Will letter get posted without stamp and return ADRESS

Title

Do you mean will they deliver it? The person you've sent it to will have to pay the postage plus an additional fee.

Oh shoot

How do I undo it? Do I send royalmail an email or something

You can't, (unless you handed it in at a post office and are lucky enough that it hasn't gone out yet). You'll have to wait for them to process it and drop the recipient a card asking for missing postage.

Ughh im such an idiot!! I was very emotional when I wrote it and Ive posted it to an ex friend and its just so embarrassing and shes gonna get soo mad now esp if she has to pay a fee bc of me fs

Could drop them a text or email to let them know it's coming and to apologise.

Title

Return address - Yes.

Stamp - No.

She ended our friendship recently and is still mad at me

It’s not a very sincere apology if you make them pay for postage.

Ahahahahha it wasnt even an apology

You wrote a letter to someone who is mad at you and didn’t include an apology?

Ive already apologised Loads and tried sorting it but she doesn’t want to, but she told some girl something that I had only told her so i got really angry and just sad and wrote a letter, I wasn’t meant to send it her , it was just in the heat of the moment

So theyre not gonna deliver it??

Well, fingers crossed your ex-friend doesn’t pay the fee to receive the letter.

There's no need for a return address but without a stamp they will probably put a card through her door saying there's a letter to collect at the sorting office with a fee to pay of the cost of a stamp + an admin fee (about £1 last time it happened to me a few years ago). If you tell her she can just not bother to collect it and so avoid paying the fee.

So theyre not gonna deliver it??