public async Task SendChangeEmailAlreadyExistsEmailAsync(string fromEmail, string toEmail)
{
var message = CreateDefaultMessage(ChangeEmailAlreadyExistsTemplateId);
message.Subject = "Your Email Change";
message.AddTo(toEmail);
message.AddSubstitution("{{fromEmail}}", new List<string> { fromEmail });
message.AddSubstitution("{{toEmail}}", new List<string> { toEmail });
message.SetCategories(new List<string> { AdministrativeCategoryName, "Change Email Alrady Exists" });
await _web.DeliverAsync(message);
}