You can add both Gmail and non-Gmail accounts to the Gmail app on your iPhone or iPad.
Make sure that you've downloaded the Gmail app.
Please note: "hivedemo.co.uk" is for demonstration purposes only. Please use your own email address, as using "hidedemo" will not work.
Step 1 - Open App > Gmail
Open the Gmail app on your mobile device and select IMAP.

Step 2 - Add Email Account
Enter your new Hive and Host email address and hit next.

Step 3 - Incoming Server (IMAP)
Enter your incoming server details:
- Password: your email password
- IMAP Server: imap.stackmail.com
Once you have entered your incoming server details hit next.

Step 4 - Outgoing Server (SMTP)
Enter your outgoing server details:
- Password: your email password
- SMTP Server: smtp.stackmail.com
Once you have entered your outgoing server details hit next.

Step 5 - Account Name
Enter your name and then hit next.

Step 6 - Complete
You are set up and ready to use your new email address on the Gmail mobile app.
