Email Infrastructure
SMTP Relay vs Direct Sending: Which Is Better for Cold Email?
SMTP relay services offer optimized deliverability and ease of use. Direct sending provides granular control for technical teams.
DNS Records for Email: The Complete Guide to MX, SPF, DKIM, and DMARC
Master email delivery. Configure MX, SPF, DKIM, and DMARC DNS records to ensure your messages reach inboxes, not spam folders.
Email Authentication Explained Simply: SPF, DKIM, DMARC, and BIMI
Verify email senders and message integrity with SPF, DKIM, DMARC, and BIMI. Improve deliverability and protect against spoofing.
How to Set Up Multiple Domains for Cold Email Without Getting Banned
Protect your brand and boost deliverability. Acquire secondary domains, configure DNS, and warm them for high-volume cold email.
Best SMTP Server for Cold Email in 2026: Compared and Ranked
Find the top SMTP servers for cold email in 2026. We compare MailStack and Postigo to boost your deliverability.
Cold Email Infrastructure Setup: Complete Guide for 2026
Master cold email infrastructure for 2026. Set up domains, DNS, SMTP, and warm-up for peak deliverability.
Boost Cold Outreach: Send Emails from Google Workspace
Master Google Workspace for cold outreach. Configure SMTP, understand limits, and set up authentication for high deliverability.
Best Free SMTP Servers for Email Sending
Discover the top free SMTP servers to power your email marketing and cold outreach campaigns on Postigo. Improve deliverability, save costs, and scale your efforts with these reliable, no-cost solutions for sending high volumes of emails effectively.
How to Set Up SMTP Rotation for Bulk Email
Learn how to implement SMTP rotation to improve deliverability for your bulk email campaigns. This guide provides a step-by-step setup, ensuring your cold outreach efforts on Postigo remain effective and compliant. Optimize your email sending strategy for better inbox placement.
SMTP Error Codes: Complete Reference Guide
Decode common SMTP error codes with this complete reference guide tailored for email marketers and cold outreach specialists. Learn to troubleshoot deliverability issues on the Postigo platform and optimize your campaigns for maximum success.
How to Use Amazon SES for Email Marketing
Discover how to effectively use Amazon SES for your email marketing and cold outreach campaigns directly within the Postigo platform. This guide provides essential steps for setup, configuration, and best practices to ensure high deliverability and maximize your campaign success.
Outlook SMTP Settings: Complete Configuration Guide
Master your Outlook SMTP settings for seamless email marketing and cold outreach with Postigo. This comprehensive guide walks you through every step, ensuring reliable delivery and professional communication from your desktop client. Optimize your setup for maximum impact and reach.