Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Thanks - mailgun works absolutely great!
BTW there is a good guide to mailgun forwarding here:
https://christopher.su/2015/wildcard-email-forwarding/
I initially had a problem where the mailgun IP I was assigned was blocked by outlook (presumably someone reported it as a spam relay).
I raised a ticket with mailgun and they moved me to another IP immediately and now all is good.
I periodically check for any forwarding issues, and also set up a IFTTT webhook to alert me to another email address on any permanent forwarding failures.
Also if you only need incoming mail redirected to outlook you can use this free service:
Personally I didnt try it but it looks promising...