LiteMail
LiteMail is a cold email infrastructure platform built to help teams create, configure, and manage fresh or pre-warmed Google Workspace and Microsoft 365 inboxes for outbound campaigns. It is designed for cold email that converts, giving agencies, SaaS teams, recruiters, and outbound operators a faster way to build deliverability-ready mailbox systems without manually handling complex setup. It supports fresh inboxes, pre-warmed inboxes, pre-warmed domains, bulk email inboxes, cold email infrastructure, and automated mailbox provisioning with US and EU IP options. LiteMail automates essential technical configuration, including DKIM, SPF, and DMARC, helping teams reduce setup errors and prepare domains and inboxes for more reliable sending. Users can quickly purchase and configure mailboxes, manage or transfer domains, export mailboxes to outreach tools, and organize infrastructure from one workflow.
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MailTova
MailTova is a hosted business email service for organizations that want branded mailboxes on their own domains. Administrators can connect domains, create and manage mailboxes, and manage mailbox storage from a web dashboard. Users can read and send messages through browser-based webmail or configure compatible third-party clients using IMAP, SMTP, and POP3. The service includes domain verification and setup guidance for email-authentication records such as SPF, DKIM, DMARC, and MTA-STS. MailTova also documents an API and an MCP server for supported client workflows. It is intended for startups, freelancers, small businesses, agencies, and teams seeking hosted domain email without operating their own mail server.
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500Mail by 500apps
500Mail is an email client software by 500apps that provides secure, encrypted, and ad-free emails service used by small enterprises for accessing emails reliably and world-class data security.
The main USP's of 500Mail include providing world-class data security, accessing any device, and providing unlimited mailboxes.
500Mail has an added feature to add multiple domains in a single interface and facilitate access to unlimited mailboxes for particular domains. With 500Mail filters, users can organize their inbox by applying conditions and actions for the incoming and outgoing emails. Signatures at the end of the emails are added to promote your business.
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Mailu
Mailu is a simple yet full-featured mail server as a set of Docker images. It is free software (both as in free beer & as in free speech), open to suggestions and external contributions. The project aims at providing people with an easily setup, easily maintained and full-featured mail server while not shipping proprietary software nor unrelated features often found in popular groupware.
Main features include:
Standard email server, IMAP and IMAP+, SMTP and Submission with autoconfiguration profiles for clients
Advanced email features, aliases, domain aliases, custom routing
Web access, multiple Webmails and administration interface
User features, aliases, auto-reply, auto-forward, fetched accounts
Admin features, global admins, announcements, per-domain delegation, quotas
Security, enforced TLS, DANE, MTA-STS, Letsencrypt!, outgoing DKIM, anti-virus scanner, Snuffleupagus, block malicious attachments
Antispam, auto-learn, greylisting, DMARC& SPF, anti-spoofing
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