How do most companies communicate advertisements directly to consumers?
Options:
- bus
- la ville
- web page
- email
- carrier pigeon
Let's think carefully first. Step-by-step reasoning process:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Email is an electronic mail that is directly delivered to people's email accounts. Email is a cheap and convenient way to advertise. So the final answer is email.