After my e-filed return was rejected, I mailed it. How long does it take for the IRS to accept it and notify me so that I can track it

[Mike9241]

unless you used tracking the iRS never notifies a taxpayer that their mailed return was received. 

[rjs]

If you are getting a refund, you should be able to check your refund status using Where's My Refund? on the IRS web site 4 weeks after you mailed your tax return.