Connecting your sending email.

You connect either Gmail or Microsoft 365 — only one is active at a time. The Email Provider card at Settings → Integrations handles both.

Prerequisite — mailing address first

Your business mailing address must be saved in Settings before any send works. CASL §6(2) requires it, and Tenlo blocks the send at render-time if it’s missing (you’ll see a clear error rather than a non-compliant email going out). Placeholder addresses (TBD, 123 Main St, etc.) are rejected. See Quick start Step 1.

Connecting Gmail

Settings → Integrations → Email Provider → Connect Gmail.
Sign in with the account you want to send from.
Accept permissions — send mail, read mail, modify (for reply detection).
Done. You’re now the active sender.

Use a warmed-up business email

Brand-new mailboxes hit Gmail’s spam filters hard. If your domain is fresh, do a slow ramp (5–10 sends/day) for the first 2 weeks before scaling. See Compliance → Domain warmup.

Connecting Microsoft 365

Settings → Integrations → Email Provider → Connect Microsoft 365.
Sign in with your work or school account (org-managed) or personal Microsoft account.
Accept permissions — read mail, send mail, set up reply notifications.
Done.

Microsoft 365 connections include automatic reply ingestion via Graph webhooks (renewed daily) — same downstream classification flow as Gmail. See Replies & classification.

Switching providers

If you switch from Gmail to Microsoft (or vice versa), the dashboard shows a confirmation modal:

“Disconnect Gmail before connecting Microsoft 365?”

Confirming disconnects the old provider cleanly. Both can technically be connected at once, but only the one matching your active sender setting actually sends.

Disconnecting

Click Disconnect on the provider’s row. Tokens are wiped; in-flight emails for that provider stop. Sequences pause until you reconnect (or switch).

Note

Disconnecting an email provider doesn’t delete your prospects or sequences — it just stops sends. Disconnecting HubSpot or Pipedrive is a different story: those also remove the prospects you imported from that platform. See CASL, suppressions & data handling.