SMTP Protocol: The SMTP (Simple Mail Transfer Protocol) protocol is used by the Mail Transfer Agent (MTA) to deliver your eMail to the recipient's mail server. The SMTP protocol can only be used to send emails, not to receive them.
In general, you will be able to hear your baby's heartbeat when you are about 8 weeks pregnant using an obstetrics ultrasound. Or you may be able to hear the baby's heartbeat during regular prenatal care visit at 10 weeks, or more commonly at 12 weeks, with a fetal Doppler. The new fetal care technologies now allow for a much more specific time frame. We now know that your baby's heart begins to beat around 6 weeks after conception.
Studies have found that a fetus can hear sounds, though muffled, at as early as 20 weeks and by the third trimester their hearing is intact. Sonograms show that your baby may turn their head in response to a noise. According to the American Academy of Pediatrics (AAP), the whooshing sound your baby hears in your womb is, to them, louder than a vacuum cleaner!