Email API•2 min read

Implementing an Email Verification API for Higher Deliverability

Integrating an email verification API is essential for developers aiming to boost transactional email deliverability. By performing developer email validation, you can prevent email bounces and ensure your messages reach their intended recipients, complementing your email API integration for optimal performance.

Implementing an Email Verification API for Higher Deliverability

Section 1

Why Email Verification is Crucial for Deliverability

In the world of transactional emails, reaching the inbox is paramount. An email verification API plays a critical role in ensuring your messages land where they should. By validating email addresses before sending, you significantly improve your transactional email deliverability and protect your sender reputation from being tarnished by high bounce rates.

Section 2

Integrating a Third-Party Email Verification Service

Before sending any email, it's best practice to perform developer email validation using a dedicated service. These services check for syntax errors, domain validity, and even temporary mailbox issues, helping you prevent email bounces. While Piisend focuses on robust sending, integrating with a verification API beforehand ensures you're only sending to valid addresses.

bash
1curl -X POST "https://api.emailverify.com/v1/verify" \
2 -H "Authorization: Bearer YOUR_VERIFICATION_API_KEY" \
3 -H "Content-Type: application/json" \
4 -d '{
5 "email": "test@example.com"
6 }'

Section 3

Sending Verified Emails with Piisend's API

Once you've confirmed an email address is valid through developer email validation, you can confidently use Piisend's powerful email API integration to send your messages. This two-step process ensures high transactional email deliverability and minimizes wasted sends. Here's how to send a simple email using Piisend after verification.

bash
1curl -X POST https://api.piisend.com/api/v1/emails \
2 -H "Authorization: Bearer YOUR_API_KEY" \
3 -H "Content-Type: application/json" \
4 -d '{
5 "to": ["verified-user@example.com"],
6 "subject": "Your Account Verification",
7 "html": "<h1>Welcome!</h1><p>Your account has been successfully verified.</p>",
8 "text": "Welcome! Your account has been successfully verified."
9 }'

Section 4

Enhancing Deliverability with Templates and Idempotency

For critical transactional email sends like OTPs or password resets, using templates combined with an email verification API further streamlines your workflow. Piisend's API supports templates and idempotent email sends to prevent duplicate messages, ensuring a smooth user experience and robust email deliverability. Always send to pre-validated addresses.

python
1import requests
2
3api_key = "YOUR_API_KEY"
4url = "https://api.piisend.com/api/v1/emails"
5headers = {
6 "Authorization": f"Bearer {api_key}",
7 "Content-Type": "application/json",
8 "Idempotency-Key": "unique-send-id-12345"
9}
10payload = {
11 "to": ["verified-recipient@example.com"],
12 "template_id": "tpl_01H8XQ7Y8Z9A0B1C2D3E4F5G6H",
13 "template_vars": {
14 "name": "John Doe",
15 "otp_code": "123456"
16 }
17}
18
19response = requests.post(url, headers=headers, json=payload)
20print(response.status_code)
21print(response.json())

Start sending

Ship transactional email in minutes

Create an API key, verify a domain, and send your first message with Piisend.