An attachment is rejected as 'too large'
Limits vary, but above roughly 25 MB most mail systems push back. Do not split the file; link to it instead.
Try this first
- 1Upload the file to OneDrive or SharePoint and share a link instead of attaching. The recipient gets it without weighing down their mailbox.
- 2For sensitive files: use a shared link with an expiry date and optionally a password. It expires on its own afterwards.
- 3Export photos smaller first if peak quality is not needed. Often saves a factor of ten.
- 4Very large or many recipients? A transfer portal like WeTransfer is fine, as long as the data is not confidential.
When to bring us in
If you regularly share large files with external parties, we can set up a clean solution inside your 365 environment.
See also
- Our emails land in spam for some recipientsAlmost always an SPF, DKIM, or DMARC setting that is wrong or missing, or a sender name that mimics a well-known brand.
- Someone reports receiving phishing emails "from us"Read: spoofing. Someone is abusing your sender name, not necessarily your actual mailbox.
- An email bounces (NDR): delivery failedThe NDR text usually states the exact reason. Reading it is step one.
None of the above fits?
Describe your situation below. We pass your input plus the steps you already saw to our AI and return tailored next-step advice. If it's too risky to DIY, we'll say so.
Or skip the DIY entirely
Our Managed IT clients do not look these things up. One point of contact, a fixed monthly price, resolved within working hours.