<a target="_blank" href="http://sincerely.com/">Sincerely</a>, the mobile gifting startup behind <a target="_blank" href="http://postagramapp.com/">postcard</a> and <a target="_blank" href="https://si
Mobile photo-printing and greeting card startup <a target="_blank" href="https://sincerely.com/">Sincerely</a> wants to encourage users to vote this election season, and to do so, it has partnered wit
<a target="_blank" href="http://sincerely.com/">Sincerely</a>, the startup behind photo and card-printing mobile apps <a target="_blank" href="http://itunes.apple.com/us/app/postagram/id429264904?mt=