Alternatives to Dead Simple Email
Compare Dead Simple Email alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Dead Simple Email in 2026. Compare features, ratings, user reviews, pricing, and more from Dead Simple Email competitors and alternatives in order to make an informed decision for your business.
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InboxAlly
InboxAlly
We engage with your emails to teach inbox providers not to send your emails to spam. Our clients have seen their open rates more than DOUBLE within 1-2 weeks! Highly engaged recipients not only open emails, but scroll down as they read. So long as the content is longer than the page, this should be done for nearly all opened emails. When a recipient goes out of their way to take an email out of spam, they are telling the inbox provider, hey, you made a mistake. Moving an email from the promotions folder to the primary inbox tells inbox providers that you disagree with their sorting criteria and it and similar emails should go to the primary inbox. Demonstrates that recipient is interested in the content of your email. We have a set of random generic replies we use for this. Marking an email as important can essentially be interpreted by the inbox provider as "This email is extremely valuable, never send it to spam." -
2
Nuntly
Nuntly
Nuntly is a developer-first transactional email platform. It provides a REST API to send, receive, and reply to emails, with named inboxes, thread grouping, real-time webhooks, and a native inbox for AI agents. Email data stays in the EU. Free plan with 3,000 emails/month, no credit card required. -
3
OpenMail
OpenMail
OpenMail gives AI agents a dedicated email address. Provision an inbox with one CLI command or API call, each agent gets its own address, not a shared inbox or forwarding alias. Inbound email arrives instantly via webhook or WebSocket, parsed and threaded, with no polling required. Replies land in context so agents can respond without any new interface on the human side. Attachments: PDFs, CSVs, images, spreadsheets, Word documents are automatically converted to LLM-ready text; the agent never touches raw MIME. The API is small by design: one call to provision, standard calls to send, webhooks or WebSocket to receive. Integrates with LangChain, n8n, Make, Vercel AI SDK, and OpenClaw. Custom domains supported. Runs in the EU, GDPR-covered, 99.9% uptime SLA, SOC 2 in progress.Starting Price: 9 EUR -
4
Sendmux
Sendmux
Sendmux gives AI agents their own inbox and a controlled way to send email. Each agent can receive messages, read threads, handle attachments, send replies, and react to new mail through signed webhooks or Server-Sent Events. Teams can send through Gmail OAuth, Outlook OAuth, SMTP providers, or managed Amazon SES. Sendmux can spread sending across providers with weighted routing, sender-domain routing, health checks, failover, and quotas by second, minute, hour, or day. Developers get Mailbox, Sending, and Management APIs, OpenAPI docs, SDKs, the sendmux CLI, MCP tools, and Sendmux Skills. The platform also covers tenant isolation, mailbox-scoped API keys, custom domains, logs, metrics, and usage-based pricing with no per-seat or per-mailbox fees.Starting Price: $0.15 per 1000 emails -
5
AgentMail
AgentMail
AgentMail is an API-first email platform designed to give artificial intelligence agents their own fully functional email inboxes, enabling them to communicate, send messages, and participate in email conversations autonomously. Instead of building on traditional email providers created for human users, it provides programmatic inboxes that can be created and managed directly through an API, allowing developers to assign email identities to AI agents in the same way a human would have a Gmail or Outlook account. Each agent receives its own inbox and email address, which can send, receive, and reply to messages while maintaining threaded conversations and persistent message history. It enables AI agents to read and interpret incoming emails, extract structured information from messages, and automatically generate responses or trigger workflows based on the content of the conversation.Starting Price: $20 per month -
6
WillItInbox
WillItInbox
WillItInbox is an email deliverability and validation platform for SaaS teams, developers, agencies, marketers, and newsletter operators that depend on outbound email. Teams can generate a unique test inbox, send a real message from their app or ESP, and receive a practical deliverability report across SPF, DKIM, DMARC, BIMI, DNS, reverse DNS, blocklists, TLS, headers, content, links, reputation, and sender infrastructure. WillItInbox also validates individual emails and bulk CSV lists using syntax, DNS/MX, disposable, role, typo, provider, catch-all, SMTP, suppression, and confidence signals. It includes domain monitoring, DMARC report analysis, sending source visibility, provider reputation checks, API keys, webhooks, scheduled checks, incident diagnostics, inbox placement checks, team workspaces, and exportable reports. Paid plans start at $39/month. PAYG credits are available for extra email validation and deliverability testing usage.Starting Price: $39/month -
7
ClearMyInbox
Clear My Inbox LTD
ClearMyInbox is a bulk unsubscribe tool for Gmail, Outlook, Yahoo, Proton, Fastmail, Zoho and any IMAP mailbox. It scans your inbox, groups every newsletter and marketing sender it finds, and lets you unsubscribe individually or in bulk from one screen, then delete the backlog those senders left behind. What sets it apart is verification: 30 days after each unsubscribe, ClearMyInbox re-checks that sender and tells you whether they genuinely stopped or are still emailing, so you can see which unsubscribe links actually worked. Your inbox data is never sold, shared or monetised. Run by a UK company, ICO-registered, with access tokens encrypted at rest and an independent CASA Tier 2 security assessment. Free to start: three scans a month with manual unsubscribe. Pro adds unlimited scans, a full year of history, up to five mailboxes, one-click and bulk auto-unsubscribe, scheduled weekly scans and analytics.Starting Price: Free; Pro from £4.99/month -
8
Respondo
Respondo
Most SaaS teams at growth stage assemble customer support from multiple tools: a helpdesk for the inbox, an email platform for campaigns, a separate knowledge base. Each tool has its own plan, its own data, its own interface. The result: $600–800/month for a stack that doesn't talk to itself properly. Respondo consolidates all of it. Unified inbox, AI responses on inbound, outbound via email, WhatsApp, Telegram, and in-app, hosted knowledge base — one product, one plan. The key difference from AI bots: AI and agents work in the same workspace. When the bot passes a conversation to a human, the agent has full context — no 'start over' moment for the customer. Copilot suggests draft replies directly in the inbox. AI resolves 70%+ of incoming requests without the team. The remaining 30% are handled by agents 3x faster with AI suggestions. Unlimited seats on every plan — team grows without the invoice growing.Starting Price: $99/month -
9
InboxWarm
OutReachBin
Positive interactions with your emails help increase your sender's reputation. We move spam emails to inbox and reply to emails to help your sender reputation increase, remain high, and ensure inbox delivery every time. Running OutreachBin email warmup daily will help ensure your emails always reach the inbox. Keeping this activity ongoing along with your normal email sending ensures the best results long term. We help you reach human-like activity on automation. Moving your sent emails from receivers' spam to inbox, replying back to emails, and interacting with them as well. All these actions work to give you the best results. If you want to ensure your emails land in your recipient's inbox, then warmup is the most crucial step. If your emails are currently landing in spam, promotions, or another folder, then warmup will help you increase your reputation over time. It will help you increase your domain reputation even for a new email and domain, or an existing one.Starting Price: $19.97 per month -
10
Winnr
Winnr
Winnr is a cold email infrastructure platform that runs the full sending stack in one place. Teams register outreach domains inside the dashboard, generate SMTP mailboxes that come with DKIM, SPF, and DMARC records already published, and enroll them in automated warmup. A shared inbox aggregates replies across every mailbox, and credentials export in one click to sequencers such as Smartlead or Instantly. Agencies and resellers can provision infrastructure programmatically through the REST API and webhooks. Continuous deliverability monitoring surfaces DNS drift and blacklist issues before they affect campaigns. Compared with running dozens of Google Workspace inboxes, Winnr cuts cost dramatically and reduces setup from days to minutes.Starting Price: $69/month -
11
WarmInbox
Offpista LTD
WarmInbox helps individuals and teams improve email deliverability by simulating real, human-like interactions—sending, opening, replying, clicking, and threading—to gradually build sender reputation and avoid spam folders. Designed for marketers, founders, sales teams, and agencies, WarmInbox runs automatically in the background, warming up each email account with trusted, natural-looking activity. Key Features: - Automated email warm-up, Monday through Friday - Realistic activity: opens, clicks, replies, and threads - Live dashboard to monitor deliverability health and inbox placement - Support for multiple inboxes and team members - Invite teammates and manage everything from one central dashboard - Secure setup using app passwords or OAuth - Pause or remove campaigns anytime - Transparent pricing with per-seat billing Whether you're warming a new domain or trying to fix poor deliverability, WarmInbox ensures your emails land where they should—the inbox.Starting Price: $15/month -
12
Snoooz
Snoooz
Snoooz is an AI-powered email assistant designed to save businesses time and improve communication. It automatically drafts and sends personalized auto-replies, categorizes incoming emails, and routes them intelligently based on urgency, context and sentiment. Small businesses, agencies, and working professionals from over 60 countries rely on Snoooz to keep their inboxes organized, leads engaged, and customers happy even when they’re unavailable. Snoooz is easy to use, and integrates effortlessly with Gmail, Office 365, and custom email providers via SMTP/IMAP protocols.Starting Price: $9 per month -
13
SimpleLogin
Proton AG
