A. If the people you are mailing did request to receive your newsletter, then it is acceptable but email addresses in your mailing list should not be more than 400-500 and newsletter duration must be atleast weekly. If we receive complaints of the newsletter bring unsolicited SPAM, we will be forced to terminate your account without refund. Please refer to our Terms of Service & Acceptable Use Policy (http://www.dinsol.com/policies/terms.htm) and UCE / SPAM Policy (http://www.dinsol.com/policies/uce-spam.htm) for more details.