Do royal mail deliver post within south ireland

Royal Mail, the UK's postal service, does not deliver post within the Republic of Ireland (South Ireland). This is because the Republic of Ireland is a separate country with its own postal service, An Post.

However, Royal Mail does have a reciprocal agreement with An Post, which allows for the exchange of mail between the two countries. This means that if you send a letter or parcel from the UK to the Republic of Ireland, it will be handed over to An Post for delivery.

Similarly, if you send a letter or parcel from the Republic of Ireland to the UK, it will be handed over to Royal Mail for delivery.

It's worth noting that there are some exceptions to this rule. For example, if you are sending a parcel to Northern Ireland (which is part of the UK), it will be delivered by Royal Mail. Similarly, if you are sending a parcel to the Channel Islands or the Isle of Man (which are Crown dependencies but not part of the UK), it will also be delivered by Royal Mail.

In general, it's best to check with Royal Mail or An Post for specific information on sending mail between the UK and the Republic of Ireland.