ZeroSpams

Email marketing and CRM integration

When your email platform and your CRM don’t talk, lists go out of date, unsubscribed people get emailed again, and sales can’t see who read what. Connecting them fixes all three.

Updated · 2 min read · By the ZeroSpams team

The short answer

Email marketing integration connects your email platform with your CRM, website forms, shop or booking system: new contacts flow in automatically, segments update from CRM data, unsubscribes sync both ways, and opens, clicks and replies are recorded against each customer so sales can follow up.

What’s included

  • Contact sync between CRM and email platform, both ways where needed.
  • Unsubscribes and bounces synced everywhere, so nobody is emailed after opting out.
  • Segments built from CRM fields: stage, industry, location, last purchase.
  • Website and form connections, so new enquiries join the right list.
  • Activity: opens, clicks and replies recorded on each contact.
  • A data map of what flows where.

How we do it

  1. Map your systems and data.
  2. Choose native connectors or a custom integration.
  3. Set up the sync and field mapping.
  4. Test with real records.
  5. Monitor the first weeks for gaps.

The unsubscribe problem

The most damaging integration gap is an unsubscribe that doesn’t sync: someone opts out in the email platform, then a sales tool emails them anyway. Besides annoying people, it drives spam complaints, which Gmail watches closely [1]. We make sure opt-outs reach every system.

Common questions

Which CRMs do you work with?

Most CRMs with a standard connection or API; we confirm yours during the free check.

Can website enquiries go straight into the CRM?

Yes, and they can join the right email list at the same time.

What if there’s no ready-made connector?

We build a custom integration through the systems’ APIs.

Sources

Numbers in this guide come from these studies and publications. Links open the original.

  1. Email sender guidelines FAQGoogle Workspace Admin Help (Gmail)Requirements for senders of 5,000+ messages a day to Gmail since February 2024; stricter enforcement, including rejections, since November 2025.