# Information (for corporate users)
Information for corporate users. See also the News.
# The subject of the email sent upon error notification will be changed
These changes are planned for Error notification provided as a Messaging API function.
The subject of the Notification email will be changed as follows. We'll also change some of the text in the body of the mail to make it easier to understand.
|Items||Before change||After change|
|Subject||Messaging API: Webhook transmission failed - ||Messaging API: Your server did not return [200 OK] - |
<Channel name> section displays the channel name of the target channel.
# Estimated date of change
May 25, 2021 JST (GMT+9)
# We've released a feature for getting statistics per aggregation unit
You can now obtain statistics per aggregation unit for multiple push messages and multicast messages. You can assign a unit name before sending messages so that you can see statistics for each unit at a later time.
When sending a narrowcast or broadcast message to multiple users, you can specify a request ID to get user interaction statistics of that particular message.
When sending a message to fewer than 20 users, you can't obtain statistics because users' privacy must be protected. However, with the newly-released Get statistics per aggregation unit feature, even if you send a message to a small number of users, by assigning a unit name before sending the message, you can obtain per-unit statistics on multiple messages.
# Information on Icon/Nickname Switch
Icon/Nickname Switch has been integrated into Messaging API.
For more information, see "You can now change the icon and display name of your LINE Official Account (2020/3/17)".