--- title: "About email deliverability in Engage" slug: "about-email-deliverability-in-engage" updated: 2026-11-10T13:58:47Z published: 2026-11-10T13:58:47Z canonical: "help.gong.io/about-email-deliverability-in-engage" --- > ## Documentation Index > Fetch the complete documentation index at: https://help.gong.io/llms.txt > Use this file to discover all available pages before exploring further. # About email deliverability in Engage > **Who can use this**: Tech admin, Business admin > > **Available on**: Gong Engage > > **Ideal for**: Sales manager, Tech admin Gong Engage sends each team member's emails through their own connected Gmail or Microsoft 365 email account. Whether those emails reach the inbox depends mostly on your company's email setup: Its authentication records, its sending reputation, and how recipients engage. Gong adds safeguards on top of that, and you control a few Engage settings that also affect delivery. ## How Engage sends email Gmail, Outlook, and other receiving mail servers check your company's records and reputation, not Gong's, when they decide where an email lands. > [!NOTE] > Note: > > Branded tracking URLs change the domain shown in tracked links only. They don't change the sending domain or create new email authentication records. Learn more about [setting up a branded tracking URL](/v1/docs/set-up-a-branded-tracking-url-for-engage-emails). ## What Gong does automatically Engage applies these safeguards to flow emails without any setup, to protect your sending reputation: - **Throttling:** Gong spaces out auto flow emails so they aren't all sent at the same moment, which mail servers can read as a bulk send. Gong looks for a 2-minute window with fewer than five scheduled emails. If the window is full, it adds a random delay of 2 to 5 minutes and tries again, up to 2 hours after the original send time. - **Bounce handling:** When a flow email bounces because the address is invalid or doesn't exist, Gong pauses the flow for that contact, marks the address as invalid, and creates a to-do for the rep to resend the email to a different address and resume the flow. ## Settings you control You configure each of these in Engage: - **Sending limits:** Cap how many flow emails are sent per sender, per company, per recipient, and per recipient domain. Learn more about [setting up email sending limits](/v1/docs/set-up-email-sending-limits-and-unsubscribe-links). - **Opt-out footers:** An opt-out link lets recipients unsubscribe instead of marking an email as spam, and some regulations require one. Learn more about [setting up email opt-out paths](/v1/docs/set-up-email-opt-out-paths). - **Email tracking:** Open and click tracking can affect deliverability. If your bounce or spam rates start rising, consider turning off open tracking in your compliance policies until they recover. Learn more about [configuring compliance settings](/v1/docs/configure-compliance-settings). ## What your IT team controls Your IT team owns the authentication and security records that receiving servers check before they accept an email: - **SPF:** Confirms that emails come from an IP address authorized to send for your domain. - **DKIM:** Adds a signature that proves the email wasn't changed in transit. - **DMARC:** Tells receiving mail servers what to do when SPF or DKIM checks fail. - **ARC (Authenticated Received Chain):** Keeps the authentication history of forwarded messages. - **PTR records:** Reverse DNS records that confirm the sending IP address matches the sending hostname. Gong doesn't provide its own SPF or DKIM records for connected-mailbox sending, so work with your IT team to check that these records are configured correctly for your sending domain. ## Domain reputation and warm-up A domain's sending reputation builds over time, so a new domain, or one returning from inactivity, needs about 30 days of gradual warm-up before receiving mail servers trust it. During warm-up, some emails may go to spam until the reputation builds. When you set up a new sending domain: - Use a domain older than six months when possible. - Avoid a domain with a poor sending history, for example one used for bulk marketing email. - Double your send volume every three or four days during warm-up rather than starting at full volume. - Keep a warmed-up backup domain ready in case your main domain is flagged. ## Monitor delivery performance Engage Analytics shows bounced deliveries, open rates, and click rates for your team's email activity, so you can spot patterns over time. To watch your domain's health outside Gong: - **Spam rate:** Use [Google Postmaster Tools](https://postmaster.google.com) to monitor your sending domain's spam rate. Google recommends keeping it below 0.10% and avoiding a sustained rate of 0.30% or higher. - **Blocklists:** If your domain or IP address is added to a blocklist, receiving servers reject email from it. Check regularly with a blocklist monitoring service, and request delisting through the blocklist provider's website if you're flagged. ## Frequently asked questions ****Gong shows an email as delivered, but the prospect didn't receive it. What happened?**** "Delivered" means Gong successfully handed the email to the team member's connected email account. It doesn't mean the email reached the inbox. The recipient's mail server may have filtered it to spam, held it for security scanning, or rejected it based on domain reputation, authentication, or content. Learn more about [troubleshooting email delivery issues](/v1/docs/troubleshoot-email-delivery-issues). ****Can a rep send from multiple domains in Engage?**** No. Each team member sends from one domain: The domain of their connected email account. Learn more about [email domains in Engage](/v1/docs/about-email-domains-in-engage). A team member who manages and configures the Gong platform and handles CRM integrations, user provisioning, permissions, and system settings. [Find my Tech admin](/v1/docs/find-your-technical-or-business-admin). A team member who manages the business entities in Gong, such as deal and forecast boards. [Find my Business admin](/v1/docs/find-your-technical-or-business-admin). Gong’s AI-driven sales engagement solution that helps sales teams prioritize, personalize, and automate outreach activities to accelerate their pipelines. Access to features depends on your [company’s plan and your assigned seat](/v1/docs/plans-and-seats). A team member who manages a team of sales reps.