Suggestion #2
This topic has a couple threads going currently. THS is aware of the issue and has been for years. There has not been any commitment to fix it, or recent comment on it, from THS. We can only assume they are either not willing or not capable of fixing it.
https://forum.trustedhousesitters.com/t/message-to-homeowner-doesnt-get-sent-right-away/6655/13
https://forum.trustedhousesitters.com/t/what-is-up-with-this-inbox/42505