The post office in Stamford town centre will be open longer in the run-up to Christmas.
The branch in All Saints Place is open from 8.30am to 6pm Monday to Saturday until Saturday, December 22.
This branch will be the only one in the Mercury area with extended opening hours.
The last recommended posting dates are Thursday, December 13, for standard and mail order parcels in the UK, Tuesday, December 18, for second class and recorded signed for post in the UK and Thursday, December 20, for first class and recorded signed for post in the UK.
The last posting date for special delivery with Saturday guaranteed is on Friday, December 21, and special delivery is Saturday, December 22. The last posting date for international airmail for Canada, Eastern Europe and USA is on Monday and for Western Europe is on Wednesday.