All Tools
1,942 free developer tools, updated daily
Abstract API
API suite for various use cases, including IP geolocation, gender detection, or email validation.
AhaSend
Transactional email service, free for 1000 emails per month, with unlimited domains, team members, webhooks and message routes in the free plan.
anon.li Alias
Open source, anonymous email alias/forwarding solution with PGP encryption, reply capability, 10 random & 1 custom alias on the free plan with developer API & CLI.
AnonAddy
Open-source anonymous email forwarding, create unlimited email aliases for free
Antideo
10 API requests per hour for email verification, IP, and phone number validation in the free tier. No Credit Cards are required.
Application Services
Free DNS for an unlimited number of domains, DDoS Protection, CDN along with free SSL, Firewall rules and page rules, WAF, Bot Mitigation, Free Unmetered Rate Limiting - 1 rule per domain, Analytics, Email forwarding
Awardspace.com
Free web hosting + a free short domain, PHP, MySQL, App Installer, Email Sending & No Ads.
Axiom
Store up to 0.5 TB of logs with 30-day retention. Includes integrations with platforms like Vercel and advanced data querying with email/Discord notifiers.
BigDataCloud
Provides fast, accurate, and free (Unlimited or up to 10K-50K/month) APIs for modern web like IP Geolocation, Reverse Geocoding, Networking Insights, Email and Phone Validation, Client Info and more.
CloudMailin
Incoming email via HTTP POST and transactional outbound - 10,000 free emails/month
Conduit
Turn incoming emails into webhooks to trigger your API from emails. The service is completely free.
context.io
Create simple email webhooks and code against a free, RESTful, imap API to leverage email data
courier.com
Single API for push, in-app, email, chat, SMS, and other messaging channels with template management and other features. The free plan includes 10,000 messages/mo.
Cypress Recorder by Preflight
Create AI-powered Cypress Tests/POM models on your browser. It's open-source, except for the AI part. It's free for five monthly test creations with Self-healing scripts, Email, and Visual testing.
dkimvalidator.com
Test if the email's DNS/SPF/DKIM/DMARC settings are correct, free service by roundsphere.com
DNSExit
Up to 2 Email addresses under your domain for free with 100MB of storage space. IMAP, POP3, SMTP, SPF/DKIM support.
Dotenv
Sync your .env files, quickly & securely. Stop sharing your .env files over insecure channels like Slack and email, and never lose an important .env file again. Free for up to 3 teammates.
EmailGuard
Block disposable emails, catch typos, and validate MX records via a simple API. 100 free requests/month.
EmailJS
This is not an entire email server; this is just an email client that you can use to send emails right from the client without exposing your credentials, the free tier has 200 monthly requests, 2 email templates, Requests up to 50Kb, Limited contacts history.
EmailQo Email Infrastructure Grader
Free email infrastructure grader that checks SPF, DKIM, DMARC and mail server configuration. Scores any domain out of 100. No signup required.
Emitlo
free 12,000 emails/month, Email API and SMTP, SPF/DKIM/DMARC support, No Credit Cards are required.
Engage
All-in-one Customer Engagement and Automation Tool (email, push, SMS, product tours, banners and more) for SaaS. Free for up to 1,000 active users per month.
EtherealMail
Ethereal is a fake SMTP service, mainly aimed at Nodemailer and EmailEngine users (but not limited to). It's an entirely free anti-transactional email service where messages never get delivered.
FabForm
Form backend platform for intelligent developers. The free plan allows 250 form submissions per month. Friendly modern GUI. Integrates with Google Sheets, Airtable, Slack, Email, and others.
FakeMailGenerator.com
A German Temporary / Disposable Mail generator. Support 10 domain, while giving you the freedom of creating unlimited addresses. (include ads) but other than that, there is no pricing included in the service, it is entirely free.
Form Plume
Form Plume is a form backend for HTML and JavaScript forms. One endpoint gets you spam filtering, email notifications, file uploads, webhooks, and a clean inbox. Free for 500 submissions/mo.
Form-Data
No-code forms backend. Spam filter, email notification and auto-respond, webhooks, zapier, redirects, AJAX or POST, and more. The free plan offers unlimited forms, 20 submissions/month, and an additional 2000 submissions with Form-Data badge.
formingo.co
Easy HTML forms for static websites. You can start for free without registering an account. The free plan allows 500 monthly submissions and a customizable reply-to email address.
Forminit
Headless form backend for developers. The free plan allows 100 form submissions per month including file uploads, server-side field validation, email notifications, spam protection and Zapier.
FormKeep.com
Unlimited forms with 50 monthly submissions, spam protection, email notification, and a drag-and-drop designer that can export HTML. Additional features include custom field rules, teams, and integrations to Google Sheets, Slack, ActiveCampaign, and Zapier.
formlets.com
Online forms, unlimited single page forms/month, 100 submissions/month, email notifications
FormNX
Create unlimited forms get unlimited submissions free of cost. Use professionally created 1000+ form templates or create forms from scratch. Get features like email notifications, form logic, collect payments, file upload, custom thank you page, and many more.
formspark.io
Form to Email service, free plan allows unlimited forms, 250 submissions per month, support by Customer assistance team.
