What cold email software is good at
This is not a category to dismiss. Deliverability is a real discipline, and the specialist tools are better at it than most all-in-one products.
- Sending a sequence to a list on schedule, reliably and at volume
- Pacing, sending windows and rotating between mailboxes
- Domain warming and deliverability monitoring
- Tracking opens, clicks and replies per campaign
- A/B testing subject lines and first emails across a large list
Where it stops
Six places the work comes back to you. None are flaws in the tools. They are simply outside what a sending product is built to do.
It takes whatever list you give it
It has no opinion on who should be contacted. If the list is wrong, it sends to the wrong people faster than you could by hand. Targeting stays your problem.
Personalisation is a merge field
A first name and company name in a shared template is not personal, and readers spot it. Real per-person writing needs research the sending tool does not do.
AI add-ons write from thin context
An AI button gets whatever is in the spreadsheet row and is asked to sound convincing. That produces a confident line about a problem the company does not have.
Email is the only channel
Some buyers never open a cold email. Reaching them means a call, which means a second product that has no idea what your emails already said.
Replies are handed back to you
The tool tells you someone replied. Reading it, answering, judging whether it is real interest and getting a meeting booked are all still manual.
Booking is a link and a hope
Most cold email tools end at a scheduling link. Whether the meeting lands depends on the prospect doing the work.
The costliest failureNot an email that goes to spam. One that lands, gets read, and says something confidently untrue about the reader's business. How GNX Sales is built to avoid that.
Side by side
The rules your email has to meet
Whatever tool you use, the inbox providers and the law set the floor. These are the ones that matter most for B2B outreach to the US, Canada and the UK, as of October 2026.
Gmail and Yahoo
- Sending 5,000+ emails a day to Gmail makes you a bulk sender, permanently.
- Bulk senders need SPF, DKIM and a DMARC record aligned with the From domain.
- Marketing email needs a one-click unsubscribe, honoured within 2 days.
- Keep spam complaints under 0.1%, and never reach 0.3%.
- Since November 2025, Gmail has been stepping up enforcement, slowing down or rejecting mail that fails these rules.
Microsoft Outlook
- Applies to domains sending 5,000+ emails a day to Outlook addresses.
- Since May 5, 2025: SPF and DKIM must pass, and DMARC must be at least p=none.
- Mail that fails is rejected outright.
CAN-SPAM Act
- No exception for business-to-business email.
- Truthful headers and subject lines, a valid postal address, a clear way to opt out.
- Honour opt-outs within 10 business days.
- Fines of up to $53,088 per violating email.
CASL
- You need consent before sending. It can be implied when someone published their business address, did not refuse messages, and your email fits their role.
- Identify yourself and include an unsubscribe that works for 60 days.
- Process unsubscribes within 10 business days.
- Penalties up to $10 million per violation for a business.
PECR and UK GDPR
- No consent needed to email corporate addresses, but say who you are and give a way to opt out.
- A named work address like jane.smith@company is personal data, so you need a lawful basis, usually legitimate interests, and must honour objections.
- Sole traders and some partnerships need consent.
This is a summary, not legal advice. Check the rules for every country you sell into.
Which one you need
An email-only tool is the right call when
- You already have a well-qualified list and only need reliable delivery at volume
- You send from many mailboxes and domains and need rotation and warming built in
- Your team writes its own copy and wants nothing generated
- Your buyers are reachable by email alone, and a call would be unwelcome
You need something broader when
- Building and qualifying the list is what eats your week
- Generic templates have stopped getting replies
- Part of your market never opens email and needs a call
- Follow-ups and replies are falling through the cracks
- You pay separately for a database, enrichment, a sequencer and a dialer
If it is the second list, start with the sales automation overview or the AI SDR tools buyer's guide.
Frequently asked questions
What is cold email software?
Tools built to send outbound email sequences at volume: list upload, templates and merge fields, scheduling and pacing, mailbox rotation, domain warming, and open and reply tracking. They are good at delivery and neutral about who you send to.
Is GNX Sales cold email software?
It does the core of what cold email software does: sequences, paced sending inside your windows, follow-ups and reply tracking. It also finds and qualifies the leads, researches each person before writing, drafts replies, makes AI voice calls and books the meeting.
Do I still need a separate cold email tool?
Not for the outbound motion itself. GNX Sales does not warm domains for you, so if you run very high volume across many rotating domains and treat warming as its own discipline, a specialist sending tool can still sit alongside it.
Does cold email still work?
Yes, when targeting is tight and the message is really about the reader. Large 2026 benchmarks put the average reply rate at roughly 3 to 5%, and smaller, tighter campaigns consistently beat big ones. A big share of replies also come from follow-ups, not the first email: 42% in one dataset, and 57% of positive replies in another. What stopped working is volume.
Will AI-written cold email hurt my domain?
The risk comes from volume, poor lists and spam complaints, not from who wrote the words. Gmail wants complaints under 0.1% and stops helping senders above 0.3%. Tight targeting, paced sending, a working unsubscribe, honest content and warming a new domain matter far more than whether a person or a model wrote the copy.
How is this priced compared to cold email tools?
Cold email tools often charge per seat or per mailbox. GNX Sales is one subscription, from $59 to $479 a month, with seats and mailboxes included and a credit pool shared by enrichment, writing and calling.