when I write a new email, the contact suggestion doesn't appear.

[Rumuel]

I changed my computer and imported the emails, but when I go to write a new message in Outlook it doesn't suggest the emails I've exchanged messages with

[#2]

@Rumuel Happy Workday to you.

You did not mention which Outlook application you are using. 

However, there are several Microsoft posts that may be helpful to you.

 https://docs.microsoft.com/en-us/outlook/troubleshoot/contacts/information-about-the-outlook-autocom...

https://docs.microsoft.com/en-us/outlook/troubleshoot/contacts/autocomplete-not-working-correctly-in... 

ps. If this post was helpful to you, please Like or select the best response.  Thank you in advance.