DEVLO.CH — SWISS B2B AGENCY
B2B Multichannel Outbound Prospecting: Cold Email, LinkedIn and Cold Calling
Cold Email + LinkedIn + Calling to generate a qualified and predictable pipeline.
Multi-channel outbound prospecting **is a B2B sales strategy** that involves contacting your ideal prospects via several channels simultaneously: personalised cold email, LinkedIn messages, cold calls and coordinated follow-ups. devlo designs and executes these campaigns from A to Z · from defining the ICP to qualifying leads and booking appointments directly in your sales team's diary.
Unlike a single-channel approach, multi-channel significantly increases response rates by reaching prospects at the right time on their preferred channel. Our campaigns combine lemlist for email sequences, LinkedIn Sales Navigator for targeting, and an adapted telephone script for follow-up. The result: qualified appointments with the right decision-makers within 1 to 5 weeks.
What this service covers
- ✓Definition and validation of KPI with firmographic and behavioural criteria
- ✓Building the prospecting list (TAM → SAM → qualified ICP)
- ✓Drafting and A/B testing of cold email sequences
- ✓LinkedIn prospecting: connection requests, direct messages, InMails
- ✓Cold calling: scripts, managing objections, note-taking
- ✓Coordinated multi-channel sequences (email → LinkedIn → call → reminder)
- ✓Inbox management and response qualification
- ✓Weekly reporting: opening, response, interest, appointments
- ✓CRM integration (HubSpot, Salesforce, Pipedrive)
- ✓Optional sales coaching
5-step devlo process
- 1
Onboarding & ICP
Understand your market, your KPIs and your current best customers.
- 2
Lead generation
Identify and qualify prospects using Clay, Sales Navigator and Apollo.
- 3
Sequences & copywriting
Write multi-channel messages that convert.
- 4
Execution & follow-up
Continuous prospecting, relaunching, qualifying and booking.
- 5
Reporting & optimisation
Iterate every week to improve performance.
By Charles Perret, Founder, devloWhy does multi-channel outperform single-channel prospecting?
Cold email alone reaches prospects who read their emails. LinkedIn outreach reaches those who interact more on the network. Cold calling triggers conversations with busy decision-makers who rarely respond in writing. By combining these channels, you mechanically increase your contact surface and reduce dependency on any single touchpoint.
Indeed, what matters is not raw volume, but coordination. According to HubSpot (2024), multi-channel sequences generate 30-50% more qualified responses than single-channel campaigns. At devlo, each channel serves a precise objective in the sequence: email opens the door, LinkedIn gives credibility, and calls speed up the process. This orchestration improves the regularity of the pipeline.
In summary:
Key takeaways
- Multi-channel prospecting increases response rates by 30-60% compared to single-channel
- Each channel serves a distinct purpose: email opens, LinkedIn builds trust, calls accelerate
- Coordination and sequencing matter more than raw volume of outreach
- Qualified appointments typically arrive within 1 to 5 weeks of campaign launch
| Criterion | In-house | With devlo |
|---|---|---|
| Time to launch | 3-6 months (hiring, training, stack) | 2-3 weeks, campaigns live |
| Annual cost | CHF 80-120k (SDR salary + tools) | Starting from CHF 3k/month |
| Channels activated | Often only 1 channel mastered | Email + LinkedIn + Calling coordinated |
| Copywriting expertise | Learning by trial and error | 1,000+ campaigns of experience |
| Scalability | Limited by team size | Volume adjustable every month |
Observed customer results
Monizze
120 qualified appointments
7,000 targeted decision-makers · Belgium · HR
Horus Software
200,000 turnover signed
80+ RDVs · 60% demo→client conversion
CareerLunch
54 RDV DACH
71% opened · 29% clicked · 516 leads
APIDAE
70 qualified appointments
UEFA, TAG Heuer, Rothschild · 40% response
Step 1/2 — Configure
50%
Configuring your multi-channel outbound strategy
Select your context to receive a tailored operational recommendation.
Desired channels
Current stage
Target volume per month
Main objective
Deadline
Main challenges
OptionalConfiguration preview
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You can edit your choices before submission.
Step 2/2 — Contact details
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Step 2 — Get the plan
Review your configuration then submit your contact details.
Selected summary
Desired channels: Not defined
Current stage: Not defined
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Thank you for reaching out. We will get back to you within 24 hours.
Case studies
Field proof for this service
Discover real campaigns delivered by devlo in Switzerland, Belgium, France and DACH. Each case study shows results, the method used, and operational learnings.
120 qualified appointments
·7,000 decision-makers targeted
·96-99% deliverability
·Virtually no show
Monizze
Belgium
200,000 turnover signed
·80+ appointments
·45 new customers
·60% conversion demo→client
Horus Software
Belgium
54 meetings in the DACH region
·71% open
·29% click-through
·516 prospects contacted
CareerLunch
DACH
4,500 companies targeted
·10+ campaigns
·81% open
·54% response rate
Saporo
Multi-country
45% response rate
·73% open
·14 qualified appointments
·Contracts signed
Cegos
German-speaking Switzerland
+30 interested prospects
·69% response rate
·1,600 companies analysed
·12 days before 1st appointment
Abacus
French-speaking Switzerland
70 qualified appointments
·UEFA, TAG Heuer, Rothschild
·40% response rate
·13% interest
APIDAE
French-speaking Switzerland
First appointments in 3 weeks
·52.7% open
·+1,000 cold calls
·Increase in demos
IDDI
International
40 interested prospects
·20 discovery calls
·15 demos planned
·14% interest
Locky
Belgium / France
52 interested prospects
·74% open
·37% response rate
·Multi-ICP validation
SquareCo
International
16 qualified appointments
·89% open
·69% response rate
·6% of meetings
Lemanvisio
Switzerland
11 qualified tenants
·87% open
·73% response rate
·9 days before 1st appointment
HIAG
Switzerland
FAQ multi-channel outbound
How long before the first appointments?
Generally 1 to 5 weeks, depending on the KPI and the channels activated.
Generally 1 to 5 weeks, depending on the KPI and the channels activated. Niche markets often take 3 to 4 weeks, while some segments respond as early as the first week.
What's the difference between multi-channel outbound and cold email alone?
Cold email covers prospects who are responsive to email.
Cold email covers prospects who are responsive to email. Multi-channel adds LinkedIn and telephone to capture decision-makers who prefer other channels, which frequently improves response rates by 30-60%.
Does Devlo manage all the prospecting?
Yes, we can manage the entire cycle (lead gen, outreach, qualification, making appointments) or intervene in a specific part of the chain depending on your internal organisation.
Yes, we can manage the entire cycle (lead gen, outreach, qualification, making appointments) or intervene in a specific part of the chain depending on your internal organisation.
What languages do you prospect in?
We operate in French, German, English and Dutch for Switzerland, Belgium, France, the DACH region, the Benelux countries and international markets.
We operate in French, German, English and Dutch for Switzerland, Belgium, France, the DACH region, the Benelux countries and international markets.
New at devlo
Also discover AI Sales Ops, our AI automation layer for B2B sales teams
If you want to complement this service with AI workflows for inbox management, CRM updates, meeting preparation, reporting or battle cards, we can deploy them alongside your outbound engine.
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Ready to generate your first qualified appointments?
Share your context via the configurator or book a meeting with the devlo team to launch your strategy.