YC also funded Sendblue which does something similar: https://www.ycombinator.com/companies/sendblue https://www.ycombinator.com/companies/sendblue It looks li

YC also funded Sendblue which does something similar: https://www.ycombinator.com/companies/sendblue https://www.ycombinator.com/companies/sendblue It looks like a straightforward ToS violation to me as well. I guess it's another "ask forgiveness, not permission" move.