Some of the best courier services include XYZ, ABC, and 123, known for their reliability and speed.

Delivery times vary but typically range from 3 to 10 business days depending on the service chosen.

You will need a commercial invoice, packing list, and any specific documents required by Bulgaria customs.

While not mandatory, shipping insurance is recommended for valuable documents to protect against loss.

Yes, most courier services provide tracking numbers so you can monitor your shipment's progress.

Costs can vary based on weight, dimensions, and speed of delivery; it's best to get quotes from several couriers.

Yes, certain documents may be restricted; it's advisable to check Bulgaria's customs regulations before shipping.

Use sturdy envelopes or boxes, and ensure that documents are protected against bending or moisture.

Choose a reputable courier service, properly freight your documents, and utilize tracking and insurance options.

Yes, electronic files can be sent via email or secure file transfer services, which are often more efficient.