Remove "Sent via Retool Email" Watermark: What You Can Do

You've wired up a Retool Workflow, connected your email logic, tested everything — and then you spot it: "Sent via Retool Email" appended to every outgoing message. If you're trying to remove the "Sent via Retool Email" watermark from emails sent through Retool's native email resource, the hard truth is that you currently cannot. It's a platform-level footer that Retool adds automatically, and as of now, there is no setting to disable it. Here's what you need to know and what to do instead.

What Is the "Sent via Retool Email" Footer?

When you use Retool's built-in Email resource to send messages — typically via a Send Email block inside a Retool Workflow — Retool appends a "Sent via Retool Email" tag to the bottom of every email. This is a branding watermark added by Retool at the infrastructure level. It is not a template variable you can delete, and it does not appear in your email body editor — it gets injected automatically at send time.

This is a well-documented frustration in the Retool community. Users who have invested days setting up webhook triggers and workflow automation only discover the watermark after going live — which is far too late if you're sending customer-facing communications.

Is There a Setting to Remove It?

No. Retool has confirmed that removing the "Sent via Retool Email" footer is not currently possible and is not on the near-term product roadmap. There are no plan tiers, no workspace settings, and no query overrides that suppress it. If you're searching through the Resources panel or your Workflow block settings hoping to find a toggle — it doesn't exist.

This applies regardless of whether you're on a free, Team, or Business plan. The footer is added by Retool's shared email sending infrastructure, not by your account configuration.

Why This Matters for Customer-Facing Emails

For internal tooling — notifications to your ops team, alerts for engineers, order summaries for warehouse staff — the watermark is a minor annoyance. But if you're sending emails directly to customers (invoices, confirmations, onboarding sequences, status updates), "Sent via Retool Email" looks unprofessional and can erode trust. It also signals to recipients that your company is using third-party tooling to manage their communications, which isn't always the impression you want to make.

The Recommended Workaround: Use an SMTP Resource Instead

Retool itself recommends this fix: replace the native Email resource with an SMTP integration. This routes your emails through your own email sending service, giving you full control over headers, footers, sender reputation, and branding. Here's how to set it up:

• Step 1 — Choose an SMTP provider. Popular options include SendGrid, Mailgun, Postmark, Amazon SES, or even Google Workspace SMTP. All of them offer free tiers suitable for low-to-moderate volume.
• Step 2 — Get your SMTP credentials. From your provider's dashboard, collect your SMTP host, port (typically 587 for TLS), username, and password or API key.
• Step 3 — Add an SMTP Resource in Retool. Go to the Resources tab in your Retool instance, click Create New, and select SMTP from the resource type list. Enter your credentials and save.
• Step 4 — Update your Workflow. Open your Retool Workflow and replace any Send Email blocks that use the native Retool Email resource with a new Send Email block pointed at your new SMTP resource.
• Step 5 — Test end-to-end. Trigger a test run and verify the email arrives without any Retool branding. Check both the visible email body and the raw headers to confirm nothing unexpected is appended.

Bonus: Benefits of Using SMTP Over Retool Email

Switching to SMTP doesn't just solve the watermark problem. It also gives you:

• Custom sender domains — send from no-reply@yourcompany.com instead of a shared Retool domain
• Delivery analytics — track opens, clicks, bounces, and spam complaints via your provider's dashboard
• Better deliverability — dedicated sending IPs and proper SPF/DKIM/DMARC alignment
• HTML template control — full ownership of your email design with no injected footers

Will Retool Ever Allow Removing the Watermark?

It's possible, but there's no committed timeline. Retool has acknowledged the request internally and tagged it as a tracked feature. If this is important to your team, the best action is to upvote or comment on the original community thread to signal demand. In the meantime, the SMTP resource workaround is the production-ready solution.

Bottom Line

The "Sent via Retool Email" footer cannot be removed through any native Retool setting today. If you're sending customer-facing emails, you should migrate to an SMTP resource using a provider like SendGrid or Postmark. It takes less than 30 minutes to configure and gives you clean, fully branded email delivery with no watermarks, better analytics, and stronger deliverability. Don't waste another day on a workaround that doesn't exist — use the right tool for the job.