Resend Email add-on allows you to resend the entire email directly from the email log. Before re-sending the email, this add-on allows you to modify the different fields before re-sending the email.
You can also resend all emails or only selected emails in bulk in addition to individually re-sending them.
Screenshots
Install and activate Email Log Resend Email add-on
Resend Email option being show in View Logs page
Resend Email dialog to resend the email
Resend Email dialogs accepts additional values from User