emails no subject, no content, no sender address

dgfromchippingnorton wrote:

emails no subject, no content, no sender address

Yes it's this one again but all I can find is instructions for iPhone, iPad when my problem is only on iMac!!

Any advice gratefully received

Rebuild the selected mailbox

Mail>Mailbox>Rebuild

Rebuild mailboxes in Mail on Mac - Apple Support

Try re-indexing the mailboxes. This can take awhile if you have a lot of mail.

Reindex messages            For El Capitan, try looking in V3. Sierra use V4. High Sierra use V5.

Reindex messages (2)        See post by Linc Davis

You are welcome.