This topic

Cannot send emails from talk21.com via iPhone (but can receive)

Lottiedot — Thu, 14 Aug 2025 21:19:37 GMT

I keep getting the error message “cannot send email” password or username is incorrect (or similar sounding, I can’t remember exactly now.

I can receive emails on my iPhone but can’t send (they are stuck in my outbox).

I have deleted and uploaded the email to the iPhone (via other). It’s an old @talk21.com email. I know my passwords are corrected (tested them) Incoming settings =

server: mail.btinternet.com

Authentication: password

imap : (empty)

port: 993

This works as I receive emails.

outgoing
Host name: mail.btinternet.com

Username: my email@tall21.com

Use SSL : ON
Authentication: password

port: (I’ve tried 465 and 587)

I keep getting the message - cannot send email. Can anyone please help!

thank you

Re: Cannot send emails from talk21.com via iPhone (but can receive)

gg30340 — Thu, 14 Aug 2025 21:31:28 GMT

Are you presently a BT Broadband customer or are you paying for your email through a BT Premium email account?

If neither of the above your email account may have been downgraded to a BTMail Basic account which can not be used with an email client

See link

https://www.bt.com/help/email/bt-email-products

Are you able to log onto your email account using a web browser?

In any event the username should be formatted as user.name.t21@btinternet.com

Re: Cannot send emails from talk21.com via iPhone (but can receive)

Lottiedot — Thu, 14 Aug 2025 21:54:46 GMT

I’ve just always had a talk21.com email account. I don’t have bt broadband nor but I never have, and have always had this email and I’ve had yhid email on my iPhone(s) for years, and now I don’t know why it’s not working, hence finding this forum and asking. Thanks

Re: Cannot send emails from talk21.com via iPhone (but can receive)

licquorice — Thu, 14 Aug 2025 22:03:53 GMT

@gg30340 has just explained why it is not working. It has just taken BT a long time to downgrade your address to basic mail.

Re: Cannot send emails from talk21.com via iPhone (but can receive)

Lottiedot — Thu, 14 Aug 2025 23:23:31 GMT

Thanks. I’d just have thought it wouldn’t have worked at all then, as I can receive emails via the iPhone (just not send them) and yes I can use my emails via the browser / webmail (but its painful to use, not user friendly).

Can I just ask, so my email is example@talk21.com

But now should it be example.talk21@btinternet.com for the set up?

? (trying to remember what I saw, as now replying I’ve forgotten the exact wording).

Thanks

Re: Cannot send emails from talk21.com via iPhone (but can receive)

Andy_N — Fri, 15 Aug 2025 15:52:56 GMT

@Lottiedotwrote:
Thanks. I’d just have thought it wouldn’t have worked at all then, as I can receive emails via the iPhone (just not send them) and yes I can use my emails via the browser / webmail (but its painful to use, not user friendly).

Can I just ask, so my email is example@talk21.com
But now should it be example.talk21@btinternet.com for the set up?
? (trying to remember what I saw, as now replying I’ve forgotten the exact wording).
Thanks

Hi.

This could be a temporary glitch, so the best thing to do is nothing. (It's .t21 before the @). If you have an email stuck in the outbox, look at the initial one that failed, somehow copy it (pen/paper!) for future sending if needed, and delete it from the outbox, then try force a send.

Re: Cannot send emails from talk21.com via iPhone (but can receive)

Lottiedot — Fri, 15 Aug 2025 15:59:58 GMT

Hey,

Thank you. Im so confused thought about the .21@

so my own email is example@talk21.com

But when I set it up on the iPhone / have now been looking, they (Google) advised having (incoming / outgoing host as mail.btinternet.com

so where does the .t21@ come into play? And where do I use it and how?

Thanks

Re: Cannot send emails from talk21.com via iPhone (but can receive)

licquorice — Fri, 15 Aug 2025 16:05:04 GMT

Your email address is no longer example@talk21.com it is example.t21@btinternet.com.

The server name is mail.btinternet.com

Re: Cannot send emails from talk21.com via iPhone (but can receive)

Lottiedot — Mon, 25 Aug 2025 07:38:38 GMT

Hey thanks

I tested this out, and the email didn’t work, but sending an email (from someone else) to my actual email does work.
So this works example@talk21.com (works)

example.t21@btinternet.com doesn’t work. Wouldn’t deliver.

ao I don’t think that is my email. This has been my email for 20years so I’m trying to hold on to it - but are we now thinking that it will absolutely not work on an iPhone?
there’s nothing I can do at all?
thanks

Re: Cannot send emails from talk21.com via iPhone (but can receive)

Peter_W — Tue, 02 Sep 2025 10:06:44 GMT

Hey @Lottiedot.

I've been doing a bit of digging on this one over the last few days, and we're just trying to establish what could be the cause here.

In the meantime, have you had a chance to test the BT Email app to see if this works, too?

Or does this face the same issues you had with the iPhone mail client?

Peter

Re: Cannot send emails from talk21.com via iPhone (but can receive)

Willmouger — Tue, 02 Sep 2025 10:36:55 GMT

Hi. I hope some good advice comes as I have just reported the same problem on my iPad after a password change

Re: Cannot send emails from talk21.com via iPhone (but can receive)

Peter_W — Tue, 02 Sep 2025 10:50:28 GMT

Good morning @Willmouger 😊

Is it a Talk21 account that you're encountering this issue with, or btinternet?

Also is it using the iPhone mail client that you encounter this issue with, too?

Peter

Re: Cannot send emails from talk21.com via iPhone (but can receive)

Willmouger — Tue, 02 Sep 2025 10:55:46 GMT

Hi. It’s a btinternet.com account and I’m using the iPad Mail app configured to the btinternet send and receive server as and ports as advised in other posts