AcceptIO

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Created: 12 November 2026

Last Updated: 12 November 2026

We have discontinued Roundcube access to email on the AcceptIO server. If you really must use a webmail intterface, look for some other webmail site that will allow also accessing an external email account. Configure it to reach out to your AcceptIO email account. Your best bet, however, is to use a PC or mobile email client. See Configuring your email client.

Configuring your email client

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Created: 12 November 2026

Last Updated: 12 November 2026

The AcceptIO server offers direct, secure connections to your email via SMTP (for outgoing messages) and either IMAP4 or POP3 (for incoming and stored messages). See Frequently Asked Questions for a brief explanation of what those technologies are. We no longer offer a webmail interface, so you must use an application like Outlook, Thunderbird, or one of many, many mobile apps to access email on AcceptIO.

For all configurations, you should specify using a normal password but with a secure connection. Unfortunately, there is a lot of different terminology for "secure connection" in email applications. If it's not obvious, look for something like SSL or STARTTLS. If your email client offers more than one option, you should prefer STARTRTLS simple because it's more reliable. The other options will also work.Most email clients will default the port number to a well-known value based on the type of secure connection your configure. 

• For SMTP access, the server name is smtp.acceptio.com. For STARTTLS, use port 587. For SSL, use port 465. (Alternate port for STARTTLS is 8111,)
• For IMAP4 access, the server name is imap.acceptio.com. For STARTTLS, use port 143. For SSL, use port 993.(Alternate port for STARTTLS is 1788.)
• For POP3 access, the server name is pop.acceptio.com. For STARTTLS, use port 110. For SSL, use port 995. (Alternate port for STARTTLS is 119.)

It is unusual for an ISP to intercept or block any of those standard port numbers, but it can happen. If you find that to be the case, you can use the alternate ports mentioned above; otherwise, use the standard ports.

While configuring your email client, you might have a few unsuccessful attempts to verify the connection. If you have a few too many unsuccessful attempts, an AcceptIO server security defense mechanism might kick in and block your connections for a while. This is defend against miscreants and bots that try lots of different logins in a short period of time. Our block happens at a very low level. You'll still be able to ping the server and you'll be able to get to web pages, but all of the email-related connections will give you "unable to connect" or similar. If that happens to you, wait a little while before trying again; 15-20 minutes should be enough to open up the connections again. Be sure to exit your email app while you are waiting; otherwise, it may be silently attempting those unsuccessful login behind the scenes (if that happens enough times, your connections my be blocked for a longer period of time).

If you have any difficulties with this, contact us via This email address is being protected from spambots. You need JavaScript enabled to view it. or by using the contact form at Contact AcceptIO.