Hi @SasikalaParuchuri , I don't understand why we will need appendall here. But if the appended image need resize, extra memory will be needed because it need to allocate additional canvas for resizing. For avoiding the crash, I would suggest that we should set a queue in compose. Only one image should be allowed for resizing at a time. If composer is resizing, following attachment appending task should put into queue. Once the resizing finished, pop the task from queue and execute.