To ask if this is an indication that some parcels may have been lost

[User1010]

I posted 7 parcels via Royal Mail second class. Three of the parcels have arrived however the rest haven’t. As I posted all 7 at the same time would they all arrive on the same day?

All going to the same place, or different locations?
If all the same place I'd expect them all to arrive together, but wouldn't worry about it until the next day if they still hadn't arrived.

Depends where you were sending them too if all the same place I'd still give it a day or two as you don't know if the other 4 just missed a cut of point in the processing.

It's actually illegal for Royal Mail not to deliver them all on the same day. Contact your MP.

Even if they're all in the UK, it can sometimes take an extra day to reach some of the Scottish islands.

How long has it been?

They only aim to get 98% of second class mail there within three days... I'd be more likely to worry if they're still missing after a few more days.

Thank you for the replies. Only one is still yet to be delivered but tracking shows they have not even made an attempt? Does the tracking always update?

Second class isn't a fully tracked service. You will only see once it has been delivered (or collected from the delivery office if no one was in when the postie tried to deliver).

You can ask for the tracking to be updated.

Sometimes they are delivered and not updated, or it might be at our delivery office where the postie saves them up and delivers all on the same day.