With recent improvements you can now import message from ETHMail into your Gmail account.
Steps to follow
1. Generate access keys
2. Go to Gmail Settings
- Go to Gmail Settings → Accounts and Import
- In Check mail from other accounts click Add a mail account
3. Add your ETHMail account to Gmail
- Paste your ethmail email address into the input and click next

- Choose Import emails from my other account (POP3) (it should be already selected) and click next

- Paste the key you generated in first step as password
- Verify the username is your ethereum address (0x123...456)
- Make sure the mail server has address ethmail.cc instead of mail.ethmail.cc
- Set port to 995