SendGrid Event Types

SendGrid events are tracked with specific event type IDs in SendPost, allowing you to distinguish between native SendPost events and SendGrid events.

Event Type	ID	Description
SG Sent	14	Email accepted by SendGrid for delivery
SG Delivered	15	Email successfully delivered to recipient
SG Deferred	16	Temporary delivery delay (SendGrid will retry)
SG Dropped	17	Email dropped by SendGrid (invalid address, etc.)
SG Hard Bounced	18	Permanent delivery failure
SG Soft Bounced	19	Temporary delivery failure (blocked)
SG Opened	20	Recipient opened the email
SG Clicked	21	Recipient clicked a link
SG Spam Report	22	Recipient marked email as spam
SG Unsubscribe	23	Recipient unsubscribed
SG Group Unsubscribe	24	Recipient unsubscribed from group
SG Group Resubscribe	25	Recipient resubscribed to group

Bounce Type Details

SendGrid categorizes bounces into two types:

Hard Bounce (ID: 18)

Permanent failure (invalid email, domain doesn’t exist). These addresses should be removed from your list.

Soft Bounce (ID: 19)

Temporary failure (mailbox full, temporarily blocked). SendGrid may retry these automatically. Consider these as temporary issues.

Each SendGrid event includes: