"Email me at" or "reply to this email"?

The situation:

I'm emailing new customers with some general info they need to set up their account. Usually, this information is more than enough. But, there's a possibility that they might have some questions left. So, I want to be polite and at the end of the letter, I suggest they email me if they have any questions.

The question:

Is it ok to say, the following:

For any questions, please consult our Help Desk – or email me at email@example.

Considering, that the email I give in the sentence above is the same I send my letter from.

Or is it better to say:

For any questions, please consult our Help Desk – or reply to this email.