Blog de Mailer To Go
Guías, tutoriales e información sobre correo electrónico transaccional, capacidad de entrega y infraestructura de correo electrónico.
How to Send Transactional Email From Heroku (With Mailer To Go)
Send inbox-landing transactional email from a Heroku app: provision the Mailer To Go add-on, verify your sending subdomain, configure Rails or Node, and handle the Heroku-specific gotchas (config vars, review apps, background jobs, port 25).
How to Migrate From Mailgun to Mailer To Go
A step-by-step guide to migrating transactional email from Mailgun to Mailer To Go: sending-domain setup, SPF/DKIM/DMARC, swapping SMTP/API credentials, importing bounces/unsubscribes/complaints, and a safe parallel-run cutover with rollback.
How to Migrate From SendGrid to Mailer To Go
A step-by-step guide to migrating transactional email from SendGrid to Mailer To Go: sending-domain setup, SPF/DKIM/DMARC, swapping SMTP/API credentials, importing your suppression list, and a safe parallel-run cutover with rollback.
Email Authentication, End to End: SPF, DKIM & DMARC With Real Config
The hands-on guide to email authentication: real, copy-paste SPF, DKIM, and DMARC records, how to verify them with dig and Gmail's Show original, and how to roll out a DMARC policy from p=none to p=reject without breaking your mail.
Vultr Blocks SMTP Port 25 — They Even Told Us No. Here's How to Send Email Anyway
Vultr blocks outbound port 25 and won't remove the block — even for an email infrastructure company sending authenticated, transactional-only mail from its own IP space. Here are their denial emails verbatim, why the policy makes sense, and how Mailer To Go lets any Vultr customer send email in minutes.
How to Migrate From Postmark to Mailer To Go
A step-by-step guide to migrating transactional email from Postmark to Mailer To Go: sending-domain setup, SPF/DKIM/DMARC, swapping SMTP/API-token credentials, exporting your suppression streams, and a safe parallel-run cutover with rollback.
Why Amazon SES Is the Most Expensive “Cheap” Email Provider
Amazon SES has the lowest sticker price in email at $0.10/1,000 — but that only buys raw sending. Once you rebuild the dashboard, event pipeline, and anti-abuse tooling SES omits (SNS -> SQS -> Lambda -> CloudWatch, plus engineering), the fully-loaded cost climbs to ~$4-6/1,000. A methodical breakdown of SES's promise vs. the DIY reality.