1and1Mail can be used to send newsletters to multiple e-mail accounts. While sending e-mails, it can change your IP address automatically through various proxy servers so that your e-mail accounts are not blacklisted. It can also change e-mail contents and headers to personalize each mail. Random time lags or random sending frequency feature can mimic manual sending.
v3.5 [Dec 11, 2012]
-Random delay between sending each email (Mimic sending emails manually)
-Switch freely between HTML and plain text when editing an email
-Able to sort, adjust column width and position in send reports
-Able to see all customized fields of Address Book in send reports
-Able to export send reports
-Add URLs to solutions when error messages show up
-Add pop-up notification when "SMTP server needs authentication" is unchecked
-Add error codes in send reports for debug purpose
-Auto word wrap in plain text email
-Emails cannot be sent and pop up "Can’t start tast with nil message"
-Length of customized field is not long enough
