Hi chrisaliz,
Thanks for contacting Apple Support Communities!
We understand that you're unable to access email on your three iPhones at home.
Is this happening while you're connected via Wi-Fi or when using your cellular connection?
If it's happening while you're connected to your home Wi-Fi network, you may consider checking your Wi-Fi network settings to ensure that the settings are correct for your iPhones as outlined here: Recommended settings for Wi-Fi routers and access points
If this happens while you're connected to Wi-Fi and cellular networks, check out the troubleshooting steps outlined here if you're unable to receive mail on your iPhones: If you can't receive email on your iPhone, iPad, or iPod touch
"Remove your email account and set it up again
- On your computer, sign in to your email provider’s website. Make sure that all of your email is there or make sure that your email is saved somewhere other than your device.
- On your device, go to Settings > Mail, then tap Accounts.
- Tap the email account that you want to remove.
- Tap Delete Account.
- Add your account again.
If these steps don't work, contact your email service provider for more information."
We hope this helps.
Cheers!