LBE Toolbox for MS Outlook - Send multiple individual e-mails and remove duplicate contacts and appointments.

Link Magic - Repair your e-mail attachments and Links Tab links.

LiSA - Have incoming e-mails announced in a real human voice.

ListMotor - Manage e-mail lists and prepare direct marketing campaigns.

LiteMail - Send customizable e-mail messages to multiple recipients.

LiteMail - Send out multipart messages.

LiteMail - Manage unlimited domains and e-mail addresses, catch all addresses and quotas for each domain.

Lydia Email Agent - Receive an alert when a new e-mail arrives.

M~CS ZipItOut - Compress, move, and decompress automatically attached files from outgoing e-mails.

Mach5 PopMonger - Process multiples inboxes, add senders to lists for future mailing management.