Estonian webhost and mailbox provider Zone now supports BIMI and will display a sender logo in Zone Webmail, if they're able to. VMC is required. Find more details here.
Doing a quick check of my domain data, I think that Zone's primary email domains are:
- webmail.zone.ee
- zone.com.ee
- zone.ee
- zone.eu
- zone.fi
- zone.lt
- zone.lv
They also host email for more than a thousand other domains for customers; all relevant domains have an MX record pointing to zonemx.eu.