- Disable Mail within Plesk (if necessary)
- Change admin email addresses
- Generate new admin password and store in 1Password
- Clear any test data
- Enable SSL on sensitive areas (if required)
- 301 redirects
- Flush permalinks
- Configure to serve SVG/HTML5 video
- Remove robots.txt
- Integrate (existing) Google Analytics
- Change payment gateways from test mode
- Favicon, Apple touch icon and win tile icon
- Check archive pages
- Check Search page (even if there isn't search field)
- Check file permissions
- Change owner to apache/plesk user/group
- Remove preview files/database/database user(s)
- Delete staging database and users
- Delete staging site