Temporary Inbox, which can be used for temporary mail validation, is temporarily unavailable.
That is blockchain technology Image Host, and is built with IPFS APIs provided by many cloud service providers for free. Note that this technique does not guarantee the permanent existence of the file!
Using OneDrive and OLAINDEX Project to build a file sharing platform, there will be some resources to share on it.
Although I am not good enough, there would be no donor, but still need to build, just in case?