sSMTP!

You will need version 4 or higher of `firefox` https://www.mozilla.org/firefox
to run Pencil as a Firefox Extension. Linux users will need version 4 or higher of either `firefox`, `iceweasel` or `xulrunner` https://developer.mozilla.org/en-US/docs/Mozilla/Projects/XULRunner,
or version 25 or higher of `palemoon` https://www.palemoon.org/.
The Windows installer and OS X archive has everything you need built-in. Windows, Linux, OS X & Firefox Packages are available for download from the Releases Page https://github.com/prikhi/pencil/releases.
You can also install the Firefox Add-on from the Mozilla Add-on Repository https://addons.mozilla.org/en-US/firefox/addon/pencil-prototyping/.
To install the OS X package, unzip the archive and copy the `Pencil.app` folder t

sSMTP alternatives

  • Courier-MTA

  • The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, webmail, and mailing list services within a single, consistent, framework. Individual components can be customized, enabled or disabled at will.

    tags: imap smtp mail-server mailing-list mail-filter
  • OpenSMTPD

  • OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with some additional standard extensions. It allows ordinary machines to exchange e-mails with other systems speaking the SMTP protocol.

    tags: smtp smtp-server
  • Sendmail

  • Sendmail is a general purpose internetwork email routing facility that supports many kinds of transfer and delivery methods, including the Simple Mail Transfer Protocol (SMTP) used for email transport over the Internet. A descendant of the delivermail program written by Eric Allman, Sendmail is a well-known project of the free and open source software and Unix communities, and has spread both as free software and proprietary software.

    tags: mail-server
  • Dragonfly Mail Agent

  • A small Mail Transport Agent (MTA), designed for home and office use. Part of DragonFly BSD , it accepts mails from locally installed Mail User Agents (MUA) and delivers the mails either locally or to a remote destination. Remote delivery includes several features like TLS/SSL support and SMTP authentication. dma is not intended as a replacement for real, big MTAs like Sendmail or Postfix. Consequently, dma does not listen on port 25 for incoming connections. »

    tags: smtp email-transfer message-transfer-agent
  • msmtp

  • In the default mode, it transmits a mail to an SMTP server (for example at a free mail provider) which takes care of further delivery.To use this program with your mail user agent (MUA), create a configuration file with your mail account(s) and tell your MUA to call msmtp instead of /usr/sbin/sendmail.

    tags: mta network-utility network-xfce smtp
  • Microsoft SMTP Server

  • Available in Windows and Windows Server via the optional IIS role.

    tags: email-via-smtp exchange mail-smtp mta outbound-smtp
  • sendEmail

  • sendEmail is a lightweight, command line SMTP email client. If you have the need to send email from a command line, this free program is perfect: simple to use and feature rich. It was designed to be used in bash scripts, batch files, Perl programs and web sites, but is quite adaptable and will likely meet your requirements. SendEmail is written in Perl and is unique in that it requires NO MODULES. It has an intuitive and flexible set of command-line options, making it very easy to learn and use. »

    tags: command-line-interface mailer scripting smtp
  • Hectane

  • An SMTP client that is extremely easy to configure and use, providing a simple HTTP API that is used for sending emails.

    tags: smtp outbound-smtp
  • CMail

  • CMail is a command line mailer, originally developed for testing mail server software, but is simple enough to use interactively. CMail supports IPv6, TLS/SSL, authentication, multiple message body and attachment encoding methods, and mail delivery via proxies.

    tags: base64 cgi command-line-interface ipv6-support mailer
  • BulkMTA

  • BulkMTA is Commercial Mail Server Similar to PowerMTA.IP Rotation, DKIM, Sender / Receiver Rate limiting

    tags: mail-server mailing-list mailer