With email aliases, you can be anonymous online and protect your inbox against spam and phishing. Open-source. Made and hosted in Europe. Next time a website asks for your email address, give an alias instead of your real email. Emails sent to an alias are forwarded to your inbox without the sender knowing anything. Just hit "reply" if you want to reply to a forwarded email, the reply is sent from your alias and your real email stays hidden. You can also easily send emails from your alias. Quickly create an alias on the go. Sign up for a newsletter, and create a new online account with a click. Built upon open-source technology, all SimpleLogin components are also open-source. Not only can an alias receive emails, but it can also send emails. An alias is a full-fledged email address. Manage your aliases on the SimpleLogin website or on our Chrome, Firefox, and Safari extensions. Or on your phone with Android (Play Store, F-Droid) and iOS apps.Starting Price: $4 per month -
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MailReach
MailReach
Track how your reputation is doing, and maximize and maintain it over time to get the best email results. Get reports to fix your deliverability, enjoy a better inbox placement and stay away from spam. MailReach uses your email address to automatically start email conversations with thousands of high-reputation inboxes. The warm-up emails sent are human, and natural and make sense to build trust. No gibberish content that can harm your reputation. The ramp-up is automated and done gradually following smart rules to maximize the efficiency of the email warm-up. Your warming emails get opened, replied positively, marked as important, and removed from spam and categories. All this positive email engagement increases your email reputation and deliverability. It teaches the inbox providers to send your emails to the main inbox and not to spam.Starting Price: $25 per month -
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Inbox.eu
Inbox.eu
Inbox.eu is a privacy-focused email and cloud storage service designed to provide individuals and businesses with secure communication and file management in a single online platform. It offers personal and domain-based email accounts that include large mailboxes, built-in file storage, and tools for sending and sharing large files without the limitations common in many traditional email services. Users can access their inbox from desktop computers, laptops, tablets, or mobile devices through a web interface or standard email protocols such as IMAP, POP3, and SMTP, allowing them to use their preferred email applications. It includes strong privacy and security features such as message encryption, SSL-secured connections, two-step verification, and strict policies that state user data is not shared with advertisers or third parties. -
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PrimaryHub
Voltic
PrimaryHub is a cold email and inbox warmup platform built for agencies and outbound sales teams. It helps users run cold email campaigns, warm up unlimited inboxes, monitor deliverability in real time, and manage replies from one master inbox. PrimaryHub also supports AI reply categorization, client workspaces, inbox rotation, DNS and blacklist monitoring, and campaign management tools to help teams improve outbound email performance and manage outreach more efficiently.Starting Price: $37/month -
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Mutant Mail
Fresent
Never miss an important email again! Manage all your email IDs in one inbox with our Email Router. Struggling with multiple Emails? Overcome the headache of managing multiple Email ids with our privacy-focused, server-side solution Mutant Mail. Problem: Imagine having 5 domains, with 5 Email IDs each (admin, support, help, legal, contact). That's 25 Email IDs. Do we want to log in to every mailbox to keep the domain persona? Answer: Receive, Reply & Send all Emails for your Domains from your free Gmail account(or any Email account) and save on Email Hosting. Skip the Email client setup headache! Forget about Credentials, SMTP, IMAP/POP for every Email id with Mutant Mail. With Mutant Mail service you can receive, send and reply all using one mailbox. Spoof-proof your Emails with complimentary DMARC Report. PGP/GPG encryption. Buffer / Batch your emails.Starting Price: $2.99 per month -
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SendSeven
SendSeven GmbH
SendSeven is a GDPR-compliant unified messaging and customer engagement platform that connects WhatsApp, SMS, Email, Instagram, Messenger, Live Chat, Telegram, and browser push through one REST API and one shared inbox. Official Meta Business Partner. Core capabilities: • Shared inbox for support & marketing — all channels with assignments, tags, notes • WhatsApp Business API with Coexistence — connect your number without migrating • AI chatbot & Knowledge Base — RAG answers from your content, human handoff • Visual Flow Builder — no-code automation • Campaigns — WhatsApp broadcasts, SMS, email, and browser push • REST API, webhooks, Zapier & n8n — one endpoint, every channel • Analytics and auto-translation (100+ languages) Plans from €49/month; API Only from €9/channel/month. No per-user fees. Unlimited seats and contacts. Free inbound. EU servers (Frankfurt). Made in Germany. EU AI Act ready. 14-day free trial, 100 test messages, no credit card.Starting Price: €9 per channel/month -
