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Email Deliverability

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...

• BY phoconadmin
• November 11, 2026
• 0 Comments

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...

• BY phoconadmin
• November 4, 2026
• 0 Comments

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...

• BY phoconadmin
• November 2, 2026
• 0 Comments

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...

• BY phoconadmin
• October 30, 2026
• 0 Comments

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...

• BY phoconadmin
• October 29, 2026
• 0 Comments

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...

• BY phoconadmin
• October 28, 2026
• 0 Comments

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...

• BY phoconadmin
• October 27, 2026
• 0 Comments

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....

• BY phoconadmin
• October 23, 2026
• 0 Comments

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...

• BY phoconadmin
• October 22, 2026
• 0 Comments

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....

• BY phoconadmin
• October 21, 2026
• 0 Comments