Plusnet IMAP config for emClient

So according to Plusnet's guide to setting up your email client (what other settings to I need), I need to use the following settings:
server: imap.plus.net
port: 993
STARTTLS: yes

I'm configuring emClient to use these settings and it doesn't work, I get the following error reported by the operations log of emClient (my plusnet email name is replaced for security):

11:32:01 [email protected] [IMAP] MailClient.Accounts.ConnectionException: Courier-IMAP server shut down by signal.
---> MailClient.Imap.Base.ByeException: Courier-IMAP server shut down by signal.

I've contacted support who recommended using port 143 but this doesn't work. SMTP works fine and I can send emails using emClient.

Is anyone successfully using emClient with Plusnet IMAP?

What about user name, password, and authentication method?

I'm using my Plusenet usernasme and password, along with port 993 and SSL/TLS (legacy)

Apparently it's a known issue since March this year and still PN are saying "bear with us"

Time to get yourself ISP-independent email. Either free gmail or Microsoft Outlook (ex hotmail) or if like me you don't fancy those pay a small amount for a domain and a mail service.

Usually all working within minutes of doing that. In your case, today!.

I use Tsohost (now owned by GoDaddy) and ionos (ex 1 & 1). Both are fine. For years it was just Tsohost but then I needed a lot more web and mail space and that got expensive with them. Ionos is also getting more expensive for space but at the moment I'm on a legacy cheap completely unlimited web space product. Until they decide to "retire" it of course.

A once-off hassle is letting all important contacts know the new one, but you ease the pressure by telling them using the
Plusnet one and asking them to acknowledge to the new one. You can do that over a few days starting with the frequent ones.

No need to tell most commercial contacts. Just change it in your account details with them. They should be given a unique "alias" so if you get spam to that address you know where it leaked from so can block it and change it again in your account with them. Which you can't do with a standard ISP-based address. Good providers allow unlimited aliases.

Start sending (and replying) purely from your domain but continue to listen to both the new and old ones until you are confident nobody is sending to the ISP address. (Possibly you can set the ISP one to forward to the domain anyway).

The problem of your email address if you migrate to another ISP is solved for ever. Nobody needs to know.

Similarly, changing your email provider is not a biggy, as you can fairly easily move the domain host if you wish or just leave it where it is and change the name server links in the domain account. The two do not have to be with the same provider.

+1. Great service and value from Plusnet but its webmail is a disaster, gave up after an afternoon trying to set it up when we joined PN, many complaints on PN forum this year but in fairness it's a basic budget package. Fastmail basic package is about £3 pm, used with Thunderbird, no problems in seven years.

Time to get yourself ISP-independent email. Either free gmail or Microsoft Outlook (ex hotmail) or if like me you don't fancy those pay a small amount for a domain and a mail service.

I think you may be right. I already have a GMail account but it's not my main email and I'd prefer to pay a little per month for a service that's not mining my information and/or selling me advertising.

I'll take a look at Ionos and Godaddy/TsoHost, I already have my own domain name registered with easily.co.uk and redirecting to my Plusnet email, it's worked fine for years but after reading the pretty dire Trust Pilot reviews for Easily, I'll look at moving my domain when it comes up for renewal, perhaps to the same company that ends up providing my email.

In reply to a post by Malwaremike:

+1. Great service and value from Plusnet but its webmail is a disaster, gave up after an afternoon trying to set it up when we joined PN, many complaints on PN forum this year but in fairness it's a basic budget package. Fastmail basic package is about £3 pm, used with Thunderbird, no problems in seven years.

Thanks, I'll check out FastMail

In reply to a post by Malwaremike:

+1. Great service and value from Plusnet but its webmail is a disaster, gave up after an afternoon trying to set it up when we joined PN, many complaints on PN forum this year but in fairness it's a basic budget package. Fastmail basic package is about £3 pm, used with Thunderbird, no problems in seven years.

I've signed up and successfully imported all of my Plusnet email to Fastmail, a very smooth and easy process with good logging to show what's been done. I'm impressed so far.

According to FastMail's pricing plans, the basic budget package doesn't include "Your choice of email apps (Outlook, iPhone Mail)", does that mean you can't connect to it with any email client (I see you said it works fine with Thunderbird)?

FastMail uses app passwords to allow clients to connect (you can't use your Fastmail account password) so I'm wondering if app passwords are not a feature of the basic package and hence you can't connect an email client such as Outllok, Thunderbird etc?

In reply to a post by joconnell:

does that mean you can't connect to it with any email client

Yes, seems like you can't do that which is a stingy limitation for a paid provider:

In reference to www.fastmail.help/hc/en-us/articles/360058752854:

Users on a Basic plan will not be able to use Fastmail on third-party mail clients, or create app passwords.