Business phone numbers are initially limited to 250 business-initiated conversations in a 24-hour moving period, but this limit can be increased. Increasing Your Limit Messaging limits can be increased to the following: 1K business-initiated conversations 10K business-initiated conversations 100K business-initiated conversations An unlimited number of business-initiated conversations You can increase your messaging limit to 1K on your own using the following methods. Higher limits, however, can only be achieved through automatic scaling, which happens after your limit has been increased to 1K.