Formspree.io
Send email using an HTTP POST request. The free tier limits to 50 submissions per form per month.
forwardemail.net
Free email forwarding for custom domains. Create and forward an unlimited amount of email addresses with your domain name
HelioHost
Non-profit free web hosting with Plesk control panel, PHP, Node.js, Python, Django, Flask, .NET, Perl, CGI, MySQL, PostgreSQL, SQLite, IMAP/POP3/SMTP email, unlimited bandwidth, free subdomains, 1000 MB storage for free with the option to upgrade.
HeroTofu.com
Forms backend with bot detection and encrypted archive. Forward submissions via UI to email, Slack, or Zapier. Use your own front end. No server code is required. The free plan gives unlimited forms and 100 submissions per month.
Imitate Email
Sandbox Email Server for testing email functionality across build/qa and ci/cd. Free accounts get 15 emails a day forever.
Inboxes App
Create up to 3 temporary emails a day, then delete them when you're done from within a handy Chrome extension. Perfect for testing signup flows.
inboxkitten.com
Free temporary/disposable email inbox, with up to 3-day email auto-deletes. Open source and can be self-hosted.
IntoDNS.ai
DNS and email security analyzer that checks SPF, DKIM, DMARC, DNSSEC, BIMI, MTA-STS, and 40+ blacklists with AI-powered explanations and fix suggestions. 100% free, no signup required.
KaiMail
Email forwarding for custom domains with ARC/DKIM signing. Free plan includes 1 domain, 1 mailbox, 300 emails/month, and up to 1MB message size. Email receiving webhook also available. Special plans for open-source projects.
knock.app
Notifications infrastructure for developers. Send to multiple channels like in-app, email, SMS, Slack, and push with a single API call. The free plan includes 10,000 messages/mo.
Knocket
Free-forever contact layer for indie developers and small teams: live chat widget for websites and mobile apps (iOS/Android/Flutter/React Native via WebView), a shareable contact page (Linktree-style with socials, booking links, and blog), and a unified Telegram/email inbox. Reply from Telegram directly (no dashboard needed). Meeting scheduler, multi-language, light/dark themes. Companion open-source AI auto-reply agent. No ads, no seat limits.
Mail7.io
Free Temp Email Addresses for QA Developers. Create email addresses instantly using Web Interface or API.
mailboxlayer.com
Email validation and verification JSON API for developers. 1,000 free API requests/month
MailboxValidator
Email verification service using real mail server connection to confirm valid email. The free API plan has 100 verifications per month.
mailchannels.com
Email API with REST API and SMTP integrations, free for upto 3,000 emails/month.
Mailcheck.ai
Prevent users to sign up with temporary email addresses, 120 requests/hour
Maildroppa
Up to 100 subscribers and unlimited emails as well as automations for free.
Maileroo
SMTP relay and email API for developers. 5,000 emails per month, unlimited domains, free email verification, blacklist monitoring, mail tester and more.
mailsac.com
Free API for temporary email testing, free public email hosting, outbound capture, email-to-slack/websocket/webhook
mailtrap.io
Fake SMTP server for development, free plan with 1 inbox, 50 messages, no team member, 2 emails/second, no forward rules
Momentary Email
Free Temporary Email Addresses. Read incoming emails on the website or by RSS feed.
Mutant Mail
Free 10 Email IDs, 1 Domain, 1 Mailbox. Single Mailbox for All Email IDs.
newreleases.io
Receive notifications on email, Slack, Telegram, Discord, and custom webhooks for new releases from GitHub, GitLab, Bitbucket, Python PyPI, Java Maven, Node.js NPM, Node.js Yarn, Ruby Gems, PHP Packagist, .NET NuGet, Rust Cargo and Docker Hub.
Novu.co
The open-source notification infrastructure for developers. Simple components and APIs for managing all communication channels in one place: Email, SMS, Direct, In-App and Push. The free plan includes 30,000 notifications/month with 90 days of retention.
OnlineOrNot.com
OnlineOrNot provides uptime monitoring for websites and APIs, monitoring for cron jobs and scheduled tasks. Also provides status pages. The first five checks with a 3-minute interval are free. The free tier sends alerts via Slack, Discord, and Email.
Orbisearch
Free bulk email validator, 100 validations per day, no signup required.
pageradar.io
Monitor Core Web Vitals, SEO changes, and uptime for your websites. Free plan includes 5 URLs, daily Core Web Vitals monitoring, 10 HTML/SEO change monitors, 167-country affiliate link monitoring, and email alerts.
pawnmail.com
2 GB free email hosting across unlimited users for custom domain. Roundcube webmail, POP3, IMAP and SMTP access. No paid plans or upgrades
pepipost.com
Unlimited emails free for first three months, then first 25,000 emails/month free
pingbreak.com
Modern uptime monitoring service. Check unlimited URLs and get downtime notifications via Discord, Slack, or email.
