Email Size Calculator
Gmail clips messages above 102KB. Outlook stops syncing attachments above 25MB. This tool tells you whether you'll trip either limit.
You ran the numbers. Now see your real ones.
A calculator works from the figures you type in. Outsolvi measures them on the email you actually send, and grades every open so Apple Mail pre-fetches and security scanners don't inflate the count. Outlook and Gmail, from $7/user/mo billed yearly, 14-day free trial.
See it on your own inboxSums plain-text body, HTML body, inline-image Base64 expansion (×1.37), attachment Base64 expansion. Flags Gmail clip risk and Outlook attachment limits.
Before sending a large HTML email or one with multiple inline images. Especially before a newsletter send.
FAQ
What does Gmail clipping actually do?+
Truncates the message body and shows a 'View entire message' link. CTA links below the cut still work via that link, but tracking pixels at the bottom of the body don't fire reliably.
Keep going
Articles, glossary entries, and other tools on the same topic.
Nate built Outsolvi after watching every email-tracking tool he had ever used lie to him about opens. Outsolvi grades every open as a person or a machine, in Outlook and Gmail, so the number on the dashboard is one a rep can actually act on.
We update these pages when the underlying mechanics change. new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.