MailDeck

Mailwarm is an automated email warmup and deliverability platform designed to help businesses keep their emails out of spam folders and consistently reach the inbox.

An easy to use email app that saves you time and keeps your messages safe. Get your messages instantly via push notifications, read and respond online & offline, and find any message quickly.

It is an application that is used mainly to send and receive emails. It can also be used to manage various types of personal data including calendar appointments and similar entries, tasks, contacts, and notes.

It is a free and open-source mail transfer agent that routes and delivers electronic mail. It is Wietse Venema's mail server that started life at IBM research as an alternative to the widely-used Sendmail program. Now at Google, Wietse continues to support it.

It is the world's largest secure email service, developed by CERN and MIT scientists. We are open source and protected by Swiss privacy law

It is not just another email client. They are rebuilding the inbox from the ground up to make you brilliant at what you do. Specifically designed it for those of you who want the best.

It is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with security primarily in mind. It is an excellent choice for both small and large installations. It's fast, simple to set up, requires no special administration and it uses very little memory.

It is an open source server and secured & fast customer software for messaging and collaboration. The software consists of both client and server components, and a desktop client. It also provides native two-way sync to many mobile devices.

It is a free feature-rich email service with unlimited mailbox size. It has two-factor authentication and login history to prevent hacking. It scans all incoming mail for both spam, phishing, and malware.

Work smarter with business-class email and calendaring. It helps you collaborate on your critical documents and gives you a focused inbox that prioritizes important messages and adapts to your work style.

It adds scheduled sending and the easiest, most integrated email reminders to Gmail, helping you reach Inbox Zero.

250ok is an email deliverability tools company that produces a Software‐as‐a‐Service (“SaaS”) platform to monitor and measure the deliverability of email networks. These networks consist of companies sending various forms of messages including marketing, transactional, share, and others from various platforms.

Email deserves a dust off. A renovation. Modernized for the way we email today. With HEY, we’ve done just that. It’s a redo, a rethink, a simplified, potent reintroduction of email. A fresh start, the way it should be.

It is a free, open source mail server solution for your favourite Linux/BSD. You can deploy an open source, fully fledged, full-featured mail server in several minutes, for free.

It helps build lasting business relationships, right from your inbox. A sales engagement platform designed for sales professionals and account managers.

Is an AI-driven multichannel outreach platform that reaches prospects where they're most active while keeping every message personal, timely, and effective.

Gmail client built for OSX with Calendar and Gmail support to allow usage in the familiar Gmail environment.

It is an all-in-one tool for email deliverability to make your Email Channel Reliable. It raises your sender reputation by interacting with real people in any language and helps you to hit the inbox of your prospect. Full automation.

It is an API-first email hosting service with a user-friendly interface. It provides affordable scalability for small & large businesses using dedicated email servers without any per-user/per-domain limits. Furthermore, the powerful API enables you to meet your changing business requirements with ease.

Your transactional email should NOT trigger spam or marketing filters. Flute Mail plugs into your existing API provider to properly isolate segments, boost inbox rates, and safely store your transactional email data.

It is a mail transfer agent server that provides ESMTP, IMAP, POP3, SMAP, webmail, and mailing list services with individual components. It is best known for its IMAP server component.

Pinpoint email issues before you hit "send". Secure your emails from malicious actors and ensure your email delivery to the inbox.

Free email checker and email verification with 99.9% accuracy. Reduce bounces, protect sender reputation. 100 free email verification credits daily.

Sidemail is an all-in-one email delivery platform for startups that makes sending emails simple. It has everything for delivering and managing emails – email API, transactional emails, email marketing and automation, contact management, no-code email editor, email templates, subscribe forms, and more. Perfect for teams & developers that want reliable deliverability without the bloat. We're based in the EU and GDPR compliant.

Free email verifier & checker to validate email addresses instantly. Reduce bounces and verify emails in real time.

Get US-IP Google & Microsoft Workspace accounts from $2.5. 95% inbox delivery. Works with SmartLead, Instantly, Lemlist, SalesForge, Warmy & more.

It is an easy way to manage your outgoing emails from your apps. From creating and sending your emails to monitoring and managing their stats, you can do really useful things with it without worried about time zone disaverage.

It offers a simple REST-based JSON API enabling you to thoroughly check and verify email addresses right at the point of entry into your system.

It is a powerful open-source tool designed for Gmail and Gsuite users. It streamlines your email management, helping you achieve 'Inbox Zero' swiftly with features like email analytics, newsletter management, and AI assistance.

It helps new brands and startups build an audience while they focus on building a product

It is the e-security platform that specializes in elegantly easy email encryption for privacy and compliance, impostor protection, and AI-infused services to prevent data leaks and human e-security errors.

