this can be done through below setting.
Maximum Email Size for Retriever (Bytes)
Use this setting to define the maximum size of emails that the Retriever Service can retrieve from the Mail
Server. This size includes the email body, header, and attachments.
ļ“ Type: Partition settings group
ļ“ Subtype: Email retriever
ļ“ Data type: Integer
ļ“ Default value: 2097152
ļ“ Minimum value: 0
ļ“ Maximum value: ā
