Is it advisable to have a countdown for a limited free account in a register form?

1. Can you put a countdown in an email?
2. How do you write a countdown post?

Can you put a countdown in an email?

Countdown timers can be inserted into emails in two ways: By creating an HTML timer and adding a code to the email layout. By inserting a GIF image.

How do you write a countdown post?

Your first email should announce what you're counting down to and explain the basics: how long the countdown will be, why subscribers should take action, what action you want them to take, and how they can take that action.