I use IBM Domino email server, some emails are missing!

IBM Domino email server didn't implemented the IMAP protocol with all standard, there is some problems like the period selection. To avoid this under Automatic Email Manager, you have to set the account to get all emails and not from a period like the last 7 days.

1. Edit the account in Automatic Email Manager and move to the server settings

Then click on 'More options', now at right you can select the type of emails you want to receive: Only unread or All emails, we suggest you to choose 'Unread', then under you can select the period, by default it is set to 7 days, change it to 'Get All emails'.

Now it should work with your Domino server.