Is GainTools CSV to vCard Converter reliable for large contact files?

I've utilized GainTools CSV to vCard Converter for converting from CSV to VCF files, and I've done this conversion on very large contact lists, and it performed fabulously. It was able to maintain every field name, phone number, and email without missing any data in between the process. You can convert CSV to VCF in batch files at once, which saves you a lot of time. This software is completely compatible with Outlook, Gmail, iPhone, and Android. Moreover even non-technical users can handle the management of contacts due to its user-friendly interface. GainTools even had a free demo for me to try the software before I paid for it! Overall, this is a great CSV to vCard converter that works quickly and accurately for either professional or personal use!