IP Warmup
IP warming is the practice of gradually increasing the volume of mail sent with a dedicated IP address according to a predetermined schedule. This gradual process helps to establish a reputation with ISPs (Internet Service Providers) as a legitimate email sender.
SendGrid can automatically warm up dedicated IP addresses by limiting the amount of mail that can be sent through them per hour. The limit determined by how long the IP address has been warming up.
See the warmup schedule to learn how SendGrid limits your email traffic for IPs in warmup.
You can also choose to use Twilio SendGrid's automated IP warmup for any of your IPs from the "IP Addresses" settings menu in the Twilio SendGrid App.
Start warming up an IP address
POST /v3/ips/warmup
Base url: https://api.sendgrid.com
This endpoint allows you to put an IP address into warmup mode.
Authentication
- API Key
Headers
Request Body
The IP address that you want to begin warming up.
{
"ip": "0.0.0.0"
}Responses
The IP address.
A Unix timestamp indicating when the IP address entered warmup mode.
[
{
"ip": "0.0.0.0",
"start_date": 1409616000
}
]The errors that were encountered.
A message explaining why the IP couldn't entered into warmup mode.
Need some help?
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Running into a coding hurdle? Lean on the wisdom of the crowd by browsing the SendGrid tag on Stack Overflow or visiting Twilio's Stack Overflow Collective.
