Immediate Boss not accepting resignation mail

Where you are employed? Who is the appointing authority? What are the terms of appointment?

An employee can resign by serving the agreed notice period as per the terms of employment. If your manager is not accepting your resignation and is creating hurdles, you can formally communicate your resignation via email or a written letter, keeping records of all correspondence. The delay tactics may not hold legally if you've followed the resignation protocol outlined in your employment contract.

According to the Indian Contract Act, 1872, once notice is served as per the employment agreement, an employee can choose to leave after the notice period even without formal acceptance of resignation.

If the situation escalates, you may consider approaching labor authorities like the Labor Commissioner’s Office for mediation. Retaining evidence of harassment or unreasonable demands can support your case.

After serving notice period you may stop attending the duty / calls. 

I hope your boss is aware of Bonded Labour Act.

Simply send the resignation letter through offcial email/ registered/ speed post. Keep the postal receipt/ online track report for future reference. 

In the resignation letter clearly mention your intention to serve the notice period as per terms of employment and also mention the last date of your duty. 

Stop attending duty after last date. 

Unless the management refuses in writing to accept your resignation due to a valid resign, such resignation will be deemed to have been accepted. It does not matter whether management confirms acceptance of your resignation in writing or not.