How to Work Around LinkedIn's 3 Custom-Note Invites Per Month Cap Inside Lemlist Sequences
LinkedIn caps custom-note invites at 3/sender/month. Default the Invite step to no-note and reserve personalized notes for a 3-contact VIP branch.
Topic
Outbound Sales
A collection of 27 issues
How to Recover Apollo Sequences Stuck in ERROR Status After a Mailbox Disconnect
When an Apollo mailbox disconnects, contacts flip to ERROR and stay there. Reconnect doesn't auto-resume - here's the recovery pattern.
How to Fix Outlook 550 5.7.15 After Microsoft's May 2025 DMARC Rule
Microsoft began rejecting non-DMARC bulk mail to Outlook.com, Hotmail.com, and Live.com on May 5, 2025 with the 550 5.7.15 error. Here's the runbook to clear the gate.
How to Tune Instantly's 1.8% Bounce Protection Without Choking Campaigns
Instantly's Bounce Protection auto-pauses one inbox at a time when the rate crosses 1.8%. Here's how to tune the threshold without throttling clean inboxes or letting reputation rot.
How to Manage CAN-SPAM Opt-Outs Across Multiple Cold-Email Sending Domains
Running 10+ sending domains? CAN-SPAM's 10-business-day rule applies to the sender, not each domain. A practitioner walkthrough of suppression-list architecture.
How Salesloft Rhythm Reprioritizes Your Day (and What to Configure First)
Salesloft Rhythm only ranks the signals you have already piped in. A practitioner walkthrough of signal sources, weighting, and cadence restructure before launch.
How to Set Up Cold Email Infrastructure Without Burning Your Domains
The post most teams need to read before worrying about open rates is this one. Gmail and Yahoo began permanently rejecting non-DMARC bulk mail in November 2025, and Microsoft followed with its own bulk-sender enforcement in May 2026. Domain setup errors that used to land you in spam folders now
Gmail and Yahoo Now Permanently Reject Non-DMARC Bulk Mail (Nov 2025): What Cold Email Operators Have to Change
In November 2025, Gmail flipped bulk-sender enforcement from 4xx temporary deferrals to 5xx permanent rejection. What the new SMTP error codes mean, why p=none is no longer survivable, and the sharp counter-take on what authentication actually catches.
How to Stay Under Gmail's 0.3% Spam Complaint Ceiling on Apollo Sequences After Bulk-Sender Enforcement
Gmail's 0.3% spam-complaint ceiling moved from soft throttle to permanent reject in Nov 2025. Apollo doesn't enforce the operational guardrails - here are the four thresholds to set manually, the daily Postmaster check, and the one upstream fix that matters more than any in-sequence knob.
How to Find Companies Hiring a Fractional CMO, CFO, or CRO
LinkedIn went from 60K fractional execs in 2022 to 120K by 2024. Almost nobody covers it as a buying signal. A fractional CMO, CFO, or CRO has six-to-twelve months to ship visible delta - which means they're buying tools on a deadline. Per Jason Lemkin, half the titles are advisor cosplay.