
KumoMTA
Postfix
PowerMTA
MailerQ
GreenArrow Engine
Sendmail
Exim
Scriptable and scalable SMTP server and email framework designed for service providers.

Website, pricing, platforms and company facts side by side.
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| Website | halon.io | codegres.org |
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When comparing Halon MTA and Codegres.org, you can also consider the following products.

KumoMTA is the world's first Open-Source MTA designed from the ground-up for large-volume senders. Get a fast, flexible, supported solution.
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Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.
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PowerMTA is an industrial-strength software for high-volume email delivery.
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MailerQ is a high performance Mail Transfer Agent (MTA) designed for delivering large volume email messages at very high speeds.
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GreenArrow Transactional Email provides a flexible and secure SMTP and API email delivery from application or website.
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Sendmail is a general purpose internetwork email routing facility that supports many kinds of...
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