How to configure postinbox.com for an iPhone

First, a few words about postinbox.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 postinbox.com

Mail app can find your configuration itself and complete setting up your account. Follow the following steps first in order to try:

1. Go to Settings > Mail then click Accounts
2. Click Add Account > Other then click Add Mail Account.
3. Type your name (can be any name), your email address, password then a description for account.
4. Tap Next. Mail should now try and find the mail settings and set up your account. If the Mail app finds the email parameter, tap Done to complete your account setup.

In case the Mail app can't automatically set up your account, it means that you need to enter them manually. We think you will find the following table useful:

Incoming E-mail (IMAP) Setup

Outgoing Mail Setup (via SMTP)

Tap Next, then follow these steps:

1. Select IMAP or POP for your new account If you are not certain which one to opt for, contact postinbox.com
2. Type in the details (You might want to refer to the table above) for Incoming Mail Server and Outgoing Mail Server. Then click Next.
3. If your mail settings are correct, tap Save to complete the setup. If your mail settings are incorrect, you will be asked to edit those settings.
4. In case you still can't set up the account or store your settings, contact postinbox.com.