.

Create trackable UTM links for campaigns.

Check if your A/B test results are significant.

Create preview text for your emails.

Find spam trigger words in your content.

Check global DNS record propagation.

Check CAN-SPAM compliance for your emails.

Count words and estimate reading time.

Build SPF records for your domain.

Generate DMARC policy records.

Generate one-click unsubscribe headers.

Calculate and benchmark your bounce rate.

Project email list growth over time.

Audit your email deliverability setup.

Calculate email ROI for SaaS businesses.

Check email HTML for accessibility issues.

Find the best time to send your emails.

Plan your email platform migration.

Generate DKIM DNS records for email signing.

Check color contrast for email accessibility.

Optimize preview text for every email client.

Score your domain's email deliverability setup.

Calculate and benchmark your unsubscribe rate.

Find your ideal email sending frequency.

Check email size and Gmail clipping risk.

Calculate lost revenue from abandoned carts.

Convert email HTML to plain text.

Check your domain's email reputation score.

Create compliant email footers with your business info.

Convert CSS to inline styles for email HTML.

Create mailto links with pre-filled fields.

See how your subject line truncates across email clients.

Decode SMTP bounce codes with fixes.

Generate MTA-STS policy and DNS records.

Generate catchy newsletter names for any topic.

Check if an email has a Gravatar image.

Preview emails at different screen sizes.

Generate countdown timer HTML for emails.

Resolve SPF includes to reduce DNS lookups.

Check your spam complaint rate against provider thresholds.

Calculate your cost per 1,000 emails sent.

Calculate conversion rate and revenue per email.

Calculate churn rate and customer lifetime for SaaS.

Calculate email campaign ROI with industry benchmarks.

Calculate and benchmark your email open rate.

Calculate and benchmark your email click-through rate.

Calculate click-to-open rate for email content quality.

Calculate MRR, ARR, and SaaS Quick Ratio.

Calculate CLV for e-commerce or SaaS businesses.

Calculate CAC and LTV:CAC ratio.

Calculate NPS from survey responses.

See how your email looks in dark mode.

Check if your email has enough text vs images.

Test email validation regex patterns.

Convert images to base64 for email embedding.

Validate SVG logos for BIMI compliance.

Merge tag syntax for every major ESP.

Generate email open tracking pixel code.

Generate test email addresses for development.

Find broken links in your email HTML.

Check your email practices against GDPR.

Calculate year-over-year growth rates with industry benchmarks.

Calculate win rates with benchmarks and pipeline analysis.

Calculate ROAS with profit analysis and channel benchmarks.

Calculate cost per click with budget planning and benchmarks.

Calculate month-over-month growth rates with trend analysis.

Calculate attrition and retention rates with industry benchmarks.

Calculate cost per unit with detailed breakdown and scaling.

Calculate TikTok engagement rate with virality scoring.

Find the perfect email banner dimensions for any campaign.

Find the right dimensions for every part of your email signature.

Check if your attachment fits your email provider's limits.

Find the right dimensions for your email header images.

Check CNAME records and identify hosting services for any domain.

Learn when to use A records vs CNAME records for your domain.

Find the perfect email sign-off for any situation.

Replace overused email phrases with better alternatives.

Find the perfect closing sentence for any email.

70+ email marketing abbreviations explained in plain English

Decode bounce messages and SMTP errors into plain English

How email threading works — from Re: to Message-ID headers

Check if your sender address is hurting deliverability

Complete guide to distribution lists — types, setup, and best practices

What Re: means in email — origin, usage, and etiquette

Generate powerful email opening lines across 8 hook categories and 4 tones.

Complete SSL/TLS reference for email security — versions, ports, issues, and checklist.

Generate review request emails customized by business type, tone, and review platform.

Convert markdown to email-compatible HTML with inline styles.