DiggDiggsolution is a B2B cold email agency. We build your sending infrastructure (separate domains, inboxes, SPF, DKIM, DMARC and warmup), source and verify the right decision makers, write personalized multi-step sequences, and handle replies until a qualified meeting lands on your calendar. Campaigns run in Instantly, with leads and pipeline tracked in HubSpot or GoHighLevel.
What a cold email agency actually does
A cold email agency runs outbound email on your behalf so you get sales conversations without hiring and training an SDR team. The work splits into four jobs, and most failed campaigns skip at least one of them.
- Infrastructure. We buy secondary domains so your main domain is never at risk, create inboxes, configure SPF, DKIM and DMARC, and warm each inbox before a single prospect email goes out.
- Data. We build the list from Apollo, Clay and Prospeo, pick one right decision maker per company, and verify every email before sending.
- Copy. Short, plain-text emails that reference something real about the prospect, followed by up to five follow-ups.
- Reply handling. Interested replies are qualified and turned into booked calls, and every lead is logged in your CRM.
Our cold email process, step by step
1. ICP and offer review
We agree on who you sell to (industry, company size, role, region) and what you can credibly promise them. This decides everything downstream.
2. Domain and inbox setup
Typically 2 to 3 sending domains with 2 to 3 inboxes each, warmed for around two weeks. We keep daily volume per inbox low to protect deliverability.
3. List building and verification
Founders for small companies, marketing or sales leads for larger ones. Every address is verified, and catch-all or risky addresses are removed.
4. Sequence writing and launch
We write and test variations, launch in small batches, and watch open, reply and bounce rates before scaling.
5. Optimization and reporting
Weekly reporting on sends, replies, positive replies and meetings, with copy and targeting changes based on the numbers.
Results from real campaigns
See the full breakdowns on our portfolio and case studies pages.
Cold email agency vs hiring an SDR
| In-house SDR | Diggsolution | |
|---|---|---|
| Time to first campaign | 2 to 3 months to hire and ramp | About 2 to 3 weeks including warmup |
| Tools and data | You pay for every seat and database | Apollo, Clay, Prospeo, Instantly included in the service |
| Deliverability | Often learned by trial and error | Separate domains, authentication and warmup from day one |
| Channels | Usually email only | Email plus LinkedIn and cold calling when it fits |
Who we work with
SaaS founders, marketing and service agencies, B2B consultants, Amazon service providers, distributors and BPO companies selling into the US, UK, Europe and the Middle East. Related pages: SaaS lead generation, lead generation for agencies, Amazon seller leads.
Cold email deliverability: how we keep you out of spam
Most cold email fails before anyone reads it, because the message lands in spam. Deliverability is the part of the work buyers never see, and it decides whether a campaign works at all.
- Separate sending domains. We send from lookalike domains, never your main website domain, so your everyday email stays safe.
- Full authentication. SPF, DKIM and DMARC records are set on every sending domain before the first email goes out.
- Inbox warmup. New inboxes warm up for two to three weeks in Instantly, building a sending history before real campaigns start.
- Low daily volume per inbox. Each inbox sends a modest number of emails per day. We add more inboxes instead of pushing one inbox too hard.
- Verified lists only. Every address is verified before sending. High bounce rates are the fastest way to damage a domain, so unverified contacts never go into a campaign.
- Plain, personal copy. Short emails without heavy images, tracking links or attachments read like a real person wrote them, because one did.
What a good cold email looks like
A cold email that gets replies is short, specific and about the reader. Our sequences usually follow one pattern: a line that shows we looked at their business, the problem we think they have, one sentence on how we solve it, and a small, easy ask. Follow ups add a new angle each time instead of repeating "just checking in".
We write separate versions for each segment of your list, because a founder of a ten person agency and a marketing director at a large brand care about different things.
How we measure a cold email campaign
| Metric | What it tells you |
|---|---|
| Bounce rate | Whether the list was clean. We aim to keep it very low. |
| Open rate | Whether emails reach the inbox and the subject line works. Our OnCosmetics campaigns reached open rates up to 63%. |
| Reply rate | Whether the message and the targeting are right. |
| Positive replies | Real interest, not unsubscribes or out of office messages. |
| Meetings booked | The number that matters most for your pipeline. |
You get regular reports with every one of these numbers, plus the subject lines and openers that performed best.
Common cold email mistakes we fix
Many clients come to us after trying cold email on their own. These are the problems we see most often.
- Sending from the main domain. One bad week can hurt every email the company sends. We move outreach to separate domains.
- Buying cheap lists. Old or scraped lists bounce, which damages sending reputation. We build and verify lists ourselves.
- Long, salesy emails. Buyers skim. Short emails about the reader's problem get more replies.