Roy RainfordSome of my 'sent' emails are not being delivered to the intended recipient.
My usual sending address ends in toucansurf.com and emails from this go through. However sometimes the 'From' address changes to my icloud.com address, without me noticing it has changed. Some of these emails have been received but some haven't.
I now try to remember that I must check the sending address before clicking 'Send' but I guess my Mail accounts need editing. ( Five are listed including one inactive). Am unsure how best to edit.
Using iMac OS v10.13.6 High Sierra and Mail v11.5. TalkTalk are my Provider but they don't offer much support on Macs.