Define properties with names, descriptions, and types to generate JSON schemas. Supports strings, arrays, numbers, booleans, and timestamps with configurable length constraints.

Build JSON schemas visually

JSON schema builder

Generate one-click calendar event links for Google Calendar, Apple Calendar, Outlook, Yahoo, and more. Create Add to Calendar buttons and downloadable ICS files to boost event attendance in your emails and notifications.

Create calendar event links instantly

Calendar link generator

Create mailto links with pre-filled recipients, subject lines, body text, CC, and BCC fields. Generate properly encoded email links that work across all email clients and embed them in your notification templates.

Build pre-filled email links easily

Mailto link generator

Add source, medium, campaign, content, and term UTM parameters to your links. Then, use your ready-to-use tracking link to measure clicks and conversions across your email, social, paid search, and other campaigns.

Build campaign tracking links with UTM parameters

UTM link generator

Transform your code into beautifully styled, email-compatible HTML snippets with syntax highlighting. Choose from multiple themes and languages, then export as inline-styled HTML or PNG for use in transactional emails and notifications.

Create email-safe syntax highlighted code

Code snippet generator

Generate VAPID (Voluntary Application Server Identification) key pairs for web push notifications.

Generate VAPID keys for web push notifications

VAPID key generator

Calculate statistical significance for your A/B tests. Enter audience and conversion data to determine if your results are statistically significant with confidence levels and p-values.

Calculate A/B test statistical significance

A/B testing statistical significance calculator

Enter your campaign's send, delivery, and engagement counts to calculate common campaign metrics like deliverability, open and click-through rates, ROAS, and other campaign metrics.

Calculate email, push, SMS, ad, and web campaign metrics

Campaign metrics calculator

Set a target daily volume and warmup pace to generate a day-by-day ramp for a new domain or IP. Export the schedule as CSV and compare each day to your goal with interactive progress bars.

Plan a day-by-day email domain warmup schedule

Email domain warmup calculator

Generate realistic text message previews for iPhone and Android devices. Customize contact names, message content, and device settings to create professional mockups for your SMS notifications.

Create realistic iPhone and Android text message mockups

SMS message preview generator

Generate realistic RCS message previews for iPhone and Android devices. Customize sender details, rich media cards, action buttons, and message content to create professional mockups for your RCS notifications.

Create realistic iPhone and Android RCS message mockups

RCS message preview generator

Generate realistic WhatsApp message previews for iPhone and Android devices. Customize sender names, message content, and device settings to create professional mockups for your WhatsApp notifications.

Create realistic iPhone and Android WhatsApp message mockups

WhatsApp preview generator

Generate realistic push notification previews for iPhone and Android devices. Customize icons and message content to create professional mockups for your push notifications.

Create realistic iPhone and Android push notification mockups

Push notification preview generator

Build a realistic Slack channel message preview with avatars, body text, and optional header and action buttons. Export a PNG for professional mockups of your Slack notifications.

Create Slack channel message mockups

Slack preview generator

Build a realistic Microsoft Teams chat preview with a bot message, avatars, body text, and optional header and action buttons. Export a PNG for professional mockups of your Teams notifications.

Create Microsoft Teams chat message mockups

Microsoft Teams preview generator

Build a customizable in-app notification feed preview with avatars, body text, and action buttons. Then, export a PNG in light or dark theme for professional mockups of your in-app feed notifications.

Create in-app notification feed mockups

In-app feed preview generator

Look up MX records for any domain to see mail servers, priorities, and identified email providers. Troubleshoot email delivery and verify your domain's mail configuration.

Look up MX records for any domain

MX record lookup

Check SPF records for any domain to verify authorized email senders. View parsed mechanisms, validity status, and troubleshoot email deliverability issues.

Check SPF records for any domain

SPF record checker

Look up DKIM records to verify email signing configuration for any domain. Auto-detect common selectors or specify your own to check key type and public key presence.

Verify DKIM records for any domain

DKIM record checker

Validate email addresses with syntax checks, domain verification, MX record lookup, and disposable email detection. Identify free email providers and verify deliverability.

Validate email addresses with multiple checks

Email validator

Look up BIMI records to verify brand logo configuration for any domain. Check logo URL, VMC certificate presence, and raw TXT record details to ensure your brand displays in supporting email clients.

Check BIMI records for any domain

BIMI record checker

Look up and validate DMARC records for any domain. View parsed tags, policy enforcement status, alignment settings, and reporting configuration to verify your email authentication setup.

Check DMARC records for any domain

DMARC record checker

Review your commercial email against CAN-SPAM Act requirements. Answer a short checklist covering sender identification, opt-out, content, and third-party compliance to check if your email is compliant.

Check commercial email against CAN-SPAM Act requirements

CAN-SPAM compliance checker

Paste or upload email HTML to find missing alt text, contrast failures, heading problems, ambiguous links, and other accessibility issues. This is a checker, not a WCAG, ADA, or EAA compliance guarantee.

Check email HTML for accessibility issues

Email accessibility checker

Build a realistic email inbox preview with editable sender names, subject lines, and preview text. Switch between Gmail, Outlook, and Apple Mail, then review truncation limits and inbox best-practice checks before you send.

Preview email subject lines in Gmail, Outlook, and Apple Mail

Email inbox preview generator

Build an HTML email signature with your name, contact details, photo, logo, and social links. Switch between layout styles, preview it in a sample email, then copy or download the HTML for Gmail, Outlook, and Apple Mail.

Tools