Confirm that your POP3 server accepts connections and answers as expected, over the encryption you use, so people can always collect their mail.
POP3 is still widely used for downloading mail from hosting accounts and legacy systems. When the service stops, users cannot fetch messages, yet the website and SMTP may be perfectly healthy.
A POP3 monitor connects to the service and checks its greeting, so you find out about the problem before your users’ inboxes do.
Every check is stored in a full log, so you can see exactly when and how something changed.
Not encrypted, SSL/TLS or STARTTLS.
Define a string to expect in the server response for stricter checks.
Typically 110 or 995.
Test from multiple regions.
From sign-up to your first alert in a few minutes.
Host, port and encryption mode.
Set a string that a healthy server returns.
Get notified when a check fails.
Sensible defaults get you started; every option below can be tuned per monitor.
| Setting | What it does |
|---|---|
| Domain / IP | The POP3 server. |
| Port | Port for POP3 communication. |
| Encryption | Not encrypted, SSL/TLS or STARTTLS. |
| String to expect | Text or pattern the server response must contain. |
| Frequency | How often the check runs: 1 to 120 minutes. The Free plan checks from every 15 minutes; Premium from every minute. |
| Locations | Run the check from one or several of 9 locations: Spain, France, United Kingdom, USA (New York, Los Angeles), Australia, Singapore, Japan and Germany. |
| Notifications | Pick any of your pre-configured alert channels: e-mail, SMS, Telegram, Slack, Messenger, voice call, webhooks and more. |
| Status page | Make the statistics of this monitor public or private. |
| Tags | Group monitors with tags to keep large accounts tidy. |
| IP version | Force IPv4, IPv6, or let Upzilla use whichever is available. |
Monitor shared mail servers on behalf of many customers.
Keep company mailboxes reachable.
Watch systems that still poll POP3.
Verify a new mail server before switching DNS.
Create as many notification methods as you like, even on the free plan.
Whichever your users connect with. Many providers offer both, so monitoring each is common.
Port 110 for plain or STARTTLS connections and 995 for SSL/TLS.
Yes, with String to expect in the advanced options.
As soon as a check fails and is confirmed, alerts go to your channels.
No card required. 10 monitors of any type, free.