As of the 01/24/2018 we no longer support Pinterest services.
Pinterest informed us that they no longer consider themselves a social network and do not wish for their platform to be a place for marketers and publishers to distribute their content.
Instead, they want their platform to deliver a rich, personal experience for their users, enabling them to easily curate and source useful content related to their interests. You can read more about their mission here.
We are now working closely with Pinterest to improve the Sendible experience so that it more closely resembles the experience you would find on Pinterest.
In the meantime, we have set up a partnership with Tailwind which still provides the option to post to Pinterest. Please sign up for a free trial here.