The Office 365 spam filter automatically quarantines bulk emails by default, ie. any that come from using the Zoho mail merge templates that send via mailer.zohocrm.com, even if just sent to 2 people.
I'm noticing when you send to one person, the From address is yourself. But send to 2 or more and it's sent via the mailer, which then gets quarantined.
Just curious how others deal with this? It'd be nice if we could somehow circumvent the mailer.