Increase email attachment size to 25MB or more
We had a batch of outgoing 'thank you for submitting your application' emails fail because the because the PDF copy of the application exceeded the system's 10MB limit. We use file attachments across applications and grantee reporting and we like to include a PDF summary of whatever got submitted, but the 10MB attachment limit prevents us from doing so, particularly for our lengthy research applications.
Emily Bever
shared this idea
It is intentional that we do not allow larger attachments to be sent. Files over 10 MB, particularly those approaching 25 MB, can often encounter delivery issues. Most email systems enforce size limits in the 20–25 MB range, and attachments increase in size during transmission (by roughly 30%) due to encoding. This means larger files may be delayed, rejected, or not successfully delivered to recipients.
To ensure a more reliable and consistent experience, we recommend sharing larger files via secure download links or by providing access through the platform instead. This approach works more reliably across different email providers and is better suited for users on mobile devices or within corporate environments that apply stricter controls.
Using this method helps avoid delivery issues and ensures recipients can access files without interruption.
If helpful, we’d be happy to walk through options with you, such as giving a user a direct link to their record / attachment or directing users to login. Reach out to Support or your CSM to discuss what would work best for your use case.
