When we showed prototypes to venture capitalists, however, they weren’t impressed. We got turned down twenty times. Money was so tight that in 2008, when Erica and I got married, we sold our wedding presents and put the money in the bank. Investors might not have believed in Twilio, but I did, and so did my cofounders. We were not going to give up. We were convinced that we had come up with something that customers would love, in a large market.

