Hey Saria, It seems this is a Prospeo issue with not being able to find valid MX records for the specific domain. Here's some info from Prospeo about this. I noticed you ran other email enrichments which is what I would have recommended to check source emails for domains with that error. Merge fields looks to be working. I updated the column type to email. Let me know if you still don't see all the emails in one field in your table. For Apollo: There's a limit (200 times per minute) of API calls allowed (see screenshot below). The best option for now is to manually queue them up again. Let me know if this helps!