3rd Party Spam Filter for Office 365

Hi Everyone,

Was wondering if anyone here has some input on which spam filter to put in front of office 365. We have been using 365 for about a year now and the spam filtering has always been hit or miss. I have done loads of tweaking a mail flow rules but it just isn’t enough. Some areas we are seeing slip through are clean emails with bad link to malicious payloads in dropbox / box.com / onedrive, Spoofed Microsoft emails even got on the phone with Microsoft and the guy literally goes “woah that’s a bad one”.

I am price shopping right now and we got a quote from Sophos which looks amazing but it’s pricey. Luckly my execs are aware that good security comes a price but sophos might be alittle steep.

Also looking at Appriver and Spam Titan.

Any input would be appreciated! Thanks