I want to handle my emails like I would handle my text files
Usage
# Log in to your email provider. Credentials are stored in your secret store
fsmail login
# Synchronize your emails
fsmail sync
# Send an email by creating a file in ./outbox named after the recipient
cat <<EOF > important-email
---
From: me@example.com
To: lover@example.com
Subject: Missing you
---
Just wanted to let you know xoxo
EOF
# Then sync again to send the message
fsmail sync