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Beginner · English

How it works

Nine short films on how your email reaches the inbox

  • 12 lessons · 10 min
  • Updated November 2026
How it works

What you'll learn

  • Why every list is cleaned before it sends, and how a probe checks the addresses no mail server will vouch for
  • The four mailbox providers, and why each one is paced on its own
  • How a quota sets a sending domain's pace, and why it grows only on real demand
  • Why missed time is never made up, and how one campaign is shared across many sending domains
  • How design variants and the Sending Pattern Score keep your sending natural
  • Where your links should point, and how your reports count people, not machines

Course content

3 sections · 12 lessons · 10 min in all

Who your mail goes to4 lessons · 4 min

How every list is cleaned, how the addresses no mail server will vouch for are checked, and the four mailbox providers every send is sorted for.

  1. Video: Why every list is cleanedPreview: Why every list is cleaned2 min
  2. Video: What probing is2 min
  3. Video: The four mailbox providers2 min
  4. Quiz: Check: who your mail goes to
How fast it goes4 lessons · 3 min

How a quota sets each sending domain's pace, why missed time is never made up, and how one campaign is shared across many sending domains.

  1. Video: Traffic governance2 min
  2. Video: Natural pace, and why it isn't warm-up1 min
  3. Video: Many sending domains, one campaign2 min
  4. Quiz: Check: how fast it goes
What providers and people see4 lessons · 3 min

How design variants keep every send different, why every sending domain serves a real page, and how your reports count people, not machines.

  1. Video: Design variants and the rarity score2 min
  2. Video: A real page on every sending domain2 min
  3. Video: Real people, not machines2 min
  4. Quiz: Check: what providers and people see

About this course

Nine films, each about a minute long, show what happens to a campaign between the moment you send it and the moment it arrives: who it goes to, how fast it goes, and what mailbox providers and people see when it lands.

Each part ends with four questions. Watch the nine films and pass the three checks to earn your certificate.

Who this course is for

  • Anyone sending campaigns with Yeti Outreach
  • Anyone choosing an email platform who wants to know how sending works