The union and Royal Mail are scheduled to meet again on Friday to "seek a way forward that avoids industrial action", Mr Booth added.
Ending Saturday delivery "would be particularly harmful to small businesses, rural communities, the elderly, the disabled and others who depend on Saturday delivery for commerce and communication, " said Fredric Rolando, president of the National Association of Letter Carriers, a union representing many mail carriers.
They first walked out for 24 hours on 10 December after talks between Royal Mail and union officials broke down.
Ending Saturday delivery "would be particularly harmful to small businesses, rural communities, the elderly, the disabled and others who depend on Saturday delivery for commerce and communication, " said Fredric Rolando, president of the National Association of Letter Carriers, a union that represents many mail carriers.
"While this agreement is neither perfect nor perhaps all that we deserve for the countless hours of hard work and sacrifice, our strike has been a success, " Writers Guild West president Patric Verrone and WGA East president Michael Winship said in an e-mail sent to union members early Saturday.
Talks between the Communication Workers Union (CWU) and Royal Mail have so far proven unsuccessful.
Royal Mail has insisted it needs to modernise to survive as a business in the highly competitive mail industry, while union leaders have argued that its plans have no regard for its employees.
Worldwide mail volumes are expected to grow less than 1% a year through 2008, says the Universal Postal Union, which oversees the globe's flow of mail.
Meanwhile, Business Secretary Lord Mandelson told the BBC's The Politics Show that he denied any suggestion by the union that he had orchestrated the Royal Mail's handling of the dispute.
Young Democrats at the University of Nebraska-Lincoln's student union stuck address labels to stacks of mail flyers, while, one floor up, College Republicans brainstormed on how to increase interest in the November 7 elections.
Royal Mail said it consulted with the union before its plans were announced.
Thousands of items of mail including Mayoral candidate information are remaining undelivered at a Royal Mail depot in Bristol, a union has said.
In November, 1861, Seward faced his first test when Charles Wilkes, an intemperate Union captain, fired upon an unarmed British mail ship, the R.
"Royal Mail remains ready to meet the union leadership yet again at any time to explain our position and the reality of the open marketplace in which we now operate, " the company said.
The Communication Workers Union (CWU) said it had informed Royal Mail of its intention to take industrial action on Monday 10 December.
The disruption has caused a backlog of mail estimated to be between four (says Royal Mail) and 20 million (says union) pieces, and it's the latest fracture in the bond between postie and public.
But the workers' union is calling for "energetic intervention" from Royal Mail management nationally to resolve the deadlock.
In a statement, Royal Mail said it was in discussion with the union, but the implementation of the operational changes was a vital part of the modernisation of its business.
Previously, a document leaked to BBC's Newsnight programme appeared to show Royal Mail digging in for a bitter battle against the union.
The union says the action reflects its growing frustration with the Royal Mail for its failure to take worker demands for job protection and increased pay "seriously".
She made the comments to the Communication Workers Union's annual conference, which she is the first Royal Mail chief executive to address.
BBC: Royal Mail faces a spiral of decline, chief executive says
The war of words flared as Royal Mail boss Adam Crozier rubbished the main postal workers' union's suggestion that the firm treats its staff as "slaves".
Dated 24 September 2009 and marked "In strictest confidence", the document says that "through the dispute" the Royal Mail will "deliver the necessary 2009 changes with or without union engagement".
The Royal Mail worked with the Foreign and Commonwealth Office and the Universal Postal Union in Switzerland to provide the postcode.
The breakdown of talks also led to the union warning that a further week of "continuous disruption" to all Royal Mail services would begin next Monday if the dispute was not resolved.
Meanwhile, the journalist who took Casburn's call has said he gave evidence in the trial after taking advice from a union representative "only to confirm" that he had written an e-mail to superiors outlining the conversation.
The AFL-CIO says its campaign will include 70 million phone calls to union households in key presidential and congressional battleground areas, as well as 25 million mail pieces.
The Communication Workers Union (CWU) said the workforce would have to sort their rounds in Canterbury before delivering the mail in Whitstable.
According to a union spokesman, postal workers delivering to the BS4 and BS14 postcode areas were told to "take whatever mail they had at 0930 and leave the rest".
Jean Pascal Zanders, a chemical weapons expert and a senior research fellow for the European Union Institute for Security Studies, cast doubt on the use of chlorine, saying in an e-mail that one small rocket couldn't deliver the quantity needed to kill 25 people.
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