Enterprise Mail Server   
http://www.emailarms.com

Enterprise Mail Server is a high-performance SMTP POP3 server program designed for large enterprises and Internet Service Providers where having an ultra fast and reliable mail server is vital. It can be used along with virtually any mailer or email program; it is simple, light-weight, powerful and absolutely bullet-proof. It has a lot of security features and options that allow you to protect the server from DDoS attacks as well as safely block SPAM and spammers. Another great feature is that Enterprise Mail Server can be installed on several computers while the common message queue and user mailboxes can be kept on separate dedicated PCs. This will definitely facilitate email messaging in your organization. The user interface of the program is flexible and can be installed separately from the SMTP and POP3 services. This will give you an ability to manage all your servers from a single PC where only the user interface of Enterprise Mail Server is installed. The SMTP and POP3 services work as NT services therefore they will keep working in the logoff mode. For software debugging and testing purposes, the program has a testing mode you can use to check if your email clients work correctly. After you enable the testing mode, the server will accept your email messages, store them in the queue but will not deliver them to the actual recipients. As a personal solution, it is ideal for laptop PC users who travel a lot and have to use different Internet Service Providers (ISP) on the run. Using Enterprise Mail Server, you will never encounter a sending problem wherever you connect your PC to a network or phone socket. If the program can not deliver your email message directly, it will try to deliver it through SMTP gateway servers. You can maintain an unlimited number of SMTP gateway servers to achieve the best delivery rate. Just add all your SMTP servers you use in different places to the list of gateway servers and the program will always use a correct SMTP server.

1st SMTP Server   
http://www.emailarms.com

1st SMTP Server - a free SMTP relay server- is a simplest, easy to use SMTP mail relay server. It is used for relaying your email messages to its destinations quickly and easily. Whenever you need to send large amounts of email from a mass mailing program like Advanced Emailer You can install several servers like this one on different computers to minimize the load and to increase the speed of sending.

GFI FAXmaker for Exchange/SMTP   
http://www.gfi.com

Fax-enable your network users with GFI FAXmaker, the leading fax server for Exchange Server, Lotus and SMTP/POP3 servers. Without installing additional client software, users can send and receive faxes directly from Outlook or any other email clients. GFI FAXmaker fully integrates with Active Directory, eliminating the need for a separate fax server user database. GFI FAXmaker for Exchange/SMTP features include a multi-line fax server, fax antispam, inbound fax routing, print to fax driver for Windows, support for server-based rendering of Office documents, Word mail merge support, allowing users to create personalized fax mailings, fax management features and more. Other enterprise features include remote user and fax server administration, least cost routing, user configuration profiles, remote viewing of fax server status, Brooktrout and ISDN card support and more. GFI FAXmaker also allows your users to send and receive SMS messages from Outlook. GFI FAXmaker is the most competitively priced fax server on the market: A 25-user version sells for $699 and a 100-user FAXmaker sells for $1999. Register to download a fully functional 60-day evaluation version.

TopMail   
http://www.iipwr.com

TopMail is an email client that lets you send anonymous emails from any email address to any email address. All you need is to be online, you don't need to have an email account. With TopMail you can instantly send out emails that appear to arrive from any email address or name you want. TopMail can also auto detect an SMTP server to send the emails thru making the 'send' process as simple as possible.

SMTPTo   
http://www.ionly.com

Tired of writing and writing similar emails? You don't have to. Let SMTPTo do the stupid work for you. Your time is to valuable, go for the tasks where you're brain is needed or just enjoy your more relaxed life. It does not matter which type of emails you have to write: follow-ups for info requests, prize inquiries, download requests, answers to frequently asked questions, typical additional information requests, just to name a few. You create your standardized answers and from now on, answering boring emails is a pleasure. Even better, your recipients will love how detailed and but incredible fast you are able to answer. Key benefits: - React faster and better by email - Use templates to send standardized emails - Personalize common emails - Stop writing similar messages - Email from any app w/ command line support - Works great with script languages and batch files Unique Features: Attachments: With every email you can send multiple attached files. The path information of the files can be given relative and absolute, including UNC. Command Line: SMTPTo works directly from the windows command line and with every application that supports command line. Easy-to-use: Only the absolute necessary parameters have to be passed, like sender, recipients, subject and message. All other parameters are optional and only need to be passed when you need to change the defaults. HMTL and Text Message: No need to choose. If you send a html message SMTPTo automatically creates the corresponding text message, that your recipients can definately read it. Related Files: The ideal option for full-featured html messages. Send all additional files related, that the recipients don't need to go online to view the message correct. Easily include script files, css or images. No Mail Server Required: The build-in SMTP server connects your recipients' mail server directly. More: Quiet Mode, supports Unicode (UTF-7/UTF-8), Firewall/Proxy (socks4/5), message from file