Email Address Verification ReceiptMate
Capital Letters In Email Address. However, some do differentiate between upper and lower case characters. Web most smtp servers are fine with uppercase characters.
Web most smtp servers are fine with uppercase characters. However, some do differentiate between upper and lower case characters.
However, some do differentiate between upper and lower case characters. However, some do differentiate between upper and lower case characters. Web most smtp servers are fine with uppercase characters.
