Hi! as i was working in email marketing company we used to warm up our servers using seeds accounts
this is an application that help you warming up your servers. you simply put your account in this order seperated with :

account:password:proxy:port

and select actions to do, proxy and port can be ignored :).

current supported ISP:

• yahoo
• gmail

current supported actions :
FOR SPAM FOLDER :

• Read - Mark as not spam
• Select - Mark as not spam
• select all - mark as not spam

FOR INBOX FOLDER :

• open - archive
• open - reply -archive
• open - reply
• select - archive
• select all - archive
• Make random actions
• just connect to you account
• star an email
• click on your email body link
• or just connect to your email with no action

You can also delete emails from your seeds accounts

About subjet and thread :

• threads : number of accounts opened in same time
• subject : search for emails contains that subject

In order to this application work you need chrome version 75