Postal staff in Ballinasloe, Co Galway, staged an unofficial demonstration early yesterday as part of the continuing dispute over sorting of mail.
The three-hour protest, beginning at 5 a.m., involved about 18 sub-postmasters, and resulted in delivery delays in the Ballinasloe area.
However, postal services are resuming in east Mayo, following protest action by staff at sub-post offices in Swinford, Kiltimagh and Charlestown earlier this week.
The 11 staff in Co Mayo had refused to travel to the central sorting office at Claremorris to collect and sort the mail for their area.
The action is part of a campaign by rural postmasters for a pay rise in their An Post contracts.
Mr John Kane of the Irish Postmasters' Union said 540 offices attached to the sub-office network would close today and on Monday as part of the protest. Talks are due to begin next Wednesday.
Fifteen postmasters protested outside a temporary sorting office in Belmullet, Co Mayo, yesterday. Some postmasters have health and safety concerns over the new office, where two coffins are reportedly being used as supports for a bench to hold mail.
The postmasters held placards as postmen from the area entered the temporary office. Four out of six postmen passed the picket line.
Homes in parts of Co Waterford were left without post yesterday when nine An Post delivery staff based in Tramore staged a sit-in over the sorting of mail. Talks last night brought a resolution.