Promotional Email: Definition, Deliverability, and Best Practices
Learn what promotional email is, how it differs from transactional email, and how to improve campaign performance and deliverability.
Oct 20, 202623 min read
Email Compliance
27 articles on email compliance.
Unsubscribe Link: Definition, Deliverability Impact, and Best Practices
Learn what an unsubscribe link is, why it protects email deliverability, how unsubscribe rate works, and how to build a reliable opt-out flow.
Oct 19, 202625 min read
Reducing Unsubscribe Rates: A Technical Guide for Email Senders
Reducing unsubscribe rates with better consent, relevance, frequency, one-click headers, authentication, and suppression logic for healthier email delivery.
Oct 19, 202620 min read
Managing Unsubscribes: A Technical Guide for Email Senders
Learn how to manage unsubscribes with compliant links, one-click headers, suppression lists, webhooks, and reliable email sending workflows.
Oct 18, 202625 min read
Create an Email List: A Developer’s Guide to Consent, APIs, and Deliverability
Create an email list with a durable data model, consent controls, imports, API workflows, suppression handling, and deliverability safeguards.
Oct 17, 202621 min read
Email Consent: A Technical Guide for Developers
Email consent helps developers send wanted mail, preserve deliverability, document opt-ins, honor revocations, and separate marketing from transactional email.
Oct 17, 202620 min read
GDPR for Email Sending: What It Means for Deliverability
GDPR for email sending explained: lawful bases, consent records, unsubscribe rights, vendors, and practical steps for stronger deliverability.
Sep 16, 202626 min read
Email Subscriber: Definition, Consent, and Deliverability
Learn what an email subscriber is, how subscribers affect deliverability and campaign results, and how to build a healthy permission-based list.
Sep 14, 202624 min read
Email Harvesting: What It Is and Why It Hurts Deliverability
Learn what email harvesting is, why scraped addresses damage deliverability, and how to build a consent-based email list that performs.
Sep 12, 202623 min read
Email Compliance: What It Means for Senders and Deliverability
Learn what email compliance means, which legal and mailbox-provider rules apply, how it affects deliverability, and how to build a compliant program.
Sep 11, 202622 min read
CCPA Email Marketing: What It Means for Senders
Learn how CCPA email marketing rules affect consent, tracking, suppression lists, privacy requests, and campaign deliverability for senders.
Sep 3, 202625 min read
CASL Explained: Canada’s Anti-Spam Law for Email Senders
Learn what CASL means for email senders, including consent, unsubscribe rules, recordkeeping, deliverability, and practical compliance steps.
Sep 3, 202625 min read
Affiliate Marketing in Email: Definition, Deliverability Risks, and Best Practices
Learn how affiliate marketing works in email, why it can hurt deliverability, which metrics matter, and how to run compliant, trusted campaigns.
Aug 30, 202623 min read
Advertising Email: Definition, Deliverability & Compliance
Advertising email promotes products, services, or offers. Learn to classify it, protect deliverability, meet key rules, and improve campaigns.
Aug 30, 202621 min read
Unsubscribe Rate: What It Means and How to Reduce It
Learn what unsubscribe rate means, how to calculate it, why it affects email performance, and practical ways to reduce campaign opt-outs.
Aug 29, 202624 min read
CAN-SPAM Act: What It Means for Email Senders
Learn what the CAN-SPAM Act requires of commercial email senders, how it affects deliverability, and how to build compliant campaigns.
Aug 26, 202623 min read
Email List: Definition, Hygiene, and Deliverability Best Practices
Learn what an email list is, how it affects deliverability and campaigns, and how to build, clean, segment, and maintain a healthy list.
Aug 25, 202623 min read
Email Footer: What It Is and Why It Matters for Deliverability
Learn what an email footer is, what it must include, and how clear unsubscribe and identity details protect deliverability and campaign results.
Aug 25, 202622 min read
Managing Your Own Unsubscribe Process: A Developer Guide
Learn how to manage your own unsubscribe process with signed links, suppression data, one-click headers, testing, and compliance safeguards.
Aug 16, 202620 min read
How to Include a List-Unsubscribe Header (RFC 8058)
Learn how to add a List-Unsubscribe header and RFC 8058 one-click POST endpoint, test it, and avoid delivery and compliance mistakes.
Aug 16, 202618 min read
How to Add an Unsubscribe Link to Email (Code + Headers)
Learn how to add an unsubscribe link to email with a compliant footer, List-Unsubscribe headers, one-click POST endpoint, testing steps, and safeguards.
Aug 16, 202623 min read
What Counts as Email Consent? A Developer’s Practical Guide
Learn what counts as email consent, when transactional messages are allowed, how to record proof, honor opt-outs, and protect deliverability.
Aug 12, 202624 min read
Should You Add an Unsubscribe Link? A Developer’s Guide to Email Types, Compliance, and Deliverability
Should you add an unsubscribe link? Learn which emails need one, how to implement one-click headers, protect deliverability, and honor opt-outs.
Aug 12, 202619 min read
Transactional Email Policy: How to Define, Implement, and Enforce It
Create a transactional email policy that separates product messages from marketing, protects deliverability, and gives teams clear sending rules.
Aug 8, 202624 min read
Transactional Emails vs Marketing Emails: The Practical Difference
Learn transactional emails vs marketing emails, including compliance, deliverability, consent, examples, setup, and a practical sending workflow.
Jul 27, 202623 min read
Transactional Email vs Marketing Email: The Practical Guide to Sending Both Correctly
Learn the transactional email vs marketing email difference, compliance rules, sending setup, examples, and how to protect deliverability.
Jul 26, 202621 min read
When Recruitment Emails Suddenly Hit Gmail Spam: Why “Mark as Not Spam” Isn’t the Fix
Are recruitment emails going to Gmail spam? Learn why “Not spam” is only a signal, and how authentication, relevance, targeting, and easy opt-outs support recov
Jul 24, 2026