In short: the total message size limit (emails + attachments) is 36MB.
- The total of MB you can process through Spotler SendPro is 27 MB;
- The total attachment size is 27 MB, minus your email's size;
The maximum size of a message is set at 36MB. Please note, that this 36MB includes the mail itself and any attachments. The Base64 encoding of those attachments also takes up space. In practice, this means attachments grow by about one third of their file size. Because of this, the limit of 36MB actually means you can send an attachment of roughly 27MB.
You cannot increase this limit, but if you need to lower it for any reason, go to Setup > Sources & API > 'name of your source' > Edit Source. There you can lower the maximum message size per source with the Max. message size setting.
Changing the settings for email size
It is possible to adjust the settings for email size:
- Go to Sources & API under the Setup menu.
- Click on the source you want to change regarding email size.
- In the source screen, click the Edit source button.
- Customize the Max.message size (KB) field and click Save. Please note the limit is 36MB.