Best Email Client for Comporium Email

The best email client for Comporium email depends on how many mailboxes you read and on how many computers. Comporium makes no mail app, so a comporium.net address is read in webmail or in another company's program over IMAP, with your normal password. For one address on one phone, the phone's own Mail app is enough. For one address on a home computer, Thunderbird or Apple Mail does the job with no license fee. For a comporium.net address beside Gmail and work mail, read on more than one computer, pick a client that holds every account in one list.

The short answer, by situation

Seven situations cover almost everyone with a Comporium address in 2026. The table is the recommendation. The rest of the article explains each pick, gives the settings we tested, and covers the outgoing port problem that trips up most setups.

Is there a Comporium email app?

No. Comporium, the family owned phone, cable and internet company based in Rock Hill, South Carolina, gives its customers comporium.net mailboxes and a webmail site at webmail.comporium.net, which opens a Zimbra web client. It does not publish a mail program for iPhone, Android, Windows or Mac. Its own setup page lists server settings and points iPhone and Android users to the phone's built in mail app. So the client is your choice, and the right one depends on what else you read.

What are the Comporium email server settings?

These are the settings Comporium publishes, with what each one did when we connected from our servers in the United States in October 2026.

• Incoming, IMAP: mail.comporium.net on port 993 with SSL. It answered and offered a plain password sign in. Port 143 with STARTTLS also answered.
• Incoming, POP: mail.comporium.net on port 995 with SSL. It answered, but POP keeps mail on one device, so prefer IMAP.
• Outgoing, SMTP: smtp.comporium.net with authentication on. Comporium lists port 465 with SSL for desktop programs and Android and port 587 for iPhone. From outside Comporium's network, only 587 answered, offering STARTTLS and LOGIN.
• User name and password: the full address, for example [email protected], and the same password you use in webmail. No app password.

The full table, the mailbox limits and what to check when a setup fails are on the Comporium email settings and app page.

Why does my Comporium email not send?

Most of the time it is the outgoing port or the outgoing login. A mail program set to smtp.comporium.net on port 465 can sit and time out when you are on someone else's network, because that port did not answer us from outside Comporium. Switch outgoing mail to port 587 with STARTTLS, and make sure My outgoing server requires authentication is turned on with the same full address and password as incoming mail. If it still fails, sign in at webmail. A refusal there means the password, not the program.

Webmail, for one address on a shared computer

Webmail asks for the full address and password and runs in any browser with nothing installed, which suits a family computer or a library terminal. The limit is one mailbox per sign in. A household with two comporium.net addresses signs out and back in to see both, and nothing else you own appears there. It also shows you how full the mailbox is, which matters because Comporium caps it at 5 GB.

The phone's own Mail app, for reading on the go

iPhone Mail and the Android email apps take a comporium.net address over IMAP with the ordinary password. On an iPhone open Settings, then Apps, then Mail, then Mail Accounts, then Add Account, choose Other and Add Mail Account, then IMAP, and type mail.comporium.net and smtp.comporium.net yourself rather than letting the phone guess. This is the cheapest good answer for anyone who mostly reads mail on a phone.

Apple Mail, for one address on a Mac

Apple Mail is already on every Mac and its All Inboxes view merges several accounts. It handles comporium.net with no fuss once the hosts are typed in. The limit is the platform: if the office has a Windows PC, or a spouse uses a Chromebook, Apple Mail is not on it, and each Mac needs its own setup.

Thunderbird, for a Windows PC

Thunderbird runs on Windows, macOS and Linux with no license fee and keeps a local copy of your mail. Choose IMAP rather than POP so the phone and the computer see the same folders, and set outgoing mail to 587 by hand, because automatic setup may pick 465. Unified Folders merges accounts, though every machine needs its own setup and its own copy of the settings.

Classic Outlook, if you already pay for Microsoft 365

Classic Outlook handles Comporium mail well once it is set up by hand. Its automatic setup often guesses wrong for regional providers, so choose manual setup, pick IMAP, enter mail.comporium.net on 993 with SSL and smtp.comporium.net on 587 with STARTTLS, and under More Settings turn on My outgoing server requires authentication. The cost is the Microsoft 365 or Office license, and each account shows as its own folder tree rather than one merged list.

Gmail, and the date to plan around

Many people read a comporium.net address inside Gmail through the setting that checks mail from other accounts, which uses POP on port 995. Google has announced that Gmail removes that POP fetch, along with Gmailify and Send as for third party addresses, in January 2027. After that, a Comporium address pulled into Gmail stops updating. If this is how you read it today, switch before the date rather than after the first missed invoice. Our guide to checking mail from other accounts after the change covers the options.

A browser client, for several addresses on several computers

The hard case is the common one for a small business in Comporium country: the comporium.net address that has been on the bank file, the county tax notices and every supplier account for twenty years, a Gmail address for newer things, maybe a work domain, and a family member's address that someone still watches. Read on an office PC and a laptop at home.

That is the case Inboxes is built for. It runs in a browser tab on Windows, Mac, Linux or a Chromebook, connects comporium.net with the password you already have, and puts it in one stream with Gmail, Yahoo, iCloud, AOL and your own domain, each row marked with the account it came from. Every message arrives tagged Important, Newsletter, Notification, Spam or Other, which helps on an address that has gathered years of mailing lists and is creeping toward the 5 GB cap. Replies go out through smtp.comporium.net, so customers still see the address they know. Plans start at 49 dollars a month for five mailboxes, or half that billed yearly. The IMAP email client page explains how the connection works for any provider.

For a shop or a contractor, the old address is often where supplier bills arrive as PDF attachments. Once they all land in one list, the next job is getting them into the books, and a tool that will pull the totals and line items out of those supplier invoices saves retyping each one.

What none of these clients will fix

None of them hosts your mail. A Comporium mailbox lives at Comporium and depends on your Comporium account; if that account closes, the address stops working in every program at once, so move important records before you cancel service. None of them lifts the 5 GB mailbox limit either, so old newsletters still need clearing. And none of the password based routes connects a Microsoft work mailbox anymore. Inboxes signs in with a user name and password or app password, so outlook.com, hotmail.com and Microsoft 365 addresses will not connect, while comporium.net, Gmail, Yahoo, AOL, iCloud and own domain mailboxes do.

Frequently asked questions

What is the best email app for comporium.net?

For one address on a phone, the built in Mail app with IMAP settings. For one address on a computer, Thunderbird on Windows or Apple Mail on a Mac. For a comporium.net address alongside Gmail and work mail on more than one computer, a browser based client that shows every account in one list, such as Inboxes. Comporium itself makes no app.

How to set up Comporium email in Outlook?

Choose File, then Add Account, then Advanced options, then Let me set up my account manually, and pick IMAP. Incoming is mail.comporium.net on port 993 with SSL, outgoing is smtp.comporium.net on port 587 with STARTTLS, and outgoing authentication must be on with the full address and password.

Is Comporium webmail Zimbra?

Yes. webmail.comporium.net opens a Zimbra web client sign in. That only affects the browser view. Mail programs connect to the same mailbox over IMAP and SMTP with the settings above, so you can use webmail and a mail program side by side.

Can I read my Comporium and Gmail addresses in one place?

Not in webmail, which shows one mailbox per sign in. Apple Mail, Thunderbird and Outlook can hold several accounts on one machine. A browser based client such as Inboxes holds the comporium.net address and your other accounts in one list on every computer you use.

Other regional providers have their own quirks: the best email client for Consolidated email covers FairPoint and Fidium addresses, and the best email client for EarthLink email covers earthlink.net and mindspring.