I want to notify all Maintenance Team members when a new request is created inside that particular team.

At the moment I have this functionality handled by an automated action like this:
https://i.imgur.com/ZbDstba.png

Python code:

body_html = """
    ...
""" + record.name + """
    ...
"""

num_of_members = len(record.maintenance_team_id.member_ids)

if num_of_members:
  members_emails = []
      
  for i in range(num_of_members):
    members_emails.append(record.maintenance_team_id.member_ids[i].email)
            
  email_to = ",".join(members_emails)
    
  mail_pool = env['mail.mail']
  values={}
  values.update({'subject': 'New maintenance request - ' + record.company_id.name})
  values.update({'email_to': email_to})
  values.update({'body_html': body_html})
  msg_id = mail_pool.create(values)
  
  if msg_id:
    mail_pool.send([msg_id])

But now I would like to convert this solution to a custom module. What is the correct way to do this? 

Should I inherit `maintenance.request`, override the create method and send my email somehow (how exactly?) with my hardcoded email body? 

class MaintenanceRequest(models.Model):
    _inherit = 'maintenance.request'

    @api.model
    def create(self, vals):
        req = super(MaintenanceRequest, self).create(vals)
        
        body_html = """
            ...
        """ + req.name + """
            ...
        """
        # ...
        if msg_id:
            mail_pool.send([msg_id])

        return req

Or there is a way to hook myself to a premade function for sending notification and just tell it to run also for the team members?  I don't want to add all of them as followers (because they would get spammed with unnecessary updates about the request) - only to notify them about the new request and then they can follow it if they needed to.