E-mail is probably one of the most convenient and easiest ways for us to communicate, however, it is not a secure means of sending information. You should avoid sending sensitive data or information (i.e. a w9 that has your social security number of EIN on it) in an email.
Backup tax withholding rules require a payer to withhold tax from certain payments. Backup withholding rules may apply if someone fails to provide a correct tax ID info.
There is a QuickBooks® Online integration available through getW9.tax, which helps users save time, money & headaches in getting Form W-9s from their vendors, suppliers, contractors, etc.
If you use independent contractors to perform services for your business or your rental that is a trade or business, for each individual whom you pay $600 or more for the year, you are required to issue the service provider and the IRS a Form 1099-NEC after the end of the year, to avoid losing the deduction for their labor and expenses.