Oh, You can do that, but there is no way to do it for a specific segment in the mautic dashboard, so, I’ll suggest you trigger the specific email ID with a cron job, and you then add a delay between when it would call the cron job, the below send 20 emails every 2hours.
0 */2 * * * php /path/to/mautic/bin/console mautic:broadcasts:send --limit=20 --id=ID --channel=email
–limit=X option describes how many contacts will be added to the command at each run. Default is 100 contacts, so, setting it to 20 processes 20 contact every 2 hours
–id=X is what ID of email to send.