public async Task SendEmailAsync(List <string> emails, string subject, string title, string body)
{
var msg = new SendGridMessage()
{
From = new EmailAddress(SenderEmail, _senderName),
Subject = subject,
HtmlContent = _builder.CreateTemplate(title, body),
};
msg.AddTos(emails.Select(email => new EmailAddress(email)).ToList());
var client = new SendGridClient(_apiKey);
await client.SendEmailAsync(msg);
}