Anybody had their mail held in U.S. for 3+ months when traveling? Hoping for some FT advice since I'm sure someone has done this and has either success or horror stories to tell.

Friends from San Francisco will be spending summer in Europe but this year cannot forward mail to other family members nor are their neighbors or friends available to gather mail on a regular basis.

Perhaps I'm wrong but I assume USPS rental boxes would not hold 3-months worth of mail, and USPS Mail Hold service is out as it has max limit of 30 days. Have tried some local Postal Connection companies, and they are not offering such a service.

Some online sites offer a variety of these services--a few even include scanning addressed side of mail pieces with ability of traveler to have certain pieces forwarded to them. These are ones I noticed:

USAbox
Bongo Intl
Earth Class

Does anyone have experience with these? Any others? Or have any ideas on how better to handle this? This is one more planning headache they could do without. Thanks to all.