Under revised instructions issued by the Election Commission of India, Booth Level Officers (BLOs) will visit the residences of such electors and collect the required documents.
People can respond to notices generated from the ECINet software by sending their required documents on WhatsApp to BLOs, the official in the state poll body said.
Under fire over SIR, the poll body announced measures including additional time for filing claims, home visits by officials and help desks for those facing notices for removal from the rolls.
Sapkal said the SIR exercise was being carried out in a planned manner, but the ECI had neither published the list of deleted voters nor provided the relevant data.
The deleted names account for 21.14% of the state's previous voter base; Pune, Thane and Mumbai Suburban report the highest number of uncollectable forms.