Apollo x Learning Technologies Group

LTG outbound infrastructure resource hub

A single home for the lookalike domain, mailbox sizing, setup, warm-up, and launch plan for PeopleFluent, OpenLMS, and Rustici Software.

View resources Open strategy
Current package
May 2026
01
Protect primary domains Keep cold outbound away from the customer-facing domains.
02
Size brand pools Model mailbox and domain count by planned monthly volume.
03
Launch with controls Use the setup checklist, warm-up curve, and owner map.
1
current strategy resource with six working modules
3
brand motions split into separate sender pools
8
week mailbox warm-up plan before full production speed

Resource Library

Open the full strategy for the complete plan, or jump directly into the module that matches the work in front of the team.

Primary resource ↗
Lookalike Domain and Mailbox Strategy
The full planning resource for protecting primary domains, selecting lookalikes, sizing mailboxes, and launching safely.
Strategy LTG Apollo
Module ↗
Domain Selection Matrix
Candidate lookalikes for PeopleFluent, OpenLMS, and Rustici Software, with buy, test, and skip guidance.
Domain buying Brand pools
Tool ↗
Volume Calculator
Interactive sizing for monthly outbound volume, sends per mailbox, domain count, and annual infrastructure cost.
Capacity model Budget
Checklist ↗
Setup Checklist
Step order for domain purchase, mailbox provisioning, DNS authentication, and Apollo connection.
DNS Mailboxes Apollo admin
Plan ↗
Mailbox Warm-Up Plan
The 8-week ramp from new mailbox to production send volume, with bounce and complaint thresholds.
Ramp Health checks
Plan ↗
Launch Timeline and Owners
End-to-end timing, critical path, and ownership map for RevOps, Marketing Ops, and Apollo admins.
Timeline Owners

Recommended Review Path

Move from decision to build sequence. Each step reduces the next decision the team needs to make.

01
Confirm brand pools
Split PeopleFluent, OpenLMS, and Rustici Software into separate sender pools.
02
Pick domains
Shortlist candidates, then run reputation and archive checks before buying.
03
Size capacity
Use monthly volume to calculate mailboxes, domains, and first-year cost.
04
Set up safely
Provision mailboxes, authenticate DNS, route replies, and connect to Apollo.
05
Warm up and monitor
Ramp send volume over 8 weeks and watch bounce, reply, and complaint rates.

Reference Links

Useful setup, authentication, and domain-health references for the LTG team as domains and mailboxes move from plan to launch.

Apollo ↗
Email Deliverability Guide
Apollo's broader guide to sender streams, authentication, lookalike domains, custom tracking domains, and complaint-rate guardrails.
Strategy Best practice
Apollo ↗
Link Your Mailbox to Apollo
Operational reference for connecting Google, Microsoft, or custom IMAP mailboxes before sequences are assigned to sender pools.
Mailbox setup Apollo admin
Apollo ↗
Use Email Warmup
Apollo steps for starting mailbox warmup, with notes for Google sign-in and Office 365 SMTP AUTH requirements.
Warm-up Mailbox health
Apollo ↗
Generate Domains and Mailboxes
Reference option if LTG wants Apollo to create sending domains and mailboxes instead of a fully manual procurement path.
Procurement Admin path
Google ↗
Google Sender Guidelines
Google's current requirements for SPF, DKIM, DMARC, spam-rate thresholds, and unsubscribe handling for senders.
Gmail Compliance
Google ↗
Postmaster Tools Dashboards
Gmail visibility into spam rate, domain reputation, authentication, delivery errors, and reputation recovery signals.
Monitoring Gmail reputation
Microsoft ↗
Microsoft 365 DKIM Setup
Microsoft's custom-domain DKIM setup reference for mailboxes hosted in Microsoft 365.
DKIM Microsoft 365
Microsoft ↗
Microsoft 365 DMARC Setup
Microsoft's guidance for publishing DMARC after SPF and DKIM are configured across custom domains and subdomains.
DMARC Alignment
Tool ↗
MXToolbox Domain Health
Domain-level DNS, MX, blacklist, mail server, and web server checks to run before and after domains go live.
DNS checks Blacklist scan
Tool ↗
Spamhaus Reputation Check
Pre-purchase and ongoing check for domain or IP listings that can harm sender reputation before a campaign starts.
Reputation Preflight

Share Copy

Short handoff notes for sending the hub internally or externally.

Internal note

LTG resource hub is ready. It groups the lookalike domain strategy, domain selection matrix, volume calculator, setup checklist, warm-up plan, launch timeline, and external setup references for PeopleFluent, OpenLMS, and Rustici Software.

Client note

Sharing the LTG Apollo resource hub here. Start with the full lookalike domain strategy, then use the calculator and setup checklist to size the first domain and mailbox pool before procurement. I also included Apollo, Google, Microsoft, MXToolbox, and Spamhaus references for setup and reputation checks.