Cold Email & Deliverability | Growth | Partner @ Vinna.ai

If you're interested in improving your cold emails, you've come to the right place.

I’ve worked with clients like Discord, HP, Jellysmack, L'Oréal Paris, Fourthwall, Creative Juice, PearPop, and many more — sending over 60 million cold emails across different industries.

I combine cold email and outbound GTM expertise with AI solutions, smart automation, and deliverability optimization to help businesses scale their outreach and consistently book meetings.

My passion is sharing the knowledge I’ve gained from 5+ years in outbound sales, lead generation, and email deliverability with businesses and individuals who want to get the most out of their cold emailing process.

If you think there’s any way we can help each other, feel free to DM me!

Jovan Shojlevski

How most cold emailers clean their lead lists:

1. Export their contact list
2. Upload it to a verification tool
3. Wait
4. Download the results
5. Re-import the clean list
6. Suppress the bounces

That's 2+ hours per week.

8 hours per month.

Almost 100 hours per year.

On something that should take 0 minutes.

And don't get me started if you do crazy sales volume.

I switched to Bouncer AutoClean since it came out.

It: 

1. Connects to your CRM.
2. Verifies new contacts every hour.
3. Reverifies existing ones automatically.
4. Suppresses undeliverable emails on its own.

I haven't touched a verification CSV since.

And my bounce rate has been as low as ever.

Automate the boring stuff.

Spend your time on what actually makes you money.

Landing 1.2M+ cold emails/month in the inbox at Grow Surely

I check 6 things before sending any sales email campaign.

(Skipping even one can destroy your deliverability)

1. DNS setup → MxToolBox

SPF, DKIM, DMARC must be perfect.

If anything is in red, I let the domain warm up for longer.

No exceptions.

2. Domain reputation → Cisco Talos

If a domain's reputation isn't perfect, nothing is sent from it.

3. Email verification → Bouncer

Every email gets verified before it touches a campaign.

It also identifies spam traps, breached addresses, and complainers.

Invalid/untrusted emails = bounces = reputation damage.

4. Copy readability → Hemingway Editor

Grade 7 reading level or below.

If a 14-year-old can't understand it, simplify it.

5. Mailbox warm-up → Instantly.ai

Every mailbox needs at least 14 days of warm up.

I also always leave backup inboxes to warm up for longer.

6. Sequencing → Instantly.ai

Randomized times. Random intervals.

Predictable patterns trigger spam filters.

That's it.

6 checks. <15 minutes. Every campaign.

I track a metric that most cold emailers ignore.

It's not reply rate.

It's not open rate.

It's lead-to-valid-email rate.

Here's what I mean:

You build a list of 1,000 leads.

You run them through an email finder.

Only 400 come back with valid emails.

That's a 40% lead-to-valid-email rate.

Which means 60% of your research was wasted.

I used to deal with this every week.

Hours spent building lists.

Half the leads had no usable contact info.

It was the most frustrating bottleneck in my workflow.

Then I switched how I source leads.

I start with Prospeo.io 

And it's not just for enrichment.

But for the entire list build.

Here's why it changes everything:

→ 280M+ contacts with pre-verified emails
→ I filter by ICP before I ever export
→ Every email is verified at the source
→ My lead-to-valid-email rate went from 40% to 90%+

That means from 1,000 leads, I get 900+ valid emails.

Not 400.

Same effort. More than double the output.

Here's what that looks like in practice:
Old workflow:

→ Scrape leads from 3 different tools
→ Cross-reference in Clay
→ Run emails through a verifier
→ Lose 50-60% of the list
→ 4 hours of work for 400 usable leads

New workflow:

→ Build the list directly in Prospeo
→ Enrich for personalization
→ Push to Instantly.ai
→ few minutes for 900+ usable leads

The best campaigns don't start with better copy.

They start with better data.

If you're losing half your list before you even send, fix the source.

I turn founders into impactful writers so they can attract ideal clients.

In 2016, I joined the Slovenian Armed Forces and started training to become a military pilot.

After 3 years, I decided to walk away from what was supposed to be my dream job and start from scratch.

From 2019 to 2022, I worked in performance marketing, helping 20+ brands scale through paid ads and marketing strategy. 

For the past 2 years, I’ve been working behind the scenes as a ghostwriter, helping founders create LinkedIn content that reflects their expertise and positions them as authorities.

Outside of work, I’m into endurance sports. 7× Half Ironmans (and counting). It’s been a big part of my life, and it shaped how I approach everything.

If you are interested in growing your B2B business through content, DM me 'content' and let's chat.

Nejc Jamscek

Currently, I create content for 6 founders.

This is the single biggest insight I can give:

- Visual posts can work
- Dense posts can work
- Simple posts can work
- Text-only posts can work
- Infographic posts can work
- Educational posts can work
- Opinionated posts can work
- Case study posts can work

Posts should feel natural to who you are and what you want to be known for.

I work with a client who is naturally good at telling stories. On our content interview calls, whatever I ask, he always answers with examples. Either something that happened on a call or what a client said.

Another client is good at explaining the reasoning behind complex topics (the WHY), so we shape the posts more in that direction.

So, the best bet:

- If you're a data-driven person, show data
- If you're a storyteller, tell more stories
- If you're opinionated, share more opinions

Don't force yourself to be something you're not.

This way, you have way more chances of staying consistent and seeing the long-term results.

I help B2B founders grow their opportunities with content. Content Strategist & Endurance Athlete. 8x Half Ironman & 1x Full∙Ex-Military∙Ex-Pilot

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The Battle

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