Migrating from Amazon SES: What Changes and What to Watch
Leaving SendGrid means getting your content out. Leaving SES is a different problem entirely, because SES holds almost nothing of...
Email Deliverability
Email Engineering Guide
Migrating Away from SendGrid: A Step-by-Step Playbook
The part everyone worries about takes about ten minutes. You change four environment variables and deploy, and your application is...
Email Engineering Guide
How to Migrate Transactional Email Providers Without Downtime
Migrations that go wrong rarely fail at the cutover. They fail three days earlier, when somebody edited an SPF record...
Email Deliverability
Mailchimp Transactional (Mandrill) Pricing and Alternatives
Mailchimp’s transactional costs $20 for a block of 25,000 emails. That is 80 cents per thousand, which looks competitive against...
Email Deliverability
Postmark Pricing and Volume Economics
Open Postmark’s pricing page and you see three columns — Basic, Pro, Platform — at $15, $16.50 and $18. Every...
Email Tools Comparison
Brevo Free Plan Limits and Transactional Email Constraints
Brevo’s free plan is genuinely free forever. No trial period, no credit card, no expiry date — which makes it...
SMTP Infrastructure
Zoho Mail SMTP Limits for Transactional Sending
Search for Zoho Mail’s daily sending limit and you will not find one, because there isn’t a daily limit. The...
SMTP Infrastructure
Mailgun Pricing Explained: Overages, Add-Ons and True Cost
Your plan is $35 a month for 50,000 emails. Last month you sent 60,000, and the invoice came to $48....
SMPT Relay Service
Gmail and Google Workspace SMTP Sending Limits for Applications
Your application sends from noreply@yourcompany.com. So when sending stops, the puzzling part is which account Google says has hit its...
Email Deliverability
Amazon SES Sending Limits and Quota Increases Explained
Amazon SES is the cheapest way to send email at volume, and the sandbox is the part everyone worries about....