You can now connect BOMA to Hubspot using Zapier, you can connect any of your Lead Forms in BOMA to Zapier, which can then be connected to Hubspot to either send Contacts to Hubspot (a Zapier Trigger) or to receive contacts from Hubspot (a Zapier Action).
We are currently writing up a guide on how to do this, but in the meantime you can connect your BOMA to Zapier and start to set up the integration using Hubspot's instructions:
Further Reading:
Lead Form to sending email (email delayed by one day)
Lead Form to sending email – email sending on specific time and day
Connecting Zapier and Posting to WordPress
What you need to know about Zapier for BOMA
Zapier one step instructions for Image + Content