First class post: how long to arrive?

If I post first class monday what day will it arrive?

If I post first class monday what day will it arrive?

Whenever the postman get round to it.

There are zero guarantees that it will in fact get there at all!

it should take 1-2 days but due to the postal strikes recently there is a big back log so it would probably take much longer.

Just to add a depressing commentary. I've got a mail order business and I'm finding that (before the strike) most post was taking 3 to 5 days. Although, I've found some letters have bizarrely got there next day.

So there's really no rhyme nor reason to it! But barring strikes, I'd think a letter would get there by Wednesday. If it's really important, send it next day delivery.

Or use parcel force.

The post has been really strange this last week.

Someone posted me something on Tuesday and it arrive on Thursday - second class!