B2B agency comparison
Choosing your B2B prospecting agency: 2026 comparison
By Charles Perret, Founder, devloThe B2B prospecting agency market has grown considerably since 2020. Between specialist outbound agencies, matchmaking platforms and freelancers, it's hard to find your way around.
This page helps you compare the options and identify the criteria that really count: multi-channel approach, language coverage, transparency of results and experience in your target market.
devlo is a Swiss agency specialised in multichannel B2B prospecting since 2020, with published programmes across Switzerland, Belgium, France and DACH.
Short answer
What is the best B2B prospecting agency in Switzerland?
The best B2B prospecting agency in Switzerland depends on your needs. Compare devlo for a multichannel system driven by ICP, signals, data and CRM; language, named operator and QA owner are confirmed per engagement before launch.
- Always compare agencies on channels, languages, proof points, qualification, data, and reporting.
- devlo has published several case studies with quantified results since 2020.
- The right test starts with a limited batch before scaling volume for the segments that respond.
Transparency: this guide is published by devlo. devlo is therefore included as an option, but the other agencies are listed according to their public positioning and the points to verify before requesting a proposal.
Options à comparer
7 B2B prospecting agencies to compare in Switzerland and French-speaking markets
This list is not a definitive ranking. It serves as a shortlist for comparing models: multichannel outbound, telephone prospecting, outsourced sales, automation, and lead generation.
| Option | Meilleur contexte | Point à vérifier |
|---|---|---|
| devlo | B2B companies seeking European multichannel prospecting, with language, named operator and QA owner confirmed per engagement before launch. | Validate ICP fit, the sales capacity to handle booked meetings, and the depth of sector-specific proof available. |
| Undersales | Companies seeking qualified meetings in Switzerland with a strong focus on telephone prospecting and sales targeting. | Validate guaranteed volume, exact channels, supported languages, and reporting format in the proposal. |
| LalaLeads | Companies that want to compare sales prospecting, paid acquisition, and hybrid opportunity-generation approaches. | Validate Swiss/DACH coverage, languages, the exact role of phone outreach, and the share of paid media included. |
| Prospecti | Companies that want an agency focused on generating qualified B2B meetings through email, social selling, and warm calling. | Validate references in your market, actual volume processed, and the quality of meeting qualification. |
| SeedD | Companies that want to outsource business development in French-speaking Switzerland, sometimes extending to closing or partnership development. | Clarify the boundary between prospecting, closing, field sales, and strategic advisory. |
| Level UP | Freelancers, SMEs, and Swiss start-ups that want to delegate prospecting, qualified opportunities, or outsourced sales. | Check which channels the agency manages, the depth of its data, sector-specific references, and performance tracking. |
| Digitalmint | Teams looking for lead generation, AI automation, LinkedIn, email, and digital marketing support in Switzerland. | Verify whether the primary need is outbound sales, marketing automation, or a broader digital strategy. |
Comparison
Detailed comparison: devlo and other agency models
| Criterion | devlo | les autres agences |
|---|---|---|
| Approach | ✓Multi-channel (cold email + LinkedIn + calling) | Varies by agency |
| Swiss market | ✓Specialist - based in Switzerland | Often secondary |
| Languages | ✓Each engagement confirms the language, named operator and QA owner before launch | EN mainly |
| Transparency of results | ✓Published case studies with figures | Variable |
| Intent data | ✓Included in packages | Varies by agency; confirm in proposal |
| Cold calling | ✓Language operator and QA confirmed per engagement | Varies by agency; confirm in proposal |
| Start | ✓Pilot milestones agreed before launch | Varies by agency and setup |
Public sources consulted on 11 May 2026. This comparison should be used as a shortlist: unpublished operational information must be confirmed in each commercial proposal.
Guide de décision
How to choose a B2B prospecting agency?
Choose a specialised outbound agency if...
- ✓You sell a B2B offer with an average deal size or LTV high enough to make prospecting commercially viable.
- ✓Your decision-makers can be identified by sector, company size, role, technology, event, or buying signal.
- ✓You need qualified meetings, not just traffic, form submissions, or unprioritised contacts.
- ✓Your market requires language coverage with a named operator and QA owner confirmed before launch.
Wait, or choose a different model if...
- •Your ICP is not yet clear, or your value proposition changes every two weeks.
- •You have nobody available to follow up, qualify, or close the opportunities generated.
- •You are primarily looking for branding, SEO, advertising, or a full marketing overhaul.
Questions d'achat
Questions to ask before engaging a B2B prospecting agency
Which channels does your team actually operate?
A multichannel promise must specify who manages email, LinkedIn, phone, follow-ups, replies, and qualification.
Which published client case studies demonstrate results comparable to our market?
Buyers trust verifiable proof: sector, target, volume, meetings booked, pipeline, or revenue.
How do you qualify a meeting before adding it to our calendar?