Pingram.io
Communication infrastructure in 5 minutes. Free tier includes: 100 SMS and calls, 3000 Emails, Push, Slack, MS Teams, WhatsApp, and more.
PropelAuth
A Sell to companies of any size immediately with a few lines of code, free up to 200 users and 10k Transactional Emails (with a watermark branding: "Powered by PropelAuth").
Protectumus
Free website security check, site antivirus, and server firewall (WAF) for PHP. Email notifications for registered users in the free tier.
Proton Mail
Free secure email account service provider with built-in end-to-end encryption. Free 1GB storage.
Proton Pass
Password manager with built-in email aliases, 2FA authenticator, sharing and passkeys. Available on web, browser extension, and mobile app and desktop.
Pulsetic
10 monitors, 6 Months of historical Uptime/Logs, unlimited status pages, and custom domains included! For infinite time and unlimited email alerts for free. You don't need a credit card.
Queuemail.dev
Reliable email delivery API. Free tier (10,000 emails/per month). Send asynchronously. Use several SMTP servers. Blocklists, Logging, Tracking, Webhooks, and more.
QuickEmailVerification
Verify 100 emails daily for free on a free tier along with other free APIs like DEA Detector, DNS Lookup, SPF Detector, and more.
Resend
Transactional emails API for developers. 3,000 emails/month, 100 emails/day free, one custom domain.
restspace.io
Configure a server with services for auth, data, files, email API, templates, and more, then compose into pipelines and transform data.
RoboMiri.com
RoboMiri is a stable uptime monitor that offers a wide range of monitors: cronjob, keyword, website, port, ping. Twenty-five uptime checks with 3-minute interval checks for free. Alerts via Phone Call, SMS, Email, and Webhooks.
SendBridge Mail Tester
Free email deliverability test with no signup. Generates a unique inbox address, then analyzes SPF, DKIM, DMARC, Rspamd spam score, 23+ RBL blacklists, reverse DNS, and content quality. Unlimited tests, results in seconds, shareable report pages.
SendStreak
Email framework as a service, that adds templates, automations, history, etc to your own SMTP server (E.g. AWS, Maileroo, Gmail). Free up to 100 emails/day, no time limit.
SimpleLogin
Open source, self-hostable email alias/forwarding solution. Free 10 Aliases, unlimited bandwidth, unlimited reply/send. Free for educational staff (student, researcher, etc.).
smartforms.dev
Powerful and easy form backend for your website, forever free plan allows 50 submissions per month, 250MB file storage, Zapier integration, CSV/JSON export, custom redirect, custom response page, Telegram & Slack bot, single email notifications.
staticforms.xyz
Integrate HTML forms easily without any server-side code for free. After the user submits the form, an email with the form content will be sent to your registered address.
Survicate
Pull feedback from all sources and send follow-up surveys with one tool. Automatically analyze feedback and extract insights with AI. Free email, website, in-product or mobile surveys, AI survey creator, and 25 monthly responses.
Takeout
A constantly updated email service that makes sending emails easy. Five hundred transactional emails/month free.
Tally.so
99% of all the features are free. The free tier lets you have: unlimited forms, unlimited submissions, email notifications, form logic, collect payments, file upload, custom thank you page, and many more.
temp-mail.io
Free disposable temporary email service with multiple emails at once and forwarding
Temp-Mail.org
Temporary / Disposable Mail Gen Utilizing a range variety of domain. Email Address refreshes everytime, the page is reloaded. It is entirely free and does not include any pricing for their services.
TempMailDetector.com
Verify up to 200 emails a month for free and see if an email is temporary or not.
trashmail.com
Free disposable email addresses with forwarding and automatic address expiration
Tuta
Free secure email account service provider with built-in end-to-end encryption, no ads, no tracking. Free 1GB storage, one calendar (Tuta also have an.). Tuta is also partially, so you can self-host.
UptimeObserver.com
Get 20 uptime monitors with 5-minute intervals and a customizable status page-even for commercial use. Enjoy unlimited, real-time notifications via email and Telegram. No credit card needed to get started.
Verifalia
Real-time email verification API with mailbox confirmation and disposable email address detector; 25 free email verifications/day.
Waitlio
Waitlist management software for product launches. Create branded waitlist pages, collect and verify email subscribers, manage signups with tags and analytics. Free plan includes 100 subscribers/month, 1 waitlist, and API access.
webhook.site
Verify webhooks, outbound HTTP requests, or emails with a custom URL. A temporary URL and email address are always free.
webhookbeam.com
Set up webhooks and monitor them via push notifications and emails.
WorkOS
Free user management and authentication for up to 1 Million MAUs. Support email + password, social auth, Magic Auth, MFA, and more.
Zulip
Real-time chat with a unique email-like threading model. The free plan includes 10,000 messages of search history and File storage up to 5 GB. also, it provides a self-hostable open-source version.