Send emails from btinternet.com account when using third party broadband

[MartinEllis]

I switched broadband provider to Voneus in April 2025. I still have an account with EE (and am under contract until late 2026). I aim to use my btinternet.com email account until my contract with EE expires.

If I try to send emails from my btinternet.com account whilst connected to Voneus broadband, I get various error messages:

Unable to verify account name or password.

Can't connect to the account : "my btinternet email address". Enter the password for user "my btinternet email address".

My outgoing SMTP settings are:

Outgoing Mail Server: mail.btinternet.com

Port: 465

SSL encryption: Enabled

Authentication: Password

When I connect using my existing EE router, I can send emails from btinternet.com without any problems.

I can still access my email via webmail (on a browser).

Can anybody offer me any advice? Many thanks.

[XRaySpeX]

Do you have the identical SMTP server settings on both EE & Voneus BB

Are you sure the Encryption is just SSL & not STARTTLS?

[MartinEllis]

This is a screenshot from the Apple Mail Outgoing Mail Server setting. I assume this is the same for both EE and Voneus (as I'm using the same email client (Apple Mail) for both). 

[Mustrum]

@MartinEllis 

My settings are 

Outgoing Mail Server: mail.btinternet.com

Port: 993

Encryption method : SSL/TLS 

this works fine for 365 mail, but may differ depending on the mail client you are using.

There are more details on the BT Site https://www.bt.com/help/email/manage-email-account/manual-settings/what-are-the-settings-for-outgoin... 

Not STARTTLS

Hope this helps.

[XRaySpeX]

If you've got these settings correct it can only be that you have "your btinternet email address" or "your btinternet email password" wrong under Voneus but not EE.

[XRaySpeX]

@Mustrum : Port 993 is for the IMAP Server, not the SMTP Server.

[Mustrum]

@MartinEllis   I don't have it set up on my iPhone or iPad, but try port 993

[MartinEllis]

If I change the port to 995, the error message above appears (if I'm connected to either Voneus or EE). However if I change the port back to 465, there's only a problem if I'm connected to Voneus. It works fine when connected to EE.

[Mustrum]

@MartinEllis   what about port 993 ?  or was that a typo?

[MartinEllis]

Thank you but the email address and password details are identical for both. I've not changed anything or entered anything separately.