sick and tired of em client .i get emails over 10 mb but unable to forward them. I opened agmail account and using the same isp they go right now
There is no limit in eM Client as to the size of email attachment you can send. Rather, this is determined by your email provider, so better to check with them about increasing the size restriction if it is a hosted server, or change to another provider if you are using a free option like Gmail (25MB) Outlook.com (10MB) or Mail.com (50MB). Find something that suits your needs if you regularly send large attachments. Note that there can also be a difference in restriction between sending using a web interface, and SMTP (email client application).
The new version 8 of eM Client, due to be released soon, has Cloud storage support for attaching files directly from cloud services (Dropbox, OneDrive, Google Drive). That may be a better solution for you.