Chapter 1 of 6 · Why your list affects your limit
About this video
This video uses sample data, not real Mixmax data. BillionVerify is not affiliated with or endorsed by Mixmax. File verification needs a paid account.
Video transcript
Why your list affects your limit
Mixmax sends through your own Google account, and Google decides how much that account can send. Your list quality is part of that decision. That comes from Mixmax's own guide to Gmail limits. Bounce rate is the first factor it names. And the limit covers the whole account. One-off emails count, not only sequences. Once you reach it, Google can stop new sends for up to 24 hours. On Outlook? Mixmax works there too, and the list work below is the same. The limits we're describing are Google's. Mixmax's beta deliverability check reviews your emails, settings and domain authentication. Its FAQ names what else counts. So the addresses are a separate job.
Verify the list
Upload the CSV to File List Verify. It runs in the background, so your inbox stays free. Then read the breakdown. These are sample lists, not Mixmax data. Valid joins your main sequence. Catch-all goes in a smaller one. Role needs words for a shared inbox. Unknown waits. Invalid and disposable never go in. Export each group as its own file.
Upload to Mixmax
The address column must be called email, in any case. A name column sets the To field. Headers can't have periods or special characters, but underscores are fine. Drop our verification columns, you won't need them. Save as UTF-8, or apostrophes can come out garbled. And add your variables to the sequence first, so they're ready as columns. Uploading doesn't send anything. Recipients sit at Added, not activated, until you click Activate Recipients. That's your last look at the list.
Read the bounces
After launch, a hard bounce exits the sequence on its own. After a soft bounce, later stages keep going. The third kind isn't about the address at all. When Google refuses a send because you hit your limit, Mixmax marks it as bounced. So don't add those people to your suppression list. The limit usually lifts within 24 hours, and then you can resend. For the real ones, open the sequence's Recipients tab and filter by status. Exited, Bounced means the email hard bounced. Those are the addresses to suppress. Admins can also block a whole domain with the Unsubscribed domains list. It covers the Dashboard, Salesforce, Rules and the API. People added through Gmail aren't removed, and active recipients stay in.
What it costs
For us, a result costs one credit whether it's valid, invalid, catch-all or role. Unknown, bad syntax and disposable cost nothing. You'll need a paid account to upload files, and any credit purchase unlocks that.
Get started free
20 free credits every day you use your account, up to 600 a month. No credit card required. Start at billionverify.com.
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Mixmax Email VerificationMixmax Email Verification explains how Gmail bounces affect Google Workspace accounts and which list fields to check before import, including list age.Try Mixmax Email VerificationMore in Cold Email
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