Hello, Simplelists - Andy Beverley via mailop wrote on 28.12.24 at 09:56:
You could also use a professional service if paying a nominal charge is an option. I can recommend isipp.com - their fees for such a check are very reasonable.
I blogged a while ago about all the services I use - but keep in mind I'm just a really small operator, the list is anything but conclusive: https://effenberger.org/en/howtos/return-to-sender-2/
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