Cold calling alone is good. Cold calling + email + LinkedIn is 2.15x better.
2.15x
Higher reply rate with phone + email combo
Source: InsideSales Research
1. Why Multi-Channel Works
- • Different people respond to different channels
- • Creates "surround sound" effect — you're everywhere
- • Builds familiarity across touchpoints
- • Shows persistence without being annoying
"Combining voicemail with email produces 2.15x higher reply rates compared to email alone."
2. The Sequence Structure
21-Day MSP Cold Calling Sequence:
| Day | Channel | Action |
|---|---|---|
| 1 | 📞 Phone | Call #1 (no voicemail) |
| 1 | ✉️ Email | Introduction email |
| 3 | 📞 Phone | Call #2 (leave voicemail) |
| 3 | Profile view | |
| 5 | ✉️ Email | Follow-up (different angle) |
| 7 | 📞 Phone | Call #3 |
| 7 | Connection request | |
| 10 | ✉️ Email | Value-add (case study) |
| 12 | 📞 Phone | Call #4 |
| 14 | DM after connection | |
| 17 | 📞 Phone | Call #5 |
| 21 | ✉️ Email | Break-up email |
3. Coordinating Messages
After Voicemail:
Send email immediately. Reference the voicemail: "Just left you a voicemail — wanted to follow up here too."
After Email with No Response:
Call and reference email: "I sent you an email last week about [topic] — did that land?"
4. Channel-Specific Tips
📞 Phone
- • Best for urgency & connection
- • Leave voicemail on 2nd/3rd attempt
- • Always follow with email
✉️ Email
- • Best for detail & documentation
- • Reference phone attempts
- • Keep short (3-4 sentences)
- • Best for credibility & research
- • View profile before calling
- • DM after connection accepted
5. What to Track
- • Which channel gets the response
- • How many touches to meeting
- • Which day/time works best
- • Where in sequence most respond
Pro Tip
Most responses come between touches 5-8. Don't give up after 2-3 attempts.
Key Takeaways
- →Phone + Email = 2.15x more effective than either alone
- →10-12 touches over 21 days — coordinated across channels
- →Reference other channels — "Just left you a voicemail..."