Hi Jillian :D Thanks for your response. Unfortunately it didn't work. My email address did show normal whenever i sent an email directly from my outlook inbox. Only when using Calendly it was being weird.
I have been in contact with Outlook. According to them the problem was that Calendly connected with my outlook email address, while this isn't my original domain (which is the webmail from my website provider). If that happens Outlook creates an emailaddress with numbers.
I have deleted my Calendly account, created a new one and then did not connect my calendar (probably it would have been enough to disconnect my calendar on Calendly). Then the email address was showing fine. Lateron i did connect my Outlook calendar as i don't have any other option.
Currently this is working (so correct sender email). Let's hope it continues. Fingers crossed.
Anyone with the same construction that is working well or also experiencing problems?
- original mail account at website provider/host
- connected to outlook calendar
Many thanks!