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Re:Can I Email: ‘Can I Use’ for email by lhorie on Thursday September 12, 2019 @10:32AM (#20951887)
IIRC CampaignMonitor has had a pretty good resource for many years: https://www.campaignmonitor.com/css/
Re:Can I Email: ‘Can I Use’ for email by ivanhoe on Thursday September 12, 2019 @10:57AM (#20952189)
yes, them and Email on Acid were the best sources on what's supported where.