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Comcast Email Not Working on iPhone? Here’s How to Fix It

Posted: Aug 14, 2025
- Comcast Email Not Cooperating with Your iPhone? Here's the Lowdown**
Is your Comcast (Xfinity) email suddenly giving you the cold shoulder on your iPhone? You're not the only one. Lots of people run into snags where their Comcast email just won't send, get, or play nice with their iOS devices. This guide will take you through the **8 most usual suspects** behind this issue, providing **straightforward fixes**, including **advice** and a **collection of common questions** to get things up and running ASAP.
- 8 Reasons Your Comcast Email Isn't Jiving with Your iPhone**
- 1. Third-Party Access Security is Off**
Comcast put in place a security thing called **Third-Party Access Security**. It needs to be on so email programs like Apple Mail can do their thing. If this is off, your iPhone can't talk to Comcast's servers.
- Fix:**
- Hop onto your **Xfinity email using a browser**.
- Hit the **gear-looking thing (Settings) → Security**.
- Make sure **Third Party Access Security** is ticked.
- Save your changes and then put the account back on your iPhone.
- 2. Your SMTP or IMAP Settings Are Off**
If your email is getting stuff but can't send anything, it's likely something's not right with your **SMTP (outgoing mail) settings**. Things that usually go wrong include:
- The **server name** is wrong (`smtp.comcast.net`).
- The **port number** is off (should be **587** for SMTP).
- SSL/TLS** isn't turned on.
- Fix:**
- Head to **Settings → Mail → Accounts → Pick your Comcast Email**.
- Look at **SMTP**, and check:
- Host Name:** `smtp.comcast.net`
- Username:** Your full email address
- Password:** Your current Xfinity password
- Use SSL:** ON
- Authentication:** Password
- Server Port:** 587
- 3. Your iOS or Mail App Is Behind the Times**
An older version of **iOS** or the **Mail app** can cause problems when trying to make things compatible with Comcast's servers.
- Fix:**
- Update your iPhone: **Settings → General → Software Update**.
- If you're using the **Xfinity Connect app**, get the newest version from the **App Store**.
- 4. You Changed Your Password, But Your iPhone Doesn't Know**
Ok, so **you recently updated your Comcast password**? Your iPhone might still be trying to use the old one.
- Fix:**
- Type in the new password** here:
- Incoming Mail Server** (`imap.comcast.net` or `mail.comcast.net`).
- Outgoing Mail Server** (`smtp.comcast.net`).
- 5. Comcast Is Blocking Your IP Address (Wi-Fi vs. Cellular Issue)**
Sometimes, **Comcast will block certain ISP IPs** (like Fidium), and that stops you from getting your email when you're on Wi-Fi. But then it works fine when you use cellular data.
- Fix:**
- Try switching to **mobile data** and see if that fixes things.
- If the issue seems to be Wi-Fi-related, call **Comcast Support** and ask if they've blacklisted your IP.
- 6. VPN or Something Else on Your Network Is Getting in the Way**
A **VPN** or **firewall** might be messing with Comcast's email servers.
- Fix:**
- Turn off your **VPN** for a bit.
- Reset your network settings: **Settings → General → Reset → Reset Network Settings**.
- 7. Something Went Wrong When Setting Up Your Mail**
If the email account didn't get set up right the first time, deleting it and starting over might do the trick.
- Fix:**
- Delete the account:** **Settings → Mail → Accounts → Remove**.
- Put it back in manually** (using IMAP settings) instead of letting it set up on its own.
- 8. Comcast's Servers Are Down**
Every now and then, the problem is on **Comcast's end** (they're doing server work or something's gone wrong).
- Fix:**
- See what's up with **Xfinity's Status** ([status.xfinitycom]
- Use the **Xfinity Connect app** or **webmail** to get to your email while they sort things out.
- Common Questions: Comcast Email Problems on iPhone**
- 1. Why Does My Comcast Email Keep Saying Cannot Get Mail?**
It usually means the **IMAP server (`imap.comcast.net`)** isn't answering. Check this:
- Make sure you're online.
- Make sure your **IMAP settings** are right (port **993**, SSL ON).
- Check that **third-party access** is turned on.
- 2. Why Can I Get Emails But Not Send Them?**
That's almost always an **SMTP problem**. Double-check:
- SMTP server:** `smtp.comcast.net`
- Port:** 587
- SSL is on**
- 3. How Do I Put Comcast Email Back on My iPhone?**
- Settings → Mail → Add Account → Other → IMAP**
- Type in:
- Incoming Mail Server:** `imap.comcast.net`
- Outgoing Mail Server:** `smtp.comcast.net`
- Username:** Your full email
- Password:** Your current Xfinity password
- 4. Why Does My Email Work on the Xfinity App But Not Apple Mail?**
The **Xfinity app** goes around the usual IMAP/SMTP settings. When Apple Mail isn't working, look at:
- Third-party access** (make sure it's on in webmail).
- Your server settings**
- 5. If I Delete and Re-Add My Email Account, Will I Lose My Emails?**
Nope, your emails are kept on **Comcast's servers**. Deleting the account just gets rid of the iPhone's connection to it.
- Last Resort: Contact Xfinity Support**
If **none of this does the trick**, get in touch with:
- Xfinity Support:** 1-800-XFINITY
- Customer Security Assurance:**
By going through these steps, you should be able to **get your Comcast email working** on your iPhone again. If it's still being difficult, it might need **Comcast to fix something on their end**.
- Did this help you out?** Tell us in the comments!
About the Author
For quick fixes, check our troubleshooting guides or contact our dedicated email support team for personalized assistance.