Contact Groups in Outlook

[silverback]

I use Office 365 Outlook to hold email accounts from TalkTalk and Gmail. As far as I can tell, everything is working OK.
I am in the process of moving, and so need to email everyone with details of the new property, phone numbers etc. I'd like to use a contact group - because recipients can't see other email addresses - but setting one up seems very restrictive. I've exported all my contacts to a .csv file and can manipulate that to create all the people and emails that I need to contact but I can't find any way of importing all these recipients into a group. The only way to create a group seems to be to select one individual at a time from the contacts list and use Add Member - mind bogglingly slow.

Is there a way to create a group with lots of recipients in one go?

If not . . .
Suppose I put lots of email addresses in the BCC field. Is that accepted protocol, and how many would be sensible per email?
No wonder moving is regarded as so stressful.
Silverback

[HansV]

Can you hold down Ctrl or Shift to select multiple contacts, and then click Add Member?

[Leif]

If you click on 'New Contact group, and then click on 'Add Members':
    

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You get to a screen listing all your contacts.

If you go down the list, double-clicking each one you want to add, they will appear in the "Members" field at the bottom.

Does that work for you?

[Leif]

When you come to send out your email, with your group in the Bcc: field,I recommend adding your own email address in the To: field.
This should prevent the sent email being rejected by the recipient for not having a valid destination address.

[JoeP]

This worked in a test I just did using the latest Outlook 365 - New Contact Group, name the group, Click Add Members | From Outlook Contacts. Then multi-select the contacts you want using CTRL or Shift click, click the Members button in the dialog box, click OK. Add more if you wish or save the new group.

[silverback]

Perfect. Huge thanks to all.
Silverback