Email marketing in India is not illegal as there is no specific law stating it Illegal, so that will not be a problem.
Spam legislation is non-existent in India. It was held that in the absence of statutory protection to check spam mails on Internet, the traditional tort law principles of trespass to goods as well as law of nuisance would have to be used.
India has no laws governing marketing through email or fax.
The IT Act does not cover electronic marketing.
Email marketing is the act of sending a commercial message, typically to a group of people, using email.
In its broadest sense, every email sent to a potential or current customer could be considered email marketing. It involves using email to send advertisements, request business, or solicit sales or donations.
About Email Marketing
Email marketing is when you send a commercial email message to your ’email subscribers’ contacts who have signed up to your email list and given express permission to receive email communications from you.
A targeted email marketing strategy keeps prospects and customers up-to-date on the latest information related to your business. Email is also action-oriented, measurable, and adaptable. Whether your email message is crafted to educate or share valuable information, it’s important to include a call-to-action.
Reference: The Information Technology Act, 2000 (also known as ITA-2000, or the IT Act) is an Act of the Indian Parliament (No 21 of 2000) notified on 17 October 2000. It is the primary law in India dealing with cybercrime and electronic commerce.