Hello @MauriceA2 ,
The best file format for importing contacts, and typically most readily available in other programs, is a CSV fie type. The accepted contact file formats are:
I'd also recommend going through this article, which covers how you can best format your file to avoid common import issues.
Support Tips
"There's a multitude of ways to engage your audience through us using your social platforms - via ads, social post metrics, email links, and more! " - Will
See ArticleSupport Tips
"Target your most engaged contacts by creating a segment. Create a special offer or show your appreciation!" - Caitlin
See ArticleSupport Tips
"Greet new contacts with one or more automated Welcome Emails depending on their interests or your business goals." - Nick
See Article