Symptoms
- As per the logs the mails are getting delivered in Inbox on the server
- At the time of IMAP Sync from the third-party email clients, email is getting moved to the trash/Spam folder
Analysis
- Once the mails are synced to this client the mails are getting moved to the trash folder and deleted (expunge) from the Inbox
- Since it is an IMAP account all the folders get synced with the server resulting in the deletion of mail from INBOX from the server
Solution
- Please check if there is any filter configured in Mymail account.
- Check if the particular sender is marked as spam in MyMail
OR
- Remove the Mymail application from your android device
- Change the password of your account
It is highly recommended NOT to use MyMail application on Android as it does many operations directly from MyMail server, bypassing the Mailserver