"When I offered dozens of companies SendGrid for $100 per month, they all said yes. I raised the price to $300 per month, and they all said yes. $500?—yes. Today, we are working with hundreds of companies, including well-known ones like Foursquare, Gowalla, and GetSatisfaction. When you're selling a solution to a problem and you find that nobody is saying no to your prices, you've found some serious pain. We're building SendGrid to solve a very specific problem that I discovered just by paying attention."
I guess it's time to change...
I'm a customer of sendgrid but I have to admit not a really happy one (the website is shitty, the search is working half of the time, and I have the 20$ plan with heroku which mean that my mails are send about 30min after my request because apparently on shared IP we need to wait...)