What is the maximum size of an e-mail message?

You can define the maximum size of an e-mail under "Incoming - Protection settings" > "Limitation of e-mail size". By default, a maximum size of 50MB is set. The value can be extended to a maximum of 2048MB.

If you don't want to use any limit, then you can check "No limit".

Furthermore, you can specify what action should be taken by EuropeanMX when a message of this size is received. By default, such a message is rejected and the sender receives a corresponding notification from the system.

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