Configuring fmguy.com for your iPhone

First, a few words about fmguy.com:

Fastmail is an email hosting company based in Melbourne, Australia. In addition to its Fastmail-branded services, the company also operates Topicbox, a mailing list service, and Pobox, an email service it acquired in 2015. The company was acquired by Opera Software in 2010 but became independent again in 2013 through a staff buyout. Its servers are located in Bridgewater, New Jersey and Seattle, Washington. Source: https://en.wikipedia.org/wiki/Fastmail

How to configure fmguy.com:

It is possible that Mail will find your e-mail configuration itself, then set up your account. Apply these steps in order to see if that will be possible:

1. Go to Settings > Mail, then click Accounts
2. Click Add Account, click Other, and tap Add Mail Account
3. Enter your name, your email address, your password and a description for account
4. Click Next. The Mail app should now try and find the mail configuration and complete setting your account. If Mail finds your e-mail configuration, click Done to finish your setup.

In case Mail can't automatically set up your account, it means that you have to enter them yourself. I think you may find the following info useful:

Incoming E-mail (IMAP) Settings

Outgoing Mail Settings (via SMTP)

Tap Next, then follow these steps:

1. Select either IMAP or POP for your new account If you are not certain which one to select, contact fmguy.com.
2. Type the required information (You will refer to the table above) for Incoming Mail Server and Outgoing Mail Server. Then tap Next
3. If your email settings are correct, click Save to complete the setup. If your mail settings are incorrect, you will be asked to modify those settings
4. If you still aren't able to set up your e-mail account or save your e-mail settings, contact your e-mail provider.