Attio email open tracking: how to see who opened and clicked your newsletters

You keep your contacts in Attio. You send your newsletter from MailerLite or Brevo. The email tool knows who opened and clicked. Attio doesn't. So when a sales call comes up, nobody can see that this person clicked your pricing link last week.

This guide explains what Attio tracks on its own, then the ways to get open and click data onto your Attio records. Free ones first.

What Attio tracks on its own

Less than many people expect.

Open tracking in Attio only works if you send from Microsoft 365. Attio's help says it works for single and mass sends, not for sequences, and only for emails to one person. If your team uses Gmail, Attio doesn't track opens.
Sequence metrics were switched off. In Attio's community forum (September 2026), Attio staff said they turned off sequence open metrics because Gmail was flagging them as spam, and that there were "no immediate plans" to bring them back.
Attio's Mailchimp app only adds people to an audience. It has an "Add member to audience" workflow block. It doesn't bring opens or clicks back.

None of this covers newsletters you send from MailerLite or Brevo. That data stays in those tools unless you move it.

What changed in November 2026: Outfunnel and Attio

Many Attio users used Outfunnel for this. Outfunnel's help centre (September 2026) says it is ending support for CRMs other than Pipedrive, and that all those syncs stopped on 6 November 2026. Its suggestion was to move to a native integration or to Zapier. Outfunnel's own pages for Attio with MailerLite and Brevo had listed engagement sync as "coming soon".

If your Outfunnel sync has stopped, the options below are what's left.

A warning about open counts first

Opens are less reliable than they look. Apple Mail Privacy Protection can load emails automatically, which counts as an open even if nobody read it. Brevo now counts these opens by default and lets you leave them out. Mailchimp suggests relying more on clicks.

So whatever you choose, give clicks more weight than opens when you decide who to call.

Option 1: Look it up in your email tool (free)

The simplest way: when you need to know about one person, look them up in MailerLite or Brevo. Both show each subscriber's activity.

Good for: a small list, or the odd check before a call.

Watch out for: nothing is in Attio. You can't filter, sort or build a list of "people who clicked this month". Your team has to remember to look.

Option 2: Export and import by CSV (free, manual)

Attio can update existing people from a CSV file. It matches people on email address, so it updates the record you already have instead of creating a new one.

In your email tool, get a list of who opened or clicked a campaign, with their email address, as a CSV file.
In Attio, make an attribute for what you want to store. For example, "Last campaign clicked" (text) and "Clicked on" (date).
Go to People, click Import / Export in the top right, then Import CSV.
Map the email column to Email addresses, and your other columns to the new attributes.
Check the preview, then start the import.

Attio warns about one thing: for attributes that can hold several values, imported values are added to the existing ones, not swapped. Use single-value attributes for "last clicked" style data.

Good for: a monthly snapshot, or a one-off clean-up.

Watch out for: it's out of date by the next send. Someone has to do it after every campaign.

Option 3: Zapier (paid, DIY)

Zapier can move each open or click into Attio.

MailerLite triggers on Zapier include Subscriber Opened Campaign, Subscriber Clicked Campaign Link and Unsubscribed.
Brevo triggers include Email Opened and Link Clicked. Brevo says its Zapier app is free for Brevo customers. You still pay for Zapier.
On the Attio side, Zapier can find a person and update their record.

A common setup is one zap for clicks: when a subscriber clicks a link, find the person in Attio by email and update "Last email clicked" with today's date.

Good for: someone in the team who likes building automations and will look after them.

Watch out for:

Task counts. Every open is a task. A newsletter to 5,000 people can use thousands of tasks in a day. Zapier's Free plan includes 100 tasks a month. Many people track clicks only, to keep the bill down.
Counting. Zapier can set "last clicked", but keeping a running total of opens needs extra steps.
Upkeep. If someone renames an attribute in Attio, the zap breaks quietly.

Option 4: Webhooks and your own code

Both email tools can send events to a web address you control. MailerLite has campaign.open and campaign.click webhooks (they need to be set as batchable). Brevo's marketing webhooks include Opened, Clicked, Unsubscribe and Proxy Open (Brevo's label for automatic opens such as Apple's). A developer can catch these and write them to Attio through Attio's API.

Good for: teams with a developer and a reason to own it.

Watch out for: someone has to host it, keep it running, and fix it when an API changes.

Option 5: Email Engagement Sync (we made this one)

We built Email Engagement Sync because the Outfunnel route closed and the DIY ways need upkeep. We're not neutral, so here's exactly what it does.

It connects Attio with MailerLite or Brevo and writes opens, clicks and unsubscribes back to Attio.
It adds six attributes to your people: Email opens, Email clicks, Last email opened, Last email clicked, Email marketing status and Last email campaign.
You can then filter and sort in Attio, for example "clicked in the last 14 days".

Price: £29 a month for up to 5,000 contacts, or £59 for up to 25,000, with a 14-day free trial.

Status: Email Engagement Sync is waiting for Attio App Store approval. You can't install it from the App Store yet. Until then, you can ask to try it early from the Email Engagement Sync page.

Which should you choose?

A small list, the odd check before a call: look people up in your email tool.
A monthly view is enough: export from your email tool and import into Attio by CSV.
You like building automations: Zapier, tracking clicks only.
You have a developer: webhooks and the Attio API.
You want opens and clicks on every Attio record without upkeep: Email Engagement Sync.

FAQ

Does Attio track email opens? Only for emails sent from Microsoft 365, and only for single and mass sends to one person. Not for Gmail, and not for sequences.

Does Attio integrate with MailerLite or Brevo? Not with a built-in engagement sync. You can connect them through Zapier, your own code, or an app.

My Outfunnel sync to Attio stopped. Why? Outfunnel says it ended support for CRMs other than Pipedrive, and syncs stopped on 6 November 2026.

Should I trust open counts? Treat them as a rough guide. Apple Mail Privacy Protection can create opens nobody made. Clicks are a better sign of interest.

Sources

Checked 9 November 2026.