Pick 5-10 accounts per week and focus all of your energy on them. That might look like sending emails Monday and Wednesday, then going multichannel on Friday.
Use email as your hub and other channels as your spokes with your CTA on the other channels pointing back to your email.
The email channel can get flooded; get creative with other channels like Twitter. Vin was able to book a meeting off of a backward jump shot.
Use email to keep threading throughout your sales cycle. One way to do this is through direct mail.