In the search and analysis services by E-mail,"email_request_id", a new option to request Request ID notifying mail started.
    Services: FASTA, BLAST, SSEARCH, S&W SEARCH, ClustalW
     Example (request): email_request_id 1
When the request of the Request ID notifying mail is specified in this option, request ID for user's submitted query is sent by e-mail,and the user can confirm the Internet congestion at Traffic information page on Search and Analysis using this ID.
When request ID notification is not selected, an e-mail to notify request ID is not sent to the user. For ClustalW, Request ID had been notified to all users without specifying any options so far.
But, hereafter, if you would like to be notified request ID for your query, you need to specify "email_request_id" option like another homology services.