Install
Search email products, services, and guides
Focused results for email topics
4Email is a search engine built specifically for Email. Whether you are setting up a mail server, choosing an ESP, troubleshooting deliverability, or researching email best practices, 4Email combines multiple indexes, specialized algorithms, and AI assistance to surface the most relevant email content quickly. Explore curated categories, focused search results, and tools created by email experts. Part of the 4SEARCH network of topic specific search engines.
Latest Articles
Compliance Event Dispatch: Auditable Email and SMS API Backoff Without Duplicate Sends
18+ hour, 42+ min ago (661+ words) Short answer: put compliance notices on a queue, assign one stable idempotency key per notice and channel, and record every attempt before any email or SMS API call. For a B2B SaaS compliance notice, choose the middle row. It adds one…...
Playwright email verification can pass for the wrong reason: six checks for a trustworthy test
19+ hour, 24+ min ago (575+ words) We deliberately made an email-verification test finish on the wrong account. The page said Email verified. Playwright passed. Then we added an assertion for which account had been verified. The same scenario failed. This was a controlled browser experiment with…...
I built an email scorer in one HTML file with zero dependencies. Here is every threshold and where it came from.
22+ hour, 13+ min ago (808+ words) I write about B2B sales for a living, which means I read a lot of cold emails and a lot of advice about cold emails. The advice is almost always unfalsifiable. "Keep it short." How short? "Be personal." Measured how? So…...
How to fix iMessage "Not Delivered" error on iPhones
22+ hour, 17+ min ago (239+ words) Your iPhone should send messages normally most of the time, but you can try easy fixes when it acts up. Sending messages to friends and family on an iPhone is usually pretty easy: open a chat in the Messages app,…...
Testing email verification flows in Playwright without a mail server
1+ day, 7+ hour ago (682+ words) Most signup tests die at the same line. The form submits, the app renders "check your email", and the test has nowhere to go. You can assert the confirmation screen appeared, but everything after it — the code entry, the activated…...
Scaling transactional email: which provider fits at each growth stage (0 -> 100K+ emails/month)
1+ day, 9+ hour ago (1794+ words) Picking a transactional email provider feels like a five-minute decision — add an API key, send your first signup confirmation, move on. It stays a five-minute decision until you scale, at which point the plan you casually picked can turn into…...
No Cookies | The Courier Mail
1+ day, 18+ hour ago (101+ words) Weather report for Emerald couriermail.com.au To enable cookies, follow the instructions for your browser below. Facebook App: Open links in External Browser There is a specific issue with the Facebook in-app browser intermittently making requests to websites without…...
Send Transactional Email from a Verified Domain with an API or SMTP
1+ day, 11+ hour ago (245+ words) Password resets, login codes, receipts, and alerts are easier to operate when application email has its own delivery path. Here are the setup decisions that matter before sending. Use a domain you control, then add the DNS records shown by…...
Mailchimp Integration - Lyro AI Agent
1+ day, 17+ hour ago (861+ words) SOC 2 Type II · GDPR · CCPA Every action runs live through MCP. Nothing to build, nothing to maintain. Lyro schedules a Mailchimp campaign to go out at a specific date and time. Marketing can line up a send during a conversation…...
Custom Domain Onboarding: Show DNS Records, Copy or Write Them for Customers
2+ day, 4+ hour ago (674+ words) Short answer: show the exact SPF, DKIM, and DMARC records first, then let a customer explicitly authorize a write; this keeps onboarding honest when the DNS zone is customer-owned and prevents your intent from drifting away from what the internet…...