Until recently, there were situations where you needed to provide a landline number instead of a mobile number for certain applications. The rationale was that mobile numbers were considered less trustworthy.
The same scrutiny applies to company phone numbers. Even if a company’s website appears reputable and large, having a phone number starting with 090 might raise concerns. This perception might still hold true today.
A similar principle applies to email addresses.
Initially, even if a company emphasizes its size and reputation, using a free email address from providers like Gmail can raise suspicions. Some applications and inquiry forms may specify “company email only.” By using an email address with the company’s domain, one can gather certain information by checking the domain’s registration date and server details.
In this context, having a dedicated domain for your company is highly important.
