For Office 365.
What is the maximum size of an sending email?
On the Office 365 environment with the HENNGE One service, you can send an approximately 25MB size email.
The Office 365 service can send/receive an email up to 25 MB by default, but the setting can be changed to 150 MB.
However, if a user sends a large size of email, it will take time to process the email on our service and
it may not be received on the recipient side due to its size limit.
Therefore our service provide an environment where a 25 MB email can be sent by taking into account the Office365 default setting
and general business circumstances.
(If a user sends a larger size of email, it will be a delivery error)