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MailSlurp
MailSlurp
Create unlimited private email addresses on demand in code, tests, or online. Send and receive emails and attachments and process emails with HTTP Webhooks, Zapier integrations, and team dashboards. Test user authentication, forgotten password, email verification and more for your application using real email addresses. Use REST API, developer SDKs, and Zapier integrations to receive emails in code, test user sign up flows, and save new contacts and attachments to Google Drive and more. Generate inboxes with custom domains or randomly assigned email addresses. View emails and attachments in code, tests, or using team web apps. Process text messages for real phone numbers using webhooks and REST APIs. Send and receive emails in code or tests using webhooks or waitFor function. Search and match emails. End-to-end test applications using real email addresses.Starting Price: $22.80 per month -
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Archestra
Archestra
Archestra is an open source, self-hosted AI platform for deploying and governing agents across an organization. It provides agentic chat for non-developers, apps and skills, shared projects, a server-side agent runtime, MCP orchestration, permission-aware RAG, LLM and MCP proxies, security guardrails, and observability in one platform. Users sign in with SSO, and every tool call runs under that person’s own identity rather than a shared service account. Projects keep chats, files, scheduled tasks, and instructions together, while agents run in sandboxed containers and can start from schedules, emails, or webhooks. MCP servers run in the organization’s own Kubernetes environment and move through security-reviewed promotion flows with separate credentials and network policies. Knowledge bases can connect Confluence, Jira, drives, and internal documents while preserving source-system ACLs, so users only retrieve content they are already allowed to access.Starting Price: Free -
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LiftInbox
Unique Technologies
LiftInbox is an automated email warmup and deliverability SaaS tool that helps businesses, sales teams, marketers, and digital marketing agencies ensure their emails land in the inbox — not the spam folder. Poor sender reputation is the number one reason emails go to spam. LiftInbox fixes this by simulating real human email engagement and gradually building sender reputation with major email service providers including Gmail, Outlook, Yahoo, and all major SMTP setups. Features include automated warmup sequences, real-time sender reputation monitoring, email deliverability scoring, and an easy-to-use dashboard to track warmup progress. Whether you are launching a new email domain, running cold email outreach campaigns, or recovering a damaged sender reputation, LiftInbox provides a complete email deliverability service to maximize inbox placement. Compatible with Google Workspace, Microsoft 365, Amazon SES, Mailgun, SendGrid, Zoho, and cPanel. Ideal for cold email outreach, newsletters.Starting Price: $8.25/month -
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Extra Thursday
Extra Thursday
Extra Thursday is an AI-powered inbox assistant that connects to your Gmail and Google Calendar (via OAuth) to transform email management into a fast, context-aware, streamlined workflow. It treats your inbox like a database: it can scan thousands of emails in seconds, extract key insights or open loops, surface important threads, and highlight action items, so you don’t have to manually sort, search, or triage messages. Extra Thursday also drafts professional replies (from polite follow-ups to technical responses), auto-generates follow-up emails, and lets you review/edit before sending, dramatically reducing the time you spend writing and replying. With deep-context AI reading and understanding entire conversations, the platform helps manage email overload and makes your inbox actionable, rather than overwhelming. Privacy-wise, emails and calendar data are only fetched on demand per session; Extra Thursday does not store your full inbox or use your content to train its models. -
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InboxDoc
Techarenabg LTD
InboxDoc is an AI-powered invoice processing tool that turns a cluttered email inbox into clean, structured financial data. It connects to Gmail, Outlook, or any IMAP account and automatically scans incoming mail for invoices and receipts, no manual forwarding needed. InboxDoc reads each invoice with AI and extracts vendor name, amount, tax, currency, and date. It flags duplicate invoices before they get paid twice, and flags zero-value invoices caused by scanning or formatting errors. All data exports directly to Excel, pre-sorted into Income and Expense categories, ready for a bookkeeper or existing accounting workflow, eliminating hours of manual data entry. Built for freelancers, bookkeepers, and small business owners handling a steady stream of vendor invoices. Free trial covers the first 5 invoices, no credit card required. Paid plans start at €19/month.Starting Price: 19€ -
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SAGARIS
Sagaris Inc.
