Colton.com Email Troubleshooting Guide
Server Settings
Incoming Mail — POP3
Secure (POP3S) pop.colton.com SSL 995
Incoming Mail — IMAP
Secure (IMAP) mail.colton.com SSL 993
Outgoing Mail — SMTP
Secure (SMTP/TLS) smtp.colton.com TLS 587
IMAP vs POP3 — Which Should You Use?
📡 IMAP — mail.colton.com

Email stays on the server. Your client syncs with it, so messages look the same everywhere you check.

  • Works across phone, tablet, and computer simultaneously
  • Folders and read/unread status stay in sync
  • Deleting on one device removes it everywhere
  • Mail is safe even if your device is lost or replaced
  • Requires an internet connection to access mail
📥 POP3 — pop.colton.com

Email is downloaded to your device and (by default) removed from the server. Simple and self-contained.

  • Works on one device at a time
  • Mail is stored locally — readable offline
  • Downloaded messages don't sync across devices
  • If your device is lost, so is your mail history
  • Good for low-storage server plans
Not sure which to pick? Choose IMAP. It keeps your email accessible on all your devices and backed up on the server. Use POP3 only if you need offline access on a single machine or your server storage is limited.
Your Login Credentials
Username
your chosen username
The name you picked when setting up your account.
Email Address
username@colton.com
Replace "username" with your actual username.
Password
••••••••
⚠️ Case-sensitive — check Caps Lock if login fails.
Spam Filter
GoSecure
Colton's spam filtering service.
Common Problems & Fixes
1

Can't send email (SMTP connection error)

Your outgoing server must be smtp.colton.com port 587 with TLS

2

Can't receive email (POP3/IMAP timeout)

For IMAP use mail.colton.com — for POP3 use pop.colton.com. Verify the port matches your encryption setting: SSL on 993 (IMAP) or 995 (POP3).

3

Login rejected / authentication error

Your password is case-sensitive. Check that Caps Lock is off. Your username is just the part before the @colton.com — not your full email address, unless your client specifically asks for it.

4

Missing emails / messages going to spam

Colton uses GoSecure as its spam filter. Legitimate mail may be caught there. Log in to your GoSecure account to review quarantined messages and whitelist senders.

5

SSL certificate warning on connection

Make sure your device's date and time are correct. An incorrect system clock is the most common cause of SSL trust failures. If the warning persists, call COLTONTEL at 503-824-3211.

Quick Setup Checklist
Incoming server hostname is correctIMAP: mail.colton.com  |  POP3: pop.colton.com
Outgoing (SMTP) server is smtp.colton.comUse port 587 (TLS)
Port number matches your encryption typeSSL and non-encrypted connections use different ports — don't mix them.
Password entered exactly as set (case-sensitive)A single capitalization difference will cause login to fail.
Email address is username@colton.comSubstitute your actual username for "username".
Checked GoSecure spam filter for missing mailExpected messages may be quarantined by GoSecure.
GoSecure Spam Filter
🛡️

About GoSecure

Colton.com uses GoSecure to filter spam before it reaches your inbox. If you're expecting an email that never arrived, it may have been flagged. Log in to your GoSecure account to view quarantined messages, release false positives, and manage your whitelist/blacklist. If you're unsure how to access GoSecure, contact COLTONTEL at 503-824-3211.

💡
Recommended setup: Use IMAP with SSL on port 993 (incoming) and SMTP with TLS on port 587 (outgoing). This keeps your connection encrypted and keeps email in sync across multiple devices.
📞
Still not working? Call COLTONTEL at 503-824-3211. Have your email address and client name (Outlook, Thunderbird, Apple Mail, etc.) ready to speed things up.
Useful Links
After Hours Support: 503-824-4636