Infrastructure
What Is a Bounce Message and How to Decode It
A bounce is the mail system telling you why a message failed. Learn to read the codes, tell hard from soft bounces, and act on each one correctly.
5 min read
July 18, 2026Blog
Email marketing insights
Best practices, tutorials, tips and tricks to maximize your email marketing results.
101 articles
Page 1 of 12
Comparisons
Mailgun Pricing Explained - What You Actually Pay at Each Volume
Mailgun's tiers look simple until you hit overages and dedicated IP fees. What each volume level really costs in 2026 and where the traps are.
5 min read
July 18, 2026
Comparisons
MailerSend vs Dedicated SMTP Server Compared
MailerSend is a developer-friendly transactional relay with a generous free tier, but it bills per email. Here's how a flat-rate dedicated SMTP server compares on cost and control.
8 min read
July 18, 2026
Troubleshooting
451 4.7.1 Greylisting - What It Is and How Senders Should Handle It
Greylisting rejects every first delivery attempt on purpose, betting that spammers won't retry. Real MTAs pass automatically, unless your setup breaks the rules.
4 min read
July 17, 2026
Deliverability
What Is BIMI and Do You Actually Need It?
BIMI puts your logo in the inbox, but only after DMARC enforcement and usually a paid verified certificate. Here is who needs it and who can skip it.
5 min read
July 16, 2026
Comparisons
SMTP Relay Pricing Comparison 2026 - Cost per 1K/10K/100K/1M Emails
One table, eight providers, four volume tiers. What SMTP relay actually costs in 2026 at 1K, 10K, 100K, and 1M emails per month, and where flat-fee servers take over.
5 min read
July 16, 2026
Comparisons
Mautic SMTP Configuration - Send Campaigns Through Your Own Server
Mautic's marketing automation is free; the sending is yours to provide. The SMTP transport, queue, and bounce configuration that makes it run on your own server.
4 min read
July 16, 2026
Infrastructure
How to Send 10,000 Emails a Day, Infrastructure, Warm-Up, and Costs
Sending 10,000 emails a day reliably takes one or two warmed dedicated IPs, proper DNS authentication, and a realistic ramp-up schedule. Here is the exact setup and what it costs.
5 min read
July 15, 2026
Comparisons
Brevo (Sendinblue) Alternatives Compared
Brevo is solid value, but its per-send tiers and add-on IPs limit high-volume senders. Here are the strongest alternatives, with a comparison table.
8 min read
July 15, 2026