I don't advise using the database to send spam, but you can send e-mails via the database using:
EXEC msdb.dbo.sp_send_dbmail
...
I'm not sure how this impact your actual database performance (SELECT/INSERT/UPDATE/DELETE) but that is not my call.
http://technet.microsoft.com/en-us/library/ms190307.aspx
sp_send_dbmail [ [ @profile_name = ] 'profile_name' ]
[ , [ @recipients = ] 'recipients [ ; ...n ]' ]
[ , [ @copy_recipients = ] 'copy_recipient [ ; ...n ]' ]
[ , [ @blind_copy_recipients = ] 'blind_copy_recipient [ ; ...n ]' ]
[ , [ @subject = ] 'subject' ]
[ , [ @body = ] 'body' ]
[ , [ @body_format = ] 'body_format' ]
[ , [ @importance = ] 'importance' ]
[ , [ @sensitivity = ] 'sensitivity' ]
[ , [ @file_attachments = ] 'attachment [ ; ...n ]' ]
[ , [ @query = ] 'query' ]
[ , [ @execute_query_database = ] 'execute_query_database' ]
[ , [ @attach_query_result_as_file = ] attach_query_result_as_file ]
[ , [ @query_attachment_filename = ] query_attachment_filename ]
[ , [ @query_result_header = ] query_result_header ]
[ , [ @query_result_width = ] query_result_width ]
[ , [ @query_result_separator = ] 'query_result_separator' ]
[ , [ @exclude_query_output = ] exclude_query_output ]
[ , [ @append_query_error = ] append_query_error ]
[ , [ @query_no_truncate = ] query_no_truncate ]
[ , [ @mailitem_id = ] mailitem_id ] [ OUTPUT ]
I'm not sure how you can alter the .DOC file from SQL, so you might have to run this as a mail merge from Word, using SQl Server as a data source:
http://msdn.microsoft.com/en-us/library/aa140183%28office.10%29.aspx