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Code is designed to keep the memory, CPU and disk requirements as low as possible but it is admitted that large mail systems are not intended to be run on low-end machines, and trade-offs are made where higher memory usage would bring indisputable benefits. [13] As such, the design goals for OpenSMTPD are: security, ease of use, and performance.
At one time, the designers of X.400 were expecting it to be the predominant form of email, but this role has been taken by the SMTP-based Internet e-mail. [1] Despite this, it has been widely used within organizations and was a core part of Microsoft Exchange Server until 2006; variants continue to be important in military and aviation contexts.
To allow the server to send external emails, an MTA such as Sendmail, Postfix, or Exim is required. Mail is read either through direct access (shell login) or mailbox protocols like POP and IMAP. Unix-based MTA software largely acts to enhance or replace the respective system's native MTA.
The JSON Meta Application Protocol (JMAP) is a set of related open Internet Standard protocols for handling email.JMAP is implemented using JSON APIs over HTTP and has been developed as an alternative to IMAP/SMTP and proprietary email APIs such as Google's Gmail and Microsoft's MAPI (used by Outlook). [1]
Exim has been deployed in busy environments, often handling thousands of emails per hour efficiently. Exim is designed to deliver email immediately, without queueing. However, its queue processing performance is comparatively poor when queues are large (which happens rarely on typical low-traffic sites but can happen regularly on high-traffic ...
Clean Email is an automated software as a service email management application which identifies and clears junk mail from inboxes. [1] The service uses a subscription business model with a free trial for the first 1,000 emails. [2] [3] and is available on macOS, iOS, Android, and on the web.
Mail-in-a-Box is a free and open-source program for mail server hosting developed by Joshua Tauberer. [1] [2] The software's goal is to enable any user to turn a cloud system into a mail server in a few hours. [3] The tool enables developers to host mail for multiple users and multiple domain names. [4] [5]
Sieve is a programming language that can be used for email filtering. It owes its creation to the CMU Cyrus Project, creators of Cyrus IMAP server. The language is not tied to any particular operating system or mail architecture. It requires the use of RFC-2822–compliant messages, but otherwise generalizes to other systems that meet these ...