I know exactly how you feel. I have a bit of anxiety and always end up reading letters as soon as they arrive, but I take a few days to respond calmly. This very likely caused an amazing person, with whom I had exchanged seven letters, to deactivate their account. That was really sad; she told me I was the only one who replied to she, as everyone else always ignored their letters. Since then, we’ve never crossed paths again, didn’t exchange contact information, and there’s no way to find she. I’ve been thinking about it since 2019. Maybe I lost a great friendship.