I have used socketlabs.com and sendgrid.com, they are about the same in features and price. Amazon SES is still fairly new and doesn't have all the same feature

I have used socketlabs.com and sendgrid.com, they are about the same in features and price. Amazon SES is still fairly new and doesn't have all the same features, but is much cheaper. If you want to get on the email whitelists you might want to check out returnpath.net or SuretyMail.com