registered post

British  

noun

1. a Post Office service by which compensation is paid for loss or damage to mail for which a registration fee has been paid Compare recorded delivery

2. mail sent by this service

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Example Sentences

"You failed to appear in court despite notices sent by a messenger and later through registered post. You are hereby directed to appear before the court personally," the notice stated.

From BBC

Complaints ensue - formal letters are sent by registered post, threatening legal action unless Madame Joliot personally vacuums the few leaves, with her own vacuum cleaner, whenever they might fall.

From BBC

A friend let us borrow one - an original 1915 antique - and sent it registered post.

From BBC

Then she sealed the envelope, rang a bell, and told someone to despatch her letter by registered post.

From Project Gutenberg

Since you require it, I presume the case can be met if my representative in England has the form made out and sent to you by registered post.

From Project Gutenberg