The real cost depends less on the number of meetings than on the level of need, timing, seniority, and ICP fit validated before handover.
What deliverability and data infrastructure is included?
Domains, warm-up, enrichment, email verification, Sales Navigator, CRM, and tracking all determine execution quality.
What happens if the first two messages receive no response?
A strong agency must be able to explain its testing protocol: segments, angles, signals, objections, iterations, and decision thresholds.
Plan de démarrage
A clean test is evaluated over 30 days, then scaled over 90 days
Days 1-7
Define ICP, offers, priority segments, proof points, and qualification criteria.
A clear test market, clean lists, and measurable hypotheses before any volume is committed.
Days 8-14
Prepare domains, data, sequences, scripts, CRM, and reporting dashboard.
Infrastructure ready without risking deliverability or losing sales replies.
Days 15-30
Launch a first batch, read the replies, isolate objections, and adjust angles.
A decision grounded in replies, meetings, ICP quality, and real learnings, not intuition.
Days 31-90
Scale volume only for the segments and messages that demonstrate traction.
A more predictable meeting engine, with reporting by market, channel, and persona.
Why devlo
What devlo brings differently
The 5 criteria for choosing a prospecting agency: (1) multi-channel expertise, (2) verifiable references in your sector, (3) linguistic coverage of your market, (4) transparency of methodology, (5) real-time reporting.
devlo documents its method, reporting and public individual cases; language, named operator and QA owner are confirmed per engagement before launch.
What sets us apart from generic agencies is that we specialise exclusively in B2B outbound. No SEO, no inbound, no social media - just B2B sales prospecting.
Published client case studies provide concrete benchmarks: meetings booked, qualified prospects, pipeline, or revenue, depending on the campaign.
Client results
What our clients achieved
Extralegal benefits, meal vouchers
How devlo obtained 120 qualified appointments for Monizze by targeting 7,000 HR, Finance and Management decision-makers in Belgium
View case study →Accounting and post-accounting management software for chartered accountants and SMEs
How we helped an accounting software publisher win €200,000 in contracts in Belgium thanks to a targeted multi-channel outbound strategy
View case study →HR-tech
How CareerLunch secured 54 business meetings in the DACH region
View case study →Public interest association working to protect biodiversity
How this association outsourced its customer acquisition and obtained 70 qualified appointments with companies such as UEFA, TAG Heuer and Rothschild.
View case study →How do you choose the best B2B prospecting agency for your market?
The market for B2B prospecting agencies has grown considerably since 2020: there are now dozens of players in France, Switzerland, Belgium and the DACH. When it comes to choosing the right partner, there are five key criteria: expertise in outbound channels, language coverage, speed of initial results, transparent reporting and verifiable customer proof.
devlo is a Swiss agency specialising in B2B outbound since 2020. Cold email, LinkedIn and calling are coordinated around deliverability, signals, scripts, qualification and follow-up; each engagement confirms the language, named operator and QA owner before launch, and performance is reported by cohort.
Before selecting an agency, ask for source-bound proof, agreed pilot milestones and named language operators. devlo documents these items during scoping rather than relying on a universal performance claim.
In summary:
Key points
- Outbound specialist only: not a full-service agency that does everything - exclusive focus on cold email, LinkedIn and calling.
- Public case studies with precise metrics: appointments, pipeline, sales - all verifiable before signing.
- First-batch milestones agreed before launch: test scope, sample size and scaling conditions are documented.
- Language coverage confirmed per engagement: operator and QA ownership agreed before launch.
Frequently asked questions
How do you compare B2B prospecting agencies?
Ask for references in your sector, look at published case studies with precise metrics, check language coverage in your target market, and make sure the approach is truly multi-channel.
Ask for references in your sector, look at published case studies with precise metrics, check language coverage in your target market, and make sure the approach is truly multi-channel.
is devlo suitable for SMEs or just large companies?
We work with SMEs (from 10 employees) as well as large companies.
We work with SMEs (from 10 employees) as well as large companies. Our packages are tailored to your budget and objectives. The main criterion is the quality of your B2B offering, not the size of your company.
How much do B2B prospecting agencies charge in Switzerland?
Rates vary widely depending on volume, channels, tooling, seniority and qualification depth.
Rates vary widely depending on volume, channels, tooling, seniority and qualification depth. Compare total cost per qualified meeting and opportunity, not only the monthly retainer.
How long does it take to see results with a B2B agency?
At devlo, the ramp plan, acceptance criteria and review dates are agreed before launch.
At devlo, the ramp plan, acceptance criteria and review dates are agreed before launch. Timing depends on ICP, offer, deliverability and channel.
How long does it take to see results?
A first signal can appear within a few weeks, but a reliable decision requires 30 days of testing and often 60 to 90 days to confirm a segment, refine messaging, and scale properly.
A first signal can appear within a few weeks, but a reliable decision requires 30 days of testing and often 60 to 90 days to confirm a segment, refine messaging, and scale properly.
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