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A/B Test Significance Calculator

Calculate whether your A/B test results are statistically significant. Test subj

CAN-SPAM Compliance Checklist Generator

Free CAN-SPAM compliance checklist generator. Audit your email program against e

CASL (Canada) Compliance Checker

Check your email campaigns against Canada's Anti-Spam Legislation (CASL). Run an

Countdown Timer Generator for Email

Free countdown timer generator for email campaigns. Design an animated GIF count

Custom Domain Email Setup Checker

Check your custom domain email setup in seconds. Verify MX records, SPF, DKIM, a

Double Opt-In Confirmation Email Generator

Free double opt-in confirmation email generator. Build a responsive, Outlook-saf

Duplicate Email Remover

Remove duplicate email addresses from your list instantly. Detect duplicates wit

Email Attachment Image Compressor

Compress email attachment images locally in your browser. Batch resize, convert

Email Banner & Header Size Template Generator

Get the right dimensions for email header banners, hero images, promo banners, a

Email Blacklist Checker

Check an email-sending IP address or domain against common DNSBL query zones. Ge

Email Bounce Rate Calculator

Calculate email bounce rate, separate hard vs soft bounces, estimate deliverabil

Email Broken Link Checker

Check every link in your email HTML before you send. Detect broken relative URLs

Email Churn Rate Calculator

Calculate your email list churn rate, retention rate, and average subscriber lif

Email Client Preview

Preview how your HTML email renders across Outlook, Gmail, Apple Mail, Yahoo Mai

Email Color & Contrast Checker

Check color contrast ratios in your HTML email for WCAG compliance. Analyze back

Email Conversion Rate Calculator

Calculate email conversion rate, revenue per email, cost per acquisition, and fu

Coupon & Promo Code Generator for Email Campaigns

Generate single or bulk unique coupon and promo codes for email marketing campai

Email CTR Calculator

Calculate email click-through rate (CTR), click-to-open rate (CTOR), per-link cl

Email Dark Mode Preview

Preview how your HTML email renders in dark mode across Outlook, Gmail, Apple Ma

Email Engagement Score Calculator

Calculate a rule-based engagement score for your email subscribers using opens,

Email File Size Checker

Check your email HTML file size, estimate loading impact, and spot Gmail clippin

Email Footer & Compliance Text Generator

Build a CAN-SPAM compliant email footer with your physical address, permission r

Email Frequency Calculator

Find your optimal email send frequency based on industry, audience type, and eng

Email GDPR Consent Checklist Generator

Build a GDPR-ready email consent checkbox and privacy blurb for your signup form

Email HTML to Plain-Text Converter

Convert email HTML into a clean, client-friendly plain-text version. Extract vis

Email HTML Validator

Validate your email HTML before sending. Check tag structure, unsupported tags,

Email Image Alt-Text Checker

Check email HTML for missing, empty, duplicate, and weak image alt text. Improve

Email List Growth Calculator

Calculate email list growth rate, net subscriber gain, monthly projection, and t

Email Merge Tag & Variable Validator

Validate email merge tags and template variables for generic {{variables}}, Mail

Email Mobile Responsiveness Checker

Test how your HTML email renders on mobile phones, tablets, and desktops. Previe

Email Open Rate Calculator

Calculate email open rate, click-through rate, bounce rate, unsubscribe rate, co

Email Personalization Tag Checker

Check email personalization tags such as {{first_name}} for malformed syntax, un

Email Marketing Revenue Calculator

Calculate email marketing revenue per email sent, per subscriber, per campaign,

Email ROI Calculator

Calculate email marketing ROI, profit margin, revenue per subscriber, cost per c

Email Send Time Optimizer

Find the optimal day and time to send your email campaigns based on industry ben

Email Signature Generator

Create a professional, responsive HTML email signature with contact details, log

Email Spam Score Checker

Check email subject lines and copy for spam-trigger words, risky formatting, lin

Email Spam Trigger Word Finder

Find common spam trigger words in email subject lines and copy. Review promotion

Email Subject Line Length Checker

Measure your email subject line in characters and rendered pixels. See how it wi

Email Subject Line Preview Tool

Preview how your email sender name, subject line, and preheader will look in Gma

Email Syntax Validator

Validate email address syntax with advanced regex checks. Detect formatting erro

Email Template Builder

Build a responsive email template with drag-and-drop blocks: headers, heroes, te

Email Tracking Pixel Generator

Free email tracking pixel generator. Build a 1x1 transparent open-tracking pixel

Email Unsubscribe Rate Calculator

Calculate email unsubscribe rate, list churn, subscriber lifetime, complaint rat

Email Unsubscribe Link Generator

Generate the correct unsubscribe merge tag for Mailchimp, Klaviyo, SendGrid, Hub

Email Unsubscribe Link Validator

Check email HTML for unsubscribe links, visible opt-out language, mailto URLs, m

Email UTM Parameter Generator

Build properly formatted UTM tracking links for your email campaigns. Generate a

Email Verifier

Verify email addresses by checking domain existence, MX records, mail server con

Email Width & Dimension Checker

Analyze your HTML email dimensions: content width, table widths, image sizes, pa

Free Email Provider Detector

Detect free email providers like Gmail, Yahoo, Outlook, and 400+ others. Classif

Inline CSS Converter

Convert your email CSS into inline styles automatically. Advanced CSS inliner th

IP Warm-Up Schedule Calculator

Free IP warm-up planner for cold sending IPs and new domains. Build a day-by-day

Privacy Policy Snippet Generator for Email Signups

Generate a ready-to-paste privacy policy snippet and consent checkbox for your e

QR Code Generator for Email

Free QR code generator built for email marketing. Create trackable QR codes with

Role-Based Email Detector

Detect role-based email addresses like info@, admin@, support@, sales@, and 80+