Gmail SMTP server

G Suite SMTP relay (recommended) Gmail SMTP server Restricted Gmail SMTP server
Sending limits
A registered G Suite user can’t relay messages to more than 10,000 recipients per day. For full SMTP relay limits, see Sending limits for the SMTP relay service. 2,000 Messages per day. See Gmail sending limits. Per user receiving limits apply. This option restricts sending messages to Gmail or G Suite users only.
Anti-spam filters
Suspicious emails may be filtered or rejected.
Fully qualified domain name of SMTP service
Configuration options
  • Options: Port 25, 465, or 587
  • Secure Socket Layer (SSL)/Transport Layer Security (TLS) protocols.
  • One or more static IP addresses are required.
  • Port 465 (SSLrequired)
  • Port 587 (TLS required)
  • Dynamic IPs allowed
  • Port 25
  • TLS not required
  • Dynamic IPs allowed
  • Mail can only be sent to Gmail or G Suite users.
Authentication requirements
IP address provides authentication. Your full Gmail or G Suite email address is required for authentication. None

See also: