A new delivery model is being introduced by Royal Mail as part of a pilot scheme.
Residents in Pershore are among those taking part in the trial, which will see changes to the frequency of second-class post deliveries.
The scheme is designed to address rising delivery costs and a long-term decline in letter volumes.
West Worcestershire MP Dame Harriett Baldwin, who was briefed on the pilot in July, said: “Scores of local people have complained to me about a failing mail service that meant they missed important hospital appointment reminders and letters from the bank.
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“I have repeatedly urged Ministers to get to grips with this problem and Royal Mail has already been fined by Ofcom for missing its delivery targets.
“The cost of stamps continues to go up but now Royal Mail is reducing its second-class deliveries, ostensibly to provide a more consistent service.
“Pershore is one of the first delivery offices to trial the new system and I will be monitoring the results closely.
“Anyone in and around Pershore who sees a change should let me know their feedback.”
Royal Mail has identified 240 delivery offices to take part in the initial rollout of the pilot.
The company said the changes are necessary to balance rising operational costs with the long-term decline in letter volumes and a growing number of delivery addresses.
The scheme comes amid ongoing complaints about irregular delivery patterns and missed correspondence.
Residents are encouraged to contact Dame Harriett’s office with any feedback on the changes.
