Email Infrastructure
Gmail Sending Limits: Complete Guide
Understand Gmail's sending limits to optimize your email marketing and cold outreach campaigns on Postigo. Learn how to avoid blocks, ensure deliverability, and scale your outreach effectively without hitting Google's restrictions. This guide provides a complete breakdown.
Mar 03, 2026
12 min read
What Is SMTP and How Does It Work?
SMTP is the backbone of email delivery, crucial for successful email marketing and cold outreach. This guide demystifies Simple Mail Transfer Protocol, explaining how it works and its importance for reliable email sending on platforms like Postigo.
Mar 03, 2026
12 min read