A while ago we created an automatic system that continuously scans sender domains used by all Mailvio customers. Based on the results we do active outreach to the owners of those domains if we detect an issue or a sub-optimal domain configuration.

Getting your domain authentication (SPF, DKIM, DMARC, Custom MX) set up to be 100% correct is critical, and the slightest error will tank your email marketing results.

One pending improvement for this system is automatically checking the SPF record and how many 'lookups' it does.

You see SPF lookups have a maximum of 10, everything after just flat out fails.
Each 'include:....' is 1 lookup, and the problem is many include: in your SPF DNS records, include sub-lookups. They also count.

Mailvio had 5 lookups due to the larger number of separated IPs. Five is a lot and can easily cause domains to surpass the 10 max. Hence, we made some changes, and now, we're happy to say we're down to 3.

Want to check it for yourself?
This tool is great and gives you all the info you need: https://dmarcly.com/tools/spf-record-checker

Not too long ago, a user asked how to adjust line height. I quickly had a look myself, and I couldn't find the answer either until after I asked the team how to do it.

Hence, we figured we needed training to explain this.

Have a look at our new released training on how to do this:
https://support.kvsocial.com/875611-How-to-adjust-Line-Height-in-your-email

The single most damaging factor in your email marketing success and deliverability is: SPAM COMPLAINTS.

There are 2 types of spam complaints:
1. spam complaint via the link in your email footer that is handled directly by our platform

2. spam complaints via the interface of the ISP (e.g., Gmail / Outlook).

The 2nd type is literally 100x worse for your results (that is why it is so important to have that "Report Unwanted Email' or 'Report Junk' in your emails).

Many people are unaware that ISPs, such as Google, do NOT consistently notify our platform when someone clicks the spam button in their interface. Although there are various feedback mechanisms for reporting this, email providers frequently opt not to implement them intentionally.

They claim it is to 'protect users' privacy'....

Anyway, it means that the spam reports we get from ISPs are always underreported. This is also why we created the Google Postmaster Integration: to get better insight into your real numbers.

Now, with this update we display the aggregated data of spam complaints directly in your account.

Click here ('configure domain visibility' - right lower corner):

And then you will see this:

On the right side, you will see the number of spam complaints, and the graphs show the number of spam complaints received per domain.

In the example above, you can see that February 15th, 2025, was a very bad day for this account. That tells us we need to check what and to whom we sent emails that day and not repeat that. Note that the spam complaints are hard totals per domain per day, not percentages.

In the first week of February 2025, we suddenly saw the queues of a few of our email servers go nuts, slowing down the sending of a handful of our users.

After a quick investigation, we found that a handful of users were getting all of their emails bounced back. These were all soft bounces. A soft bounce is a temporary error and automatically gets retried again later. Meaning we send the email to the servers of the ISPs (exclusive Gmail in this case) and they give us a soft-bounce error and the email goes straight back to our queue to be tried in a few minutes later.

We concluded that the reason for these soft bounces was the senders' DMARC setup. They all had DMARC set up, which was technically valid, but it wasn't 'perfectly' set up. 

Gmail had released an update, the next step in their DMARC implementation, which is now much stricter.

As you know, email deliverability is Mailvio's #1 focus. We go out of our way to help users and reduce deliverability stress (as much as possible). In this update, we have added a sender domain authentication agent.

This agent will continuously scan all sender domains from all our users daily to ensure they are 100% correctly set up. 

If it detects an issue, it will send you an automatic email (for each domain) explaining precisely what is wrong and how to fix it.

IMPORTANT: To protect the reputation of our IPs and email infrastructure, we will pause your account from sending emails completely if you haven't fixed the issue by day 12 after we detect it.

Our GoHighLevel (GHL) Mailvio integration app was just approved on the GHL Marketplace.

You can now sync your leads from GHL to Mailvio super easily. The app works for both white-label agent accounts and sub-accounts.