Select the "Mail" section in the settings.

In Mail, please select "Accounts".

Next, select "Add account".

Select "Other" from this list.

Click on "Add mail account".

Now create your new account and please enter your data:

Name: Max Pattern
Email: max.pattern@swisscows.email
Password: Password you entered during Swisscows registration.
Description: Swisscows

Again for clarification:

Name: Max Pattern
Email: max.pattern@swisscows.email
Password: Password you entered when you registered with Swisscows.
Description: e.g. Swisscows or max.pattern@swisscows.email

Check your details.
Make sure that "IMAP" is activated above.

After checking all the data, click on the “Save” in the upper right corner.

Process is completed; your @swisscows.email is successfully added to the iPhone App and ready to use!

Swisscows E Mailbox Overview.