Why is Gmail warning my contacts to be careful with an email from me?

Overview

Google appends warnings to emails in Gmail that its spam and safety filters believe pose a risk to Gmail users. Read on to learn why this may happen to an email sent from your Sendlane account.

In this guide

Why contacts may see a message warning them to be careful with messages from you

Contacts may see a yellow banner advising them to "be careful with this message" when Google believes the sender has maliciously spoofed a legitimate sender. Spoofing means sending a message while disguised as a legitimate sender.

This warning will only appear when accessing Gmail on desktop or via the iOS or Android Gmail apps.

How you can prevent this message in the future

The good news is that the "be careful with this message" warning overwhelmingly appears on emails sent to and from the same domain, which indicates spoofing. This means that it is highly likely the only people who will ever see this message on an email sent from your Sendlane account are internal staff with email addresses that use the same domain as your sender profile.
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