Those email storms when everyone is hitting “reply all” can get annoying, especially in large companies and Microsoft is aiming to do something about it. A new feature for Office 365 is rolling out soon to help block and discourage users from hitting “reply all” to massive email threads. The feature is going to be more useful for large companies first and then rolling out to smaller ones later on.
For larger companies, Office 365 will help if there are 10 “reply all” messages sent to over 5,000 people within one hour, if this occurs then any further replies will be banned for four hours and users will get a message to say that probably isn’t the best thing to do.
However, once it comes to smaller companies, administrators will be able to tweak the thresholds.