Replaces external email with verified, encrypted messaging. No phishing, no spoofing, no spam. Start free today.

SafeTemp.email lets you create free disposable temporary email addresses (temp mail) in seconds. Receive verification emails anonymously, block spam, and protect your real inbox. No signup required.

InboxKit automates your entire cold email infrastructure. Buy domains, provision Google Workspace and Microsoft 365 mailboxes, configure DNS, and export to 16+ sequencers — all from one dashboard. Scale from 10 to 10,000 mailboxes without the manual setup headache.

Get a free disposable email address with Temp Mailin. Instantly receive emails, block spam, and protect your privacy. No registration needed.

Protect your domain with Dmarclytics. Run free DMARC, SPF, and DKIM checks to stop spoofing, enhance email authentication, and improve deliverability with powerful monitoring tools.

Use AI to find prospects that need you, automatically craft personalized cold emails for each, and scale effortlessly

Paste any suspicious email and our AI instantly tells you if it's phishing, spam or a scam. Online email fraud detector - GDPR compliant.

Postigo is an advanced email delivery and outreach platform designed to solve the technical challenges of cold email routing and sender reputation management. For growth engineers, marketing ops, and sales operations teams, maintaining high deliverability while scaling outbound campaigns often requires complex IP warming and constant monitoring of spam trap triggers. Postigo abstracts this complexity by providing out-of-the-box, fully warmed-up SMTP servers paired with an AI-driven content generation engine. By dynamically generating unique, personalized email payloads at scale, Postigo prevents campaigns from being flagged by algorithmic spam filters that detect repetitive content. With an emphasis on reliability and compliance, Postigo fits seamlessly into modern sales and marketing stacks, allowing teams to focus on campaign logic rather than underlying email infrastructure.

Get Unlimited instant disposable email addresses with Mail On Deck. Free temporary mail service protects your inbox from spam. No registration required.

Don't stress over Amazon SES or get banned by SendGrid. Transmit gives you Postmark-level happiness with the power of AWS. Start sending in minutes.

Get a free disposable temporary email address instantly. No signup required. Protect your real inbox from spam, data brokers, and unwanted newsletters.Use It Anywhere Premium Unblocked Domains

Free email deliverability checker for B2B outreach. Validate email addresses instantly, check MX records, detect role-based emails, and improve inbox placement before your cold email campaigns.

Aepto is an AI-powered domain monitoring platform built to give full visibility and control over domains spread across multiple providers. Instead of logging into separate registrar, hosting, and email dashboards, Aepto centralizes everything into one clean interface and continuously monitors domain health using public signals and AI analysis. Once a domain is added, Aepto automatically scans the registrar, hosting setup, email configuration, pricing, and renewal details—no APIs or integrations required. It monitors email deliverability, DNS records, website and subdomain uptime, content changes, and suspicious activity such as nameserver changes or lock status updates. When something goes wrong, Aepto alerts you early and clearly explains what happened and which provider to contact. Aepto also helps track domain expenses, visualize spending, assign ROI, organize domains into folders, and customize pricing and provider details when needed. Advanced features include AI-powered domain discovery, domain watch for tracking expiring domains you don’t own, distributed uptime monitoring, and customizable white-labeled status pages with incidents and maintenance updates. Designed for businesses, agencies, and teams that rely on domains for live websites, email, and APIs, Aepto focuses on proactive monitoring and clarity—so nothing breaks silently and small issues don’t turn into bigger problems.

MetricPoint offers an intelligent AI receptionist for calls, texts, and emails, helping businesses automate scheduling, support, and client engagement 24/7.

Tempemail.cc is a free online service designed to provide users with temporary, disposable email addresses. Its primary function is to protect your primary inbox from spam, marketing emails, and potential privacy risks by acting as a buffer between your real identity and various online services.

Outreach Box is an AI-powered sales engagement, marketing automation and email outreach platform designed to help businesses find warm leads, scale outreach campaigns, and close more deals. With intelligent automation, unlimited email outreach, advanced deliverability, AI-generated personalized solution, and real-time campaign analytics, Outreach Box enables sales and marketing teams, agencies, and marketers to increase business reach and automate daily works for better output.

Ark is the AI first email API. Send transactional emails with native MCP support, sub-second delivery, and 99.9% deliverability.

Email shouldn't cost $4/1K. SES shouldn't take hours to configure. Wraps gives you AWS pricing ($0.10/1K emails) with the SDK and dashboard you actually want. One command deploys everything.

Email Deliverability Solutions (Analytics + Managed Services). We’ve helped 16,000+ companies like TikTok & HSBC land over 30B emails in customer inboxes.