Can't view MSG or EML files
If you attach an email message (.msg or .eml file) to a message in Outlook synced with GSSMO or IMAP, recipients using Microsoft Exchange or other non-Gmail mail services can't read the attachment (the attachment appears blank). Avoid this by forwarding the original message with the non-Gmail mail service, instead of attaching the original message as an .msg or .eml file.
Email message attachments sent from Outlook directly to the Gmail web app are read differently, depending on type:
- .eml attachments are readable with Gmail's EML Viewer.
- .msg attachments are not readable.
GSSMO automatically converts .msg and .eml attachments to a format that Gmail can read (message/rfc822 format). So a .msg or .eml attachment sent from one GSSMO user to another GSSMO user, or from a GSSMO user to the Gmail web UI, is readable by the recipient.