How to Fix Gmail's 550 5.7.26 DMARC Bounce on Cold-Email Subdomains

Gmail bounces cold email from sending subdomains with 550 5.7.26 when SPF or DKIM authenticates but does not align with the From header. Here is the DNS fix.

How to Add RFC 8058 One-Click Unsubscribe in Smartlead and Instantly

Google and Yahoo's bulk-sender rules want a List-Unsubscribe-Post header, not just a footer link. Here is where Smartlead and Instantly set it and how to confirm it shipped.

What Apollo's Pocus Acquisition Means for Signal Buyers

Apollo bought signal-intelligence platform Pocus on 2026-03-19, bolting account prioritization onto its execution stack. What it changes for teams buying standalone signal tools.

Why Your Agentforce SDR Agent Stops Replying to Leads

Agentforce drafts the outreach but goes silent on replies. The cause is Einstein Activity Capture's internal-domain block, Header-only Email Capture, and Send-as-Seller - here are the fixes.

Honor Apollo CCPA Opt-Outs Without Re-Importing Deleted Contacts

Apollo routes a CCPA opt-out to a suppression list - but that only governs Apollo's database. Here's how to stop deleted contacts re-importing from your own stale exports into the CRM.

Fix Clay Claygent 429 Errors From Your Own OpenAI or Anthropic Key

Bring-your-own-key Claygent runs that 429 are not a credit problem. They are a provider-tier problem with a hard tokens-per-minute floor.

How to Outbound ZoomInfo EMEA Data Under GDPR Article 14

ZoomInfo gives the Article 14 notice for its own processing. The moment you outbound an EEA contact you become a separate controller - here is the legal basis, notice, balancing test, and opt-out you owe.

Why Agentforce Lead Nurturing Emails Stop Sending: A Checklist

Agentforce Lead Nurturing agents fail quietly to the Activity Timeline. Here is how to read the error string and map bounces, opt-outs, the daily caps, and EAC access to the right fix.

How to Fix Clay's 'Found 0 Objects' and hs_object_id Errors

Two named Clay-to-HubSpot write failures - the 'Found 0 objects' source error and duplicate-creating updates - traced to hs_object_id, with the Lookup-first fix.

How to Work Around HubSpot's 250-Filter Segment Limit Without Breaking Reporting

HubSpot caps active segments at 250 filters and 60 associated-object lines. Decompose into parent + child segments to double the cap without breaking joins.