You can reply to the original email again with the same information (don't modify anything!) whenever as many times as you want, BUT I suggest you send one or two more at most and then just be patient to wait unless it's been a month you didn't yet get the response. And please also make sure you didn't ever create a PR portal account before by yourself for some reason, if you did but just forget the password then you can reset your password there and then log into your portal, your profile might probably be there already.After 1st portal email, i replied but not received portal credentials yet.What should I write in follow up email ? Should I send the same email content or modify the tittle/ content? What is the best time to send email?