Navigate to Confluence Administration → Mail Page → Configuration.
Maximum length of a side of an image in pixels
Enter the pixel value (number only - 200 200px) of the side length of an image here.
Images larger than the value entered here will be scaled down.
Image without scaling
Image scaled to 200px
Default mail server for the app
Select the mail server which Mail Page should use to send mails.
You can select only the mail servers already configured in your Confluence system.
Enter the number of recipients your mail server can handle at once (as in: in a single e-mail).
The default are 100 recipients for one mail.
Which logo do you want to be displayed in the header of the email?
Select use site logo to display the logo of your Confluence instance.
Select use space logo to display the logo of the space in which the page is located within.
Don't forget to click on the Save button at the end to confirm your changes.
On this page
Link to this page: https://seibert.biz/mp-configuration