Missinglettr

Missinglettr is an all-in-one social marketing platform that automates the creation and distribution of social media content from existing blog posts and videos. It helps users schedule drip campaigns, curate content, and track performance across various social media channels.

Missinglettr is a strong match for the SmartPost Scheduler concept. It offers multi-platform scheduling, a calendar view for planning, and multi-account management. It also provides content creation tools, specifically mentioning a stock image library and an editor. While it doesn't explicitly state a 'queue view' in addition to the calendar, the calendar functionality seems robust enough to cover planning. The platform supports various social media channels and offers different subscription tiers. There is no explicit mention of a mobile app, which is a 'must-have' for SmartPost Scheduler, nor specific in-app image editing tools beyond a stock library, or GIF search. However, the core functionalities align well.