Quick tipFix itMarketing HubSales Hub

'There was an issue sending an email to this contact'

Not sent is different from a bounce.

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Time
2 min · Intermediate
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Short answer

HubSpot's KB: a Not sent email never leaves HubSpot, unlike a bounce; HubSpot blocks sends likely to fail to protect your reputation. Reasons include inbox authentication failed (reconnect), a provider send limit, and recipient looks invalid after earlier bounces.

1. In HubSpot

The relevant screen in my demo portal.

Contact record with the About section and right sidebar cards
The record (1).

2. Worth knowing

Read the specific reason first; each one has a different fix.

3. Related

Bounces and send limits.

Sources

New field notes by email

One email when a new article publishes.

Still stuck?

If this did not fix it, the problem is probably specific to your setup. Book a call and we will look at it together.

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