SAGARIS is an AI Sales Operator for B2B revenue teams: one system where the CRM, parallel dialer, email inbox, SMS, social outreach (coming soon), an inbound AI receptionist, call coaching and revenue analytics run on a single shared record, instead of five tools that do not talk to each other. Rather than storing activity for a human to act on later, its agents execute against it, writing every interaction back to one timeline. Agent actions run behind graduated autonomy levels, approval gates and an audit trail. SAGARIS publishes its pricing openly at $499 per seat per month.Starting Price: $499 per seat per month -
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SpamBully
SpamBully
Intelligently knows which emails you've received are good and which are spam by using artificial intelligence and server blacklists. Everytime you download your email, SpamBully will make sure good emails make it to your Inbox. Decide who and what makes it into your Inbox. Choose which email addresses, words & phrases, countries, languages, and IP's are allowed or blocked from your Inbox. SpamBully always makes sure people in your address book make it to your Inbox. Get back at spammers by increasing their costs, returning their spam, and reporting them to the servers they came from and the FTC. Email a special password to an unfamiliar sender that they must correctly type in before their email is allowed to your Inbox. Checks Realtime Blackhole Lists for internet domains that are responsible for sending massive amounts of spam and automatically filters them from your Inbox.Starting Price: $29.95 per year -
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HelpSpace
HelpSpace
Simplify Your Customer Support Team. An inbox, multiple inbound channels and flexible self-service sites are only a few of the features why you will love HelpSpace. One Inbox For Your Channels. All messages from your different channels arrive in your inbox so you always stay up-to-date on new tickets. Reply Quickly And Efficiently. Change the status, assign an agent or just instantly reply to a ticket. Self-Service Sites. Setup your content with HelpSpace. Multiple self-service sites in various styles: Blog, HelpCenter, Documentation. Self-Service Articles. Adding links of your Self-Service articles is just a click away. Save time! Unlimited Customers. You can have as many tickets and customers as you like. Multiple Channels. Your inbox can receive messages from up to 5 channels in our Pro plan. Intuitive Interface. The interface is clean, simple, and very easy to use. Get Started In Minutes. We made the onboarding process really easy and straightforwardStarting Price: $5 per user, per month -
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Spam Arrest
Spam Arrest
Before using Spam Arrest, over 90% of our customers tried a spam filter on their inbox, yet spam still got through. Spam Arrest protects your mailbox from 100% of spam with a patented method for verifying relationships between you and your valued contacts, making email safe for everyone. Access your email using your favorite POP3/IMAP-compatible program (such as Outlook or Eudora), or from anywhere using our powerful webmail system. Get a new email address, as well as protect your existing mailboxes. Patented challenge, response technology blocks 100% of automated spam. Webmail allows you to access your email from any web browser, without having to install any additional software. SMTP is a standard protocol used for sending email. When you send email through the Spam Arrest SMTP server or webmail, the person you are sending email to is automatically added to your whitelist, so that they can reply to you without having to complete the verification process. -
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Firefox Relay
Mozilla
Firefox Relay email aliases protect your real email address from public view, automatically forwarding emails to your real inbox. Now you can receive only the emails you want in your inbox. Sign up with your Firefox account to get started. Share Relay email aliases instead of your real email address to protect your email inbox, as well as your identity. As you browse, the Relay icon will appear where sites ask for your email address. Sign in to the Relay dashboard to keep track of the aliases you’ve created. Relay will forward messages to your email address. If an alias gets spam or unwanted messages, you can block all messages or even delete the alias, right from the dashboard.Starting Price: $0.99 per month -
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Migadu
Migadu
Our base offer is standards-oriented email hosting with full support for SMTP, IMAP4, POP3 as well webmail. No proprietary protocols or clients, ever. For all your needs, you get first-hand assistance from real postmasters maintaining the system. We do not outsource our support. We price email based on actual usage, not address space. It's your domain and all addresses on it are at your disposal at no extra cost. Everyone in the tech business plays the advertising card at some point. We've played ours already. No ads here ever, not even our own. Going off-line for a while? Setup a simple auto-responder so people do not expect an immediate answer. As we use standard email protocols, any standard email client with non-obsolete secure communication protocols will work. A copy of once-received messages in your Inbox can be automatically forwarded to your secondary addresses. Up to 25 of them.Starting Price: $9 per month -
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EmailQo
EmailQo
EmailQo is a cold email platform built around inbox placement. Instead of routing your campaigns through shared sending pools, EmailQo connects to your own Gmail, Outlook, Zoho, or Amazon SES account. Your sending reputation belongs entirely to you. Every plan includes automatic email warmup and pre-send inbox health checks before every campaign goes out. Those checks cover SPF, DKIM, and DMARC validation, blacklist monitoring, spam trigger scanning, and enterprise spam filter simulation. Problems get caught before the send, not after open rates drop. AI reply classification sorts incoming responses into interested, not interested, and out of office. Follow-up sequences pause automatically when a reply is detected so no prospect receives a follow-up after they have already responded. Built for founders, sales teams, and agencies who are serious about inbox placement and want full control over their sending infrastructure.Starting Price: $19/month -
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one.email
one.email
one.email is an AI-powered email client designed to streamline your inbox by connecting multiple email accounts and organizing them with smart categorization and powerful search capabilities. It allows users to save hours each week by turning email chaos into clarity, offering features like automatic email classification, unlimited email storage, and a unified calendar. It emphasizes user privacy, ensuring no ads or tracking, and provides premium support. one.email is compatible with IMAP, SMTP, Google/Gmail, and Outlook accounts, making it a versatile solution for managing various email services in one place.Starting Price: $99 one-time payment -
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Interseller
Interseller
Make contact with new candidates. Find email addresses and send automated emails in one platform. Reaching out to candidates shouldn't require a dozen processes and tools. Interseller is a simple solution for all your email needs. Source your own candidates using our Chrome extension or upload a list of contacts to add to an email sequence. Schedule a customized sequence of emails that will be sent to a list of contacts. Emails stop sending automatically once the contact replies. Interseller connects with your Gmail, Outlook, Exchange or IMAP server to send 1 on 1 emails to your contacts so they land directly in their inbox. Connect your CRM or ATS directly to Interseller to keep all your contacts and communication up to date and prevent reaching out to existing contacts.Starting Price: $100 per month -
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Mailsac
Forking Software
Make up any email address @mailsac.com and you can instantly receive mail. No need to create the email first! Everything is public, unless you create an account. It's cheap and easy to setup a unique email address per online service. Route all your Mailsac addresses to a single one that you check. Email validation checks the formatting of an email address and if the email address is associated with a known disposable email address provider. With Mailsac, it is easy to interact with email via REST API, Webhooks and WebSockets. You can reserve and release email addresses, check messages, download attachments, and route mail. Email attachments are not viewable for public addresses from the Website. Attachments must be downloaded using REST API. Attachments on emails sent to Private Addresses can be viewed in the Unified Inbox or in an email client using POP3. -
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TypeApp
TypeApp
Keep your inbox tidy, by having a single entry for those newsletters and machine generated emails. TypeApp will aggregate all emails from those services automatically, with a service name and avatar. When you reply to emails or people reply to you, TypeApp creates conversations with both Sent and Received emails. Extending a conversation to new members will create Linked Conversations granting you full visibility to all emails. With unlimited accounts from all providers and protocols, you can manage all of your emails with TypeApp, and oversee all email activity at a glance. Move easily from Unified Inbox to a specific account, between accounts, and select folders and filters with the Picker. Get instant notifications for your new emails, using your Tablet, Phone or Watch for Android or iOS. Customize quiet hours to match your lifestyle. -
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Afterlogic Aurora
AfterLogic
Groupware system for businesses and providers, backed with mobile apps. Your private cloud combining groupware, file storage and email in a single, unified environment. Clean and modern interface. Can work with your existing mail server or use its own for the complete solution. iOS/Android apps for Email and Files let your users just type their email/password and never deal with mail server settings or blocked IMAP/SMTP ports. Can be integrated with LDAP authentication or LDAP address book, along with OAuth 2.0 authentication and resources, like Google Drive or Dropbox.Starting Price: $99.00/one-time -
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Inbox Zero
Inbox Zero
Inbox Zero has undergone a thorough security process with Google to ensure the protection of your emails. You can even self-host Inbox Zero on your own infrastructure. Don't search for the unsubscribe button. Unsubscribe with a single click or auto-archive emails instead. See who's sending you the most marketing and newsletter emails to prioritize who to unsubscribe from. View analytic charts to see how often you get emails from certain senders to take action. Understanding your inbox is the first step to dealing with it, understand what is filling up your inbox. Then figure out an action plan to deal with it. Our AI agent will reply, forward, or archive emails based on the rules you provide it. Let our AI plan what to do for you, accept or reject in a click. Turn on full automation once you're confident the AI can work on its own.Starting Price: $10 per month -
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Molted
Molted.net
Molted is a managed operating environment for autonomous AI agents. It lets teams deploy, host, monitor, recover, and scale OpenClaw-based agents without building their own cloud, DevOps, integration, and recovery stack. Molted provides agent-ready runtimes with persistent workspaces, browser automation, 1,000+ app integrations, dedicated email and voice per agent, monitoring, automatic recovery, and lifecycle management. Agents can use tools, access websites without APIs, communicate through email/voice/SMS, and keep working continuously. It is built for AI agencies, SaaS builders, OpenClaw consultants, and teams running agent fleets for customer-facing or internal workflows. Molted supports multi-agent management, versioned filesystems, restore points, REST API control, and cloud, on-premise, or sovereign deployments. Molted is not generic hosting; it is the run layer for production AI agents. -
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SMTP Provider
SMTP Provider
Experience the next level Email Marketing at an affordable price. Use a dedicated IP address to increase your sender reputation and avoid blacklisting of your IP due to someone else’s actions. Show that it’s really your own company and domain sending the message, and minimize the amount of messages that are marked spam by using the special cryptographic signatures SPF and DKIM. Our SMTP servers send your emails using secure SSL connection. Moreover, it's lightning fast. For each mailing list, you can discover the amount of messages sent out, the number of conversions made and links clicked, and many other details. Our SMTP service generates sending reports and delivery error reports. All reports can be downloaded to your computer. Your mailings won’t be sent to any addresses on the list of recipients who have unsubscribed, even if they are on a mailing list. Make sure that your emails are delivered to the inbox and not the spam folder. -
39
Newton Mail
CloudMagic
Email app with space-age features for modern-day business communication. Designed to delight, for all your email accounts, on all your devices: iPhone, iPad, Android, Mac & Windows. Read Receipts comes baked in with Newton, with all your sent emails tracked without you having to do anything. Apart from giving you instant gratification, it also makes your follow-ups timely and effective. Recap automatically brings back conversations that are waiting for your reply or that need following up. It also covers other mails with due dates, reminders etc., so that nothing slips through the cracks. Tidy Inbox helps you stay clear of unwanted emails by automatically removing newsletters and other distractions from inbox. Focus on the emails that actually matter and make your inbox distraction-free. Most of us are assigned tasks via email. But some of us like to manage them outside our Inbox. Newton lets you save emails to Todoist, Evernote, OneNote, Trello or Asana in a single click.Starting Price: $49.99 per year -
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InboxGreen
InboxGreen
InboxGreen is a free email deliverability checker that tests SPF, DKIM and DMARC records for any domain instantly, no account required. It shows exactly which DNS records pass, fail, or are missing, and explains what each result means for inbox placement. The platform includes 28 free DNS tools: DMARC analyzer, DMARC policy tester, SPF generator, SPF tester, DKIM generator, DKIM checker, DKIM selector finder, blacklist checker, email header analyzer, MX lookup, TXT lookup, WHOIS lookup, reverse DNS, DNS propagation checker, SMTP port checker, IP address info, and more. For teams that need to fix issues, the FixKit provides step-by-step DNS fix instructions for every problem found. The Monitoring plan watches up to 5 domains and sends alerts the moment SPF, DKIM or DMARC breaks. The Agency plan covers up to 30 domains with white-label PDF reports. Built for developers, marketers, and anyone who sends email and needs it to actually reach the inbox.Starting Price: $19 -
41
Mail Pilot
Mail Pilot
Mail Pilot is a privacy-first email app designed to help users manage email fatigue and declutter their inboxes. With a clean, focused interface, it allows users to prioritize their most important messages while organizing others into a calm, manageable workflow. Mail Pilot supports all standard IMAP email servers and ensures your emails stay on your device, avoiding third-party servers. The app is native to macOS and offers an intuitive task-based approach to handling emails. Users can sort emails into actionable tasks, schedule messages, and archive emails with ease, all while maintaining an emphasis on privacy and simplicity. The app’s streamlined design has received praise for making email management both efficient and visually appealing. Additionally, Mail Pilot provides a secure environment for managing personal and professional correspondence, ensuring that users can control their inboxes without feeling overwhelmed. -
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SupportBee
SupportBee
SupportBee’s support ticket system enables teams to organize, prioritize and collaborate on customer support emails. SupportBee’s shared inbox works just like email. We stay invisible to your customers, retaining the personal touch of email. However, unlike a traditional email inbox, we offer your team a frictionless way to collaborate by assigning tickets to teams and agents. Everyone knows exactly what they are responsible for and nothing slips through the cracks. Our integrated knowledge base software empowers your customers to help themselves. Your customers can find answers to their questions without having to write to customer support. KBee also integrates tightly with our Shared Inbox, which enables your team to easily insert links to relevant customer support articles when replying to your customers.Starting Price: $49 per month -
43
QuoSignal
Bonzali Ltd
QuoSignal is an AI SDR and outbound email automation platform that extracts real intent from inbound replies and turns it into instant, auditable actions. It identifies interest, objections, meeting requests, and other reply‑intent signals using lightweight NLP, then ranks them with a clear confidence score so SDR and RevOps teams know exactly where to focus. QuoSignal filters bot opens and security‑scanner clicks to ensure engagement data is real, and protects domain reputation with bounce‑guard, safe‑send queues, and automated warm‑up. Users can act on signals with one‑click draft replies, tasks, and meeting proposals, all backed by a full audit trail. An inbox‑free demo and skippable onboarding let new users experience value immediately. QuoSignal integrates with Gmail, Outlook, IMAP, CRMs, and calendar systems, providing a fast, safe, and transparent way to manage outbound email and never miss a high‑intent reply again.Starting Price: $39/month -
