Set Up Email on iPhone (IMAP Guide 2026)

To set up email iPhone Mail app for your Fist Host Mail Box on an Apple iPhone or iPad, you need to:

Head to the Settings icon and locate the Accounts & Passwords option.
Then select ‘Add Account‘.
Select Other from this list.
Select Add Mail Account.

Input the information requested:

Name: Anything
Email: example@yourdomain.com
Password: Webmail Password
Description: Work, Business…etc

Set Up Email iPhone with IMAP

Incoming Mail Server

Host Name: imap.stackmail.com
Username: example@yourdomain.com
Password: Webmail Password

Outgoing Mail Server

Host Name: smtp.stackmail.com
Username: example@yourdomain.com
Password: Webmail Password

Finally, select the mail account and go into the Outgoing Mail Server settings. Select Primary Server, make sure SSL is switched on and the port is set to 587.

If you’re looking to set up mail with Outlook, please see our guide here.

When you set up email iPhone using IMAP, your messages stay synchronized across all your devices. This means emails you read, delete, or organize on your iPhone will reflect the same changes in webmail and other email clients. IMAP is recommended over POP3 because POP3 downloads messages to a single device and may remove them from the server. Before you begin, make sure you have your full email address and webmail password ready. You can verify your credentials by logging into webmail first. For more email setup guides, visit the Fist Host blog.

If your iPhone cannot verify the server or connect after you set up email iPhone, double-check that you entered imap.stackmail.com and smtp.stackmail.com exactly as shown, with SSL enabled. Ensure your username is your full email address, not just the part before the @ symbol. If you see an SSL error, confirm the port is set to 587 for outgoing mail. A weak

Wi-Fi or mobile data connection can also cause setup failures, so try again on a stable network. Contact FistHost support if the issue persists after verifying these settings.

Frequently Asked Questions

What do I need to set up email on my iPhone?

You need your Fist Host mailbox email address and webmail password. Then go to Settings, locate Accounts & Passwords, tap Add Account, choose Other, and tap Add Mail Account.

What are the incoming and outgoing mail server settings for iPhone?

The incoming mail server host name is imap.stackmail.com, and the outgoing mail server is smtp.stackmail.com. Use your full email address as the username for both.

Will my emails sync across all my devices?

Yes. When you set up email on iPhone using IMAP, your messages stay synchronized across all your devices.

Related Guides

Troubleshooting iPhone Mail Issues

If your iPhone says it cannot verify the server identity, make sure the hostname is exactly imap.stackmail.com for incoming and smtp.stackmail.com for outgoing — do not use mail.yourdomain.com. If sending fails but receiving works, the outgoing server settings are the culprit: go back into the account’s SMTP settings, select the Primary Server, and confirm SSL is on with port 587 and authentication enabled using your full email address and password.

If mail still will not send on mobile data, some carriers block port 587 — try switching the SMTP port to 465 with SSL instead.

One last tip: after setup, send yourself a test email from the iPhone and reply to it. This confirms both sending and receiving work before you rely on the account for important messages.