FireGlue Blog

Expert insights on cold email infrastructure, deliverability, and email marketing strategies. Learn how to scale your outreach while maintaining pristine sender reputation.


Email Authentication: The Complete SPF, DKIM, DMARC Setup Guide

Email Authentication: The Complete SPF, DKIM, DMARC Setup Guide

A comprehensive technical guide to setting up and managing email authentication records for optimal deliverability.

October 8, 2025

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DNS Records for Email: SPF, DKIM, and DMARC Explained

DNS Records for Email: SPF, DKIM, and DMARC Explained

A comprehensive guide to email authentication DNS records. Learn how to properly configure SPF, DKIM, and DMARC for maximum deliverability.

October 7, 2025

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Mailbox Warm-up Guide: The Science Behind Email Reputation

Mailbox Warm-up Guide: The Science Behind Email Reputation

Master the art of mailbox warm-up. Learn the day-by-day process to build sender reputation and achieve maximum deliverability for cold email.

October 6, 2025

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Cold Email Copywriting: Templates That Actually Get Replies

Cold Email Copywriting: Templates That Actually Get Replies

Master cold email copywriting with proven templates, frameworks, and strategies that generate real responses and book meetings.

October 5, 2025

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Email Infrastructure Best Practices for Cold Outreach in 2025

Email Infrastructure Best Practices for Cold Outreach in 2025

Learn the essential best practices for building scalable email infrastructure that ensures high deliverability and inbox placement.

October 4, 2025

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Why Your Emails Go to Spam (And How to Fix It)

Why Your Emails Go to Spam (And How to Fix It)

Discover the top reasons emails land in spam and get actionable solutions to fix deliverability issues and reach the inbox.

October 3, 2025

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CAN-SPAM Compliance: The Complete Guide for Cold Email

CAN-SPAM Compliance: The Complete Guide for Cold Email

Everything you need to know about CAN-SPAM Act compliance for cold email. Avoid fines and build trust with proper email practices.

October 2, 2025

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Cold Email for SaaS: Complete Playbook for 2025

Cold Email for SaaS: Complete Playbook for 2025

Master cold email for SaaS companies. Learn proven strategies to book demos, reduce CAC, and scale customer acquisition through cold outreach.

October 1, 2025

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The Complete Guide to Cold Email Deliverability

The Complete Guide to Cold Email Deliverability

Master the art and science of getting your cold emails into the inbox. Learn proven strategies for maximum deliverability in 2025.

September 27, 2025

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Scaling Cold Email: From 10 to 10,000 Emails Per Day

Scaling Cold Email: From 10 to 10,000 Emails Per Day

A practical guide to scaling your cold email operations from small experiments to enterprise-level outreach campaigns.

September 14, 2025

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Microsoft 365 vs Google Workspace vs Zoho: Which Email Provider for Cold Outreach?

Microsoft 365 vs Google Workspace vs Zoho: Which Email Provider for Cold Outreach?

A comprehensive comparison of email providers for cold outreach. Learn which provider delivers the best results for your use case.

August 31, 2025

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