LightningMail is a professional-quality application for managing and sending out large mailing lists. Messages can be personalized (both subject and body) for the specific recipient and may contain HTML code and dynamic tags through it's own plug-in system. Both messages and lists can be im- and exported to multiple (file-)formats and can be extended using plug-ins. Text messages can be automatically formatted and any number of attachments may be linked with the message. Sending of the messages works through a built-in SMTP client at high speed. LightningMail is free for lists of up to 100 recipients, the full version supports lists of over 2 billion recipients for just USD 24.95.