SendBird, a San Francisco area startup, helps developers add messaging to their apps with a couple of lines of code. It’s an idea similar to Stripe for payments or Twilio for communications. Today, the company announced a $52 million Series B investment. The round was led by Iconiq Capital. Existing investors Shasta Ventures, August Capital, Y Combinator, and Funders Club also participated. Today’s investment brings the total raised to over $70 million, according to Crunchbase.