44
CapsimInbox
Capsim
CapsimInbox is a simulation-based assessment platform that immerses learners in authentic, day-on-the-job situations to accurately evaluate critical skills, all in a familiar and flexible email environment. Each simulation uses a familiar email environment to immerse learners in real-world situations. Administrators can easily deploy and manage simulations from a central dashboard. Learners can access inbox simulations anytime, anywhere, and from any web browser. Story-driven scenarios put learners in the driver's seat as they navigate dynamic, day-on-the-job experiences that mirror the real world. Participants are immersed in a rich and interactive web-based environment, complete with emails, instant messages, videos, attachments, and more. Typical inbox simulations are completed in just 15-60 minutes and are accessible anywhere, anytime. Inbox simulations are validated as one of the best predictors of job performance. -
45
ReplyInbox
ReplyInbox
ReplyInbox is a Gmail chrome extension which revolutionizes your email management by harnessing the power of AI. Simply select the text you want to respond to, click generate, and let ReplyInbox craft a personalized and high quality reply based on your data sources (FAQ pages, blog posts, feature pages, ...).Starting Price: $45/user/month -
46
EmailSuccess
DIENNEA SRL
EmailSuccess is an enterprise-level SMTP Server for high volume email sending. EmailSuccess is an MTA (Mail Transfer Agent) solution for senders of any size: ESPs and Marketing Automation Companies. High Performance EmailSuccess is an MTA designed to deliver high email volumes, giving the business full control over Speed, Latency, Reliability and Deliverability parameters. Deliverability Deliverability is key for the clients to reach their target easily. Ensure that the email has the best chance of avoiding spam filters and landing in the inbox. Advanced Sending Intelligence Optimized delivery by tuning email delivery parameters automatically and in real-time; making platform tuning ever so easy.Starting Price: $0 - $4000 -
47
Zyntra
Zyntra
Zyntra is a disposable email platform for QA teams and test automation workflows. It helps you capture, assert, and validate email content as part of your end-to-end tests — without manual setup or flaky workarounds. Use it to: • Generate unlimited private inboxes automatically, with one line of code • Trigger real emails (OTP, password resets, invites) and read them via API or Web viewer • Prevent test emails from leaking to real users — all inboxes are private by default • Run isolated tests in CI/CD with no collisions or cleanup • Validate your entire email-based flow, just like in production (real SMTP) Zyntra works with any testing framework or language and includes an official Node.js SDK for fast integration. Ephemeral inboxes are retained for 24 hours; persistent ones for at least 7 days. Built by QA, for QA — Zyntra helps you stop babysitting test environments and focus on verifying what matters.Starting Price: $9/10000 emails/month -
48
TeamInbox
Zoho
Team collaboration made easy with shared inboxes. Create common inboxes for your teams and give them the comfort of working in a transparent workspace. Stay informed on what's happening in your team all the time. Connect your team's email addresses to shared inboxes so each conversation is visible to every team member added to that inbox. TeamInbox gives you what you need for smart collaboration, all in one place. Conduct parallel discussions with your team about complex conversation so you can send out precise responses every time. An empty inbox is always satisfying. Assign thread to the person responsible, archive them once you're done replying, snooze threads of less priority, and thus have a cleared space. Since every thread can have an owner and each team member can clearly see who is working on what, your team can avoid doubling up on the same tasks. Save yourself the confusion of switching between multiple applications: channel your conversations to TeamInbox to streamline.Starting Price: $10 per month -
49
Mailchimp Transactional Email (Mandrill)
Mailchimp
Transactional emails: Reach inboxes when it matters most. Deliver fast, personalized transactional emails using API or SMTP. Get the benefits of our experience sending billions of emails globally. Send personalized transactional emails that reach inboxes, not spam folders. Customize your analytics with pre-built dashboards, export API, and more. Read documentation guides, or contact our award-winning Support team for help. Use custom tagging, whitelabeling, conditional content, and more. Globally distributed infrastructure: Featuring automatic SPAM loop registration and pre-warmed dedicated IPs. Get analytics in multiple ways, plus custom tags, A/B test capabilities, and comparative reports. Utilize white-labelled click tracking, custom reverse DNS, rules engine, custom return path, and sub-accounts. That’s the average time to delivery for top 3 ISPs, sent from our MTAs to the recipient’s email server. -
50
AutoSend
AutoSend
AutoSend is a lightweight, cloud-based email delivery platform built to send and track transactional messages (like magic links, verification codes, and confirmations) and marketing campaigns with reliable deliverability and strong inbox placement; it provides a simple RESTful Email API with SDKs for multiple languages, SMTP relay support, and webhooks for event-driven workflows that let developers integrate email into apps quickly and reliably. It also offers tools for reusable templates, contact lists, and segmentation, campaign creation, email automations, real-time logs, deliverability analytics, and engagement tracking so teams can monitor delivery status, opens, clicks, bounces, and suppressions. AutoSend integrates intuitive dashboards that modernize both developer and marketer workflows with features such as migration support from other providers, dynamic suppression lists, personalization, and automation builders, helping organizations streamline email communication.Starting Price: $1 per month