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OneThirtyFive Review: Services, Fit & Verdict
Our verdict: 3.6/5
By Janis Plume · · Independent editorial review
Our independent review of OneThirtyFive's outbound services: what they do, who they fit, and an honest verdict.
- Cold emails per month
- 12M+
- LinkedIn DMs per month
- 300K+
What OneThirtyFive does
OneThirtyFive is an outsourced top-of-funnel sales partner for startups. Their site says they help early-stage B2B startups grow pipeline so founders and closers can stay focused on product and deals, rather than building and managing an in-house BDR function too early.
Their differentiator, based on the homepage and directory bio, is a phone-first outbound model supported by AI-powered lead generation plus email and LinkedIn. They position direct calling as the core channel, with text-based outreach playing a supporting role. Their site also says they use in-office BDRs, and the directory listing describes US-based, native English speaking SDRs. The core message is clear: they believe live calling still matters for booking meetings, getting market feedback, and reducing dependence on channels they see as getting noisier.
Who it's a good fit for
OneThirtyFive looks best suited to early-stage SaaS and B2B services startups that want outbound coverage fast and agree with a phone-led sales motion. If you're a founder who doesn't want to gamble on your first BDR hire, their positioning will likely resonate. It's also a more obvious fit if your buyers still answer calls, your offer benefits from live conversation, and you want a partner that sounds specialized rather than generalist.
On the other hand, I'd be cautious if your outbound motion is heavily email-led, depends on deep account-based orchestration, or needs a wide service menu beyond top-of-funnel prospecting. I would also look elsewhere if you need lots of third-party validation before signing. We could not verify third-party reviews from the provided data, so buyers who rely on documented client sentiment will need to do more diligence themselves.
Pricing & engagement
Pricing is partly visible, but not fully explained. The clearest signal in the provided data is a lemlist directory listing showing multichannel outbound at about 8200, with technical setup listed as 0 and consulting or training listed as 0. That's useful as a directional reference, but it is not the same as a full pricing page with scope, minimum term, team allocation, or volume assumptions.
Before signing, I'd want OneThirtyFive to clarify exactly what is included in that monthly figure, how phone, email, and LinkedIn are divided in practice, what level of list building and targeting is included, how meetings are qualified, and whether there are setup requirements on your side. Since their pitch is phone-first, I'd also ask how much of the output depends on call volume versus messaging, and what success looks like for a startup with a longer sales cycle.
Our verdict
My read is that OneThirtyFive has a credible, specific point of view. A lot of agencies claim to do outbound for everyone. OneThirtyFive, by contrast, is clearly built around startup top-of-funnel support and live calling. That kind of focus is a strength because you know what you're buying. It also creates limits because the service appears narrower than a broad-spectrum sales development shop.
The 3.6 score reflects that balance. Best-fit clarity is strong, and the partial pricing signal helps. But the evidence base is still thin in a few areas that matter to careful buyers: we do not have verified third-party reviews, published results were not provided here, and deliverability detail is light because the emphasis is more on phone than on email infrastructure. If you like the phone-first thesis and you're an early-stage B2B startup, OneThirtyFive is worth a look. If you need broader proof or a more documented operating model, treat the sales call as a fact-finding step, not a formality.
Where OneThirtyFive is strong
- Clear specialization in startup top-of-funnel growth rather than vague full-service positioning
- Distinct phone-first approach, with email and LinkedIn used to support calling rather than replace it
- Some pricing visibility via the lemlist directory, which is more than many agencies provide publicly
What to check before signing
- No verified third-party reviews were available in the provided data, so external sentiment is hard to assess
- Public detail on deliverability, reporting, engagement structure, and qualification standards appears limited from the materials provided
- Best fit looks fairly narrow: mainly early-stage B2B startups, especially those that believe in a call-led outbound motion
Frequently Asked Questions
Is OneThirtyFive any good?
It looks like a legitimate and clearly positioned option for startup outbound, especially if you want phone-first prospecting rather than a generic email-heavy service. Their site consistently frames the offer around helping early-stage B2B startups grow pipeline without hiring BDRs too soon. The main caveat is proof depth: we do not have verified third-party reviews or broader published evidence in the provided data, so I'd rate them as promising but still worth pressure-testing on a call.
How much does OneThirtyFive cost?
The only pricing signal in the provided data is a lemlist directory listing that shows multichannel outbound at about 8200, with technical setup listed as 0 and consulting or training listed as 0. That gives a starting point, not a full quote. You should ask what deliverables, channels, call volume, targeting work, and meeting qualification standards are included in that number.
What makes OneThirtyFive different from other outbound agencies?
Their main distinction is the phone-first model. Their homepage says they expect passive text-based outreach to become less effective because of large language models and stricter email standards, so they focus on phone-related outreach while still using email and LinkedIn in support. That is a real strategic point of view, not just generic outbound language.
Who should consider OneThirtyFive and who probably shouldn't?
Consider them if you're a SaaS or B2B services startup, especially early stage, and you want outsourced pipeline generation without building an in-house BDR team yet. Be more cautious if your buyers rarely engage by phone, your outbound motion depends on broader channel depth, or you need strong third-party validation before moving forward. If you're unsure, book a free call with us for a straight second opinion on whether OneThirtyFive, another agency, or an in-house hire is the better fit.