It might be you - not them
Have a look and see what your Plain Text Settings are in Mail Sending Format
OE > Tools > Options > Send tab > Mail Sending Format > Plain Text Settings
Post back on here with settings you are using.
Surface Pro 5 News - release date, UK price, features, specs
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Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.