title: Download the attachments of the mail based on keywords in subject
body: <p>I need to make a node js progame which could download the attachments of the incoming mails. The programe should only download the attachments of the emails with certain given keywords in subject.</p>
  
  <p>example :- If the keyword is 'student' then the incoming email which has the keyword student in its subject should be selected and all the attachments of that email should be downloaded.</p>
  
  <p>I want to know what could be the best tool or way to implement such functionality in nodejs. Is there any API or node module which could make this process